1290 ASSOCIATES,

                                    Landlord

                                       TO

                          THE EQUITABLE LIFE ASSURANCE

                          SOCIETY OF THE UNITED STATES,

                                     Tenant

                                      Lease

                            Dated as of July 20, 1995





                               TABLE OF CONTENTS
ARTICLE 1
         Premises; Term; Use   
1.01     Demise.   
1.02     Term.     
1.03     Relevant Date.     
1.04     Tenant Delay.       
1.05     Use.                
1.06     Tenant's Right of First Offer.       

ARTICLE 2
         Rent                
2.01     Rent.               
2.02     Fixed Rent.         
2.03     Additional Charges.          
2.04     Tax Payments.       
2.05     Operating Payments.          
2.06     Tax and Operating Provisions.        
2.07     Electric Charges.   
2.08     Manner of Payment.           

ARTICLE 3
         Landlord Covenants          
3.01     Office Space Services        
3.02     Concourse Space Services     
3.03     Other Building Services      
3.04     General Provisions           

ARTICLE 4
         Leasehold Improvements; Tenant Covenants      
4.01     Initial Improvements.        
4.02     Alterations.        
4.03     Landlord's and Tenant's Property.    
4.04     Access and Changes to Building.      
4.05     Repairs.   
4.06     Compliance with Laws.        
4.07     Tenant Advertising.          
4.08     Right to Perform Tenant Covenants.   

ARTICLE 5
         Assignment and Subletting   
5.01     Assignment; Etc.    
5.02     Landlord's Right of First Offer.     
5.03     Assignment and Subletting Procedures.         
5.04     General Provisions.          
5.05     Assignment and Sublease Profits.     

ARTICLE 6
         Subordination; Default; Indemnity    
6.01     Subordination.      
6.02     Estoppel Certificate.        
6.03     Default.   
6.04     Re-entry by Landlord.        
6.05     Damages.   
6.06     Other Remedies.     
6.07     Right to Injunction.         
6.08     Certain Waivers.    
6.09     No Waiver.          
6.10     Holding Over.       
6.11     Attorneys' Fees.    
6.12     Nonliability and Indemnification.    

ARTICLE 7
         Insurance; Casualty; Condemnation    
7.01     Compliance with Insurance Standards.          
7.02     Tenant's Insurance.          
7.03     Subrogation Waiver.          
7.04     Condemnation.       
7.05     Casualty.           
7.06     Certain Termination Payments.        
7.07     Termination Rights As To Sublet Space.         





ARTICLE 8
         Miscellaneous Provisions    
8.01     Notice.    
8.02     Building Rules.     
8.03     Severability.       
8.04     Certain Definitions.         
8.05     Quiet Enjoyment.    
8.06     Limitation of Landlord's Personal Liability.           
8.07     Counterclaims.      
8.08     Survival.           
8.09     Arbitration.        
8.10     No Offer.           
8.11     Captions; Construction.      
8.12     Amendments.         
8.13     Broker.    
8.14     Merger.     
8.15     Successors.          
8.16     Applicable Law.      
8.17     No Development Rights.        
8.18     Parking.    
8.19     Emergency Generator.          
8.20     Signage.    
8.21     Lobby Renovation.    
8.22     Force Majeure.       
8.23     Memorandum of Lease.          
8.24     Major Tenant Rights.          
8.25     Lobby Artwork.       

ARTICLE 9
         Renewal Right        
9.01     Renewal Right.       
9.02     Renewal Rent and Other Terms.         

ARTICLE 10
        Self-Help; Rent Abatement; Set-Off    
10.01    Tenant's Right To Perform Landlord's Obligations.       
10.02    Tenant Abatement Rights.      
10.03    Tenant Termination Rights.    
10.04    Tenant's Right to Interest on Late Payments.            
10.05    Tenant's Set-Off Right.       
10.06    Effect of Rejection by Landlord.      

ARTICLE 11
         Tenant Antenna       
11.01    Tenant Antenna.      

ARTICLE 12
         Corporate Retention Benefits          
12.01    Incentive Benefits.           





                                    EXHIBITS

A        Description of Land
B        Floor Plans
B-1      14th Floor
B-2      15th Floor
B-3      16th Floor
B-4      17th Floor
B-5      18th Floor
B-6      19th Floor
B-7      20th Floor
B-8      21st Floor
B-9      22nd Floor
B-10     12th Floor
B-11     13th Floor
B-12     11th Floor
B-13     Concourse Space
B-14     Sub-Cellar Space
B-15     Initial Possession Space
C        Rules and Regulations
D        Alterations Rules and Regulations
E        Standard Cleaning Specifications
F        Landlord's Work
G        HVAC Specifications
H        RSF and Tenant's Share
I        Form of Landlord's Statement
J        Electrical Specifications
K        Form of Assumption Agreement
L        Building Security Specifications
M        Non-Disturbance and Attornment Agreement between Tenant and the
         Indenture Trustee
N        [Intentionally Omitted]
O        Form of Non-Disturbance and Attornment Agreement for Superior Mortgages
P        Condenser Water Specifications
Q        Tenant's Required Work
R        Elevator Specifications
S        Locations for NYNEX Second Port of Entry
T        Antenna Location
U        Location of Benton Panels
V        Exterior Signage Locations and Criteria
W        Lobby Renovation Work
X        HVAC Overtime Charge Formula
Y        [Intentionally Omitted]
Z        19th Floor Radiator Covers and Grilles and Mullions
AA       Exhibits Omitted from filing




                             INDEX OF DEFINED TERMS

Definition                                                       Where Defined

90 Day Offer Space Interval                                        Section  1.06
AAA                                                                Section  2.07
Acceptance Notice                                                  Section  1.06
Actual Charge                                                      Section  2.07
ADA                                                                Exhibit  F
Additional  Charges                                                Section  2.03
Adjusted  Block A Fixed  Relevant Date                             Section  1.03
Adjusted  Block B Fixed  Relevant Date                             Section  1.03
Adjusted  Block C Fixed  Relevant Date                             Section  1.03
Adjusted  Concourse  Fixed Relevant Date                           Section  1.03
Adjusted  Fixed Relevant Date                                      Section  1.03
Affiliate                                                          Section  5.01
Agency                                                             Section 12.01
Allowance                                                          Section  4.01
Alterations                                                        Section  4.02
Antenna                                                            Section 11.01
Applicable  Allowance                                              Section  1.03
Available                                                          Section  1.06
Base  Cleaning Cost                                                Section  3.04
Base Operating Amount                                              Section  2.05
Base Operating Year                                                Section  2.05
Base Tax Amount                                                    Section  2.04
Base Tax Year                                                      Section  2.04
Benton                                                             Section  8.25
Block A and B Allowance                                            Section  4.01
Block A Relevant Date                                              Section  1.03
Block A Fixed  Relevant  Date                                      Section  1.03
Block A Rent  Commencement  Date                                   Section  2.02
Block A Space                                                      Section  1.01
Block B Relevant  Date                                             Section  1.03
Block B Fixed Relevant Date                                        Section  1.03
Block B Rent  Commencement  Date                                   Section  2.02
Block B Space                                                      Section  1.01
Block C Allowance                                                  Section  4.01
Block C Relevant Date                                              Section  1.03
Block C Fixed  Relevant  Date                                      Section  1.03
Block C Rent  Commencement  Date                                   Section  2.02
Block C Space                                                      Section  1.01
Blocks                                                             Section  1.01
Brokerage  Agreement                                               Section  8.13
Brokers                                                            Section  8.13
Building  Recitals  Business Days                                  Section  3.04
Business  Hours                                                    Section  3.04
Cafeteria                                                          Section  1.05
Casualty                                                           Section  7.05
Casualty  Terminated Space                                         Section  7.05
Commission                                                         Section  8.13
Commission Rent Credit                                             Section  8.13
Companies                                                          Section  6.01
Competitor                                                         Section  5.02
Concourse Relevant  Date                                           Section  1.03
Concourse  Rent  Commencement  Date                                Section  2.02
Concourse Space                                                    Section  1.01





Concourse Space Work                                               Section  1.03
Contractor                                                         Section  7.05
Control                                                            Section  5.01
Curing Party                                                       Section  4.08
Deemed Termination Allowance                                       Section  7.05
Delivery Condition                                                 Section  1.03
Delivered Partial Floor                                            Section  1.03
Dependent Group                                                    Section  1.03
Direct Cleaning Notice                                             Section  3.04
ELAS                                                               Section  8.20
EREIM                                                              Section  5.01
Essential Group                                                    Section  1.03
Estimate                                                           Section  7.05
Eviction                                                           Section 10.02
Excess Cleaners                                                    Section  3.04
Execution and Delivery Date                                        Section  4.01
Expiration Date                                                    Section  1.02
Fair Market Rent                                                   Section  9.02
First Outside Date                                                 Section  7.05
First Rescission Date                                              Section  1.06
Fixed Cleaning Rent                                                Section  3.04
Fixed Relevant Date                                                Section  1.03
Fixed Rent                                                         Section  2.02
Fixtures                                                           Section  4.03
Force Majeure                                                      Section  8.22
GAAP                                                               Section  2.05
Ground Lease                                                       Section  6.01
Holdover Excess                                                    Section  1.03
Holdover Percentage                                                Section  6.10
Holdover Profit                                                    Section  1.06
Holdover Renewal Term                                              Section  6.10
Identified Ancillary Uses                                          Section  1.05
Improper Use                                                       Section  1.05
Includable Capital Improvements                                    Section  2.05
Indenture                                                          Section  6.01
Initial Charge                                                     Section  2.07
Initially Named Tenant                                             Section  5.04
Initial Possession Space                                           Section  4.01
Interest Rate                                                      Section  4.08
Interruption                                                       Section 10.01
Land                                                               Recitals
Landlord                                                           Introduction;
                                                                   Section  8.04
Landlord Delay                                                     Section  2.02
Landlord Indemnified Party                                         Section  6.12
Landlord Obligation Areas                                          Section  4.05
Landlord Services                                                  Section  3.01
Landlord's Acceptance Notice                                       Section  5.02
Landlord's Determination                                           Section  9.02
Landlord's New Lease                                               Section  6.10
Landlord's Rate                                                    Section  2.07
Landlord's Statement                                               Section  2.05
Landlord's Work                                                    Section  4.01
Late Delivery Terminated Space                                     Section  1.03
Laws                                                               Section  4.06
Lease             Introduction
Lobby Abatement Period                                             Section  8.21
Lobby Renovation Work                                              Section  8.21





Long Lead Work                                                     Section  7.05
Major Tenant Rights                                                Section  8.24
Material Alteration                                                Section  4.02
New Tenant                                                         Section  6.10
Non-Delivered Block                                                Section  1.03
Non-Delivered Partial Floor                                        Section  1.03
Notice                                                             Section  8.01
Offer Notice                                                       Section  1.06
Offer Period                                                       Section  1.06
Offer Space                                                        Section  1.06
Offer Space Option                                                 Section  1.06
Office Space                                                       Section  1.01
Offset Amount                                                      Section 10.05
Offset Notice                                                      Section 10.05
OS Inclusion Date                                                  Section  1.06
Operating Denominator                                              Section  2.05
Operating Expense Cutoff Date                                      Section  8.04
Operating Expenses                                                 Section  2.05
Operating Payment                                                  Section  2.05
Operating Year                                                     Section  2.05
Other Affected Space                                               Section  1.03
Phase I Lobby Renovation Work                                      Section  8.21
Phase I Target Date                                                Section  8.21
Phase II Lobby Renovation Work                                     Section  8.21
Phase II Target Date                                               Section  8.21
Postponement Period                                                Section  1.05
Preceding Operating Year                                           Section  8.04
Premises                                                           Section  1.01
Primary Concourse Space                                            Section  1.01
Primary Portion                                                    Section  1.03
Prime Rate                                                         Section  4.08
Project                                                            Recitals
Punch List Items                                                   Section  1.03
Qualifying Condition                                               Section  1.03
Qualifying Transactions                                            Section  5.03
Records                                                            Section  2.05
Relevant Date                                                      Section  1.03
Renewal Notice                                                     Section  9.01
Renewal Option                                                     Section  9.01
Renewal Percentage                                                 Section  9.02
Renewal Premises                                                   Section  9.01
Renewal Term                                                       Section  9.01
Rent                                                               Section  2.01
Rent Commencement Date                                             Section  2.02
Rent Notice                                                        Section  9.02
Required Restoration Work                                          Section  7.05
Rescission Acceleration Notice                                     Section  1.06
Rescission Notice                                                  Section  1.06
Rescission Right                                                   Section  1.06
Second Outside Date                                                Section  7.05
Second Tier Sublease                                               Section  5.04
Secondary Concourse Space                                          Section  1.01
Secondary Portion                                                  Section  1.03
Sub-Cellar Space                                                   Section  4.01
Sublet Rent                                                        Section  5.02
Sublet Space                                                       Section  5.02
Sublet Term                                                        Section  5.02
Substantial Completion Date                                        Section  7.05
Successor Landlord                                                 Section  6.01





Superior  Lease                                                    Section  6.01
Superior  Lessor                                                   Section  6.01
Superior  Mortgage                                                 Section  6.01
Superior Mortgagee                                                 Section  6.01
Supervisory Fee                                                    Section  3.04
Survey Notice                                                      Section  2.07
Target Date                                                        Section  1.06
Tax and Operating  Payments                                        Section  8.21
Tax Bill                                                           Section  2.04
Tax Denominator                                                    Section  2.04
Tax Payment                                                        Section  2.04
Tax Payment Date                                                   Section  2.04
Tax  Statement                                                     Section  2.04
Tax Year                                                           Section  2.04
Taxes                                                              Section  2.04
Tenant  Introduction  Tenant  Delay                                Section  1.04
Tenant Indemnified  Party                                          Section  6.12
Tenant's  Basic Cost                                               Section  5.05
Tenant's Determination                                             Section  9.02
Tenant's New Lease                                                 Section  6.10
Tenant's  Notice                                                   Section  9.02
Tenant's Offer Notice                                              Section  5.02
Tenant's Operating Share                                           Section  2.05
Tenant's Parking Spaces                                            Section  8.18
Tenant's Property                                                  Section  4.03
Tenant's Qualified Sublet Cost                                     Section  5.02
Tenant's Required Work                                             Section  4.01
Tenant's Statement                                                 Section  2.05
Tenant's Tax Share                                                 Section  2.04
Term                                                               Section  1.02
Terminated Space                                                   Section 10.03
Termination                                                        Section  6.04
Termination Notice                                                 Section  7.05
Transfer Notice                                                    Section  5.03
Unforeseen Condition                                               Section  4.01
Unpaid Commission                                                  Section  8.13
Untenantable                                                       Section  7.05
Work                                                               Exhibit  D




     LEASE (this lease, including all Exhibits attached to this lease, is called
the "Lease"), dated as of July 20, 1995, between 1290 ASSOCIATES ("Landlord"), a
New York partnership whose address is c/o Olympia & York Companies (U.S.A.), 237
Park Avenue,  New York, New York 10017, and THE EQUITABLE LIFE ASSURANCE SOCIETY
OF THE UNITED STATES  ("Tenant"),  a New York corporation,  whose address is 787
Seventh  Avenue,  New York,  New York 10019 prior to Tenant's  occupancy  of any
portion of the  Premises  for the conduct of business  therein,  and  thereafter
Tenant's address shall be that of the Building.

                          W I T N E S S E T H WHEREAS,

     Landlord  is  willing to lease to Tenant and Tenant is willing to hire from
Landlord,  on the terms  hereinafter  set  forth,  certain  space in the  office
building  located  at 1290  Avenue  of the  Americas,  New  York,  New York (the
"Building")  on the land more  particularly  described in Exhibit A (the "Land";
the Land and the Building are collectively called the "Project").

     NOW, THEREFORE, Landlord and Tenant agree as follows:

                                   ARTICLE 1

                               Premises; Term; Use

     1.01 Demise.  (a) Landlord  hereby leases to Tenant and Tenant hereby hires
from Landlord, subject to the terms and conditions of this Lease, the following:
(i) the entire 14th, 15th, 16th, 17th, 18th, 19th, 20th, 21st and 22nd floors of
the Building  substantially  as shown on the plans  thereof  attached  hereto as
Exhibits B-1 through B-9  (collectively,  the "Block A Space"),  (ii) the entire
12th and 13th floors of the Building substantially as shown on the plans thereof
attached hereto as Exhibits B-10 and B-11  (collectively,  the "Block B Space"),
(iii) the entire 11th floor of the Building  substantially  as shown on the plan
thereof attached hereto as Exhibit B-12 (the "Block C Space"; the Block A Space,
the  Block  B  Space  and  the  Block C  Space  are  individually  "Blocks"  and
collectively,  the "Office Space"),  and (iv) the portion of the concourse floor
of the Building  substantially  as shown  hatched on the plan  thereof  attached
hereto as Exhibit B-13 (the  "Primary  Concourse  Space") and the portion of the
concourse floor of the Building substantially as shown cross-hatched on the plan
thereof attached hereto as Exhibit B-13 (the "Secondary  Concourse  Space",  the
Primary  Concourse  Space and the  Secondary  Concourse  Space are  collectively
called the  "Concourse  Space" and the Office Space and the Concourse  Space are
collectively  called the  "Premises").

     (b) Landlord and Tenant  confirm that (i) the Office Space is  conclusively
deemed to contain 502,480  rentable square feet and (ii) the Concourse Space and
each floor  comprising  the Office Space is  conclusively  deemed to contain the
number of rentable square feet specified  therefor on Exhibit H attached hereto.

     1.02 Term.  (a) The term of this Lease (the "Term")  shall  commence on the
date of this Lease  (subject to the proviso in Section  1.02(b) below) and shall
end with respect to the entire  Premises,  unless  sooner  terminated  as herein
provided,  on the  last day of the  calendar  month  in  which  occurs  the 16th
anniversary of the day preceding the first Relevant Date applicable to any space
included in the Block A Space (such date,  as the same may be extended  pursuant
to Article 9, is called the "Expiration Date").

(b) For all  purposes  of this Lease  (including,  without  limitation,  for the
purposes of Section 365(h) of the Federal  Bankruptcy  Code), but subject to the
proviso  below,  the Term shall be deemed to have commenced with respect to each
of the Blocks and the Concourse Space on the date of this Lease; provided,  that
until the respective Relevant Date with respect to each Block (or the applicable
portion  thereof) and the Concourse Space (i) this Lease,  any leasehold  estate
created in such Block (or portion  thereof) and the Concourse Space hereby,  any
rights to possession,  use and enjoyment of such Block (or portion  thereof) and
the  Concourse  Space  created  or  derived  herefrom,  and  all of  the  terms,
covenants,  conditions  and  agreements of this Lease are hereby made, and shall
continue to be, subject and subordinate to the leasehold estates of all existing
tenants in such Block (or 



portion  thereof) and the Concourse Space,  their rights of possession,  use and
enjoyment of such Block (or portion  thereof) and the Concourse Space created or
derived therefrom and all of the terms, covenants,  conditions and agreements of
their leases thereto, (ii) except for the Initial Possession Space (which Tenant
may, subject to the further  provisions of this Lease,  possess,  use and occupy
from and after the date of this Lease),  Tenant shall not possess, use or occupy
such Block (or portion thereof) and the Concourse Space, (iii) Tenant shall have
no right to any rent,  income or profits accruing with respect to such Block (or
portion thereof) and the Concourse Space,  whether from the leasehold estates of
such existing tenants or otherwise,  (iv) Landlord's covenant of quiet enjoyment
set forth in Section 8.05 shall not apply to such Block (or portion thereof) and
the Concourse  Space and (v) Tenant shall have no  obligations  under this Lease
with respect to such Block (or portion thereof) and the Concourse Space,  except
that in the case of the Initial  Possession Space,  Tenant shall comply with all
of  Tenant's  obligations  under this Lease with  respect to such space from and
after the date that Tenant takes possession of such space for the performance of
Alterations or for any other purpose.

     (c) On the Adjusted  Fixed Relevant Date with respect to each Block and the
Concourse  Space,  Landlord shall deliver such Block or the Concourse  Space, as
the case may be, to Tenant;  provided,  that if Landlord fails timely to deliver
any Block or the Concourse Space on the applicable Adjusted Fixed Relevant Date,
Tenant's sole rights and remedies  shall be as expressly set forth  elsewhere in
this  Lease,  and this  Section  1.02(c)  shall not be  construed  to create any
further  rights or remedies in favor of Tenant  under this Lease or otherwise if
Landlord  so fails  timely to deliver  any Block or the  Concourse  Space.

     1.03 Relevant  Date. (a) (i) "Block A Relevant Date" means the later of (A)
January 1, 1996 (the "Block A Fixed Relevant Date") and (B) the later of (x) the
day on which the Block A Space (or the applicable  portion thereof) is delivered
to Tenant in  Delivery  Condition  and (y) the date  specified  by Landlord in a
notice to Tenant as the date on which  Landlord  anticipates  in good faith that
such space will be delivered in Delivery Condition,  which notice shall be given
not less than 10 days prior to such date; provided, that if, after the giving of
such notice,  Landlord believes that the actual delivery date will be later than
the date set forth in such notice,  then Landlord  shall keep Tenant  advised of
the status of such delay and, if the actual  delivery  date shall be more than 2
Business Days later than the date set forth in such notice,  Landlord shall give
to Tenant not less than 2  Business  Days  prior  notice of the actual  delivery
date.  (ii) "Block B Relevant  Date" means the later of (A) October 1, 1996 (the
"Block B Fixed  Relevant  Date")  and (B) the  later of (x) the day on which the
Block B Space (or the  applicable  portion  thereof) is  delivered  to Tenant in
Delivery  Condition and (y) the date specified by Landlord in a notice to Tenant
as the date on which Landlord  anticipates in good faith that such space will be
delivered  in Delivery  Condition,  which notice shall be given not less than 10
days prior to such date;  provided,  that if,  after the giving of such  notice,
Landlord  believes that the actual delivery date will be later than the date set
forth in such notice,  then Landlord  shall keep Tenant advised of the status of
such delay and, if the actual  delivery  date shall be more than 2 Business Days
later than the date set forth in such notice,  Landlord shall give to Tenant not
less than 2 Business Days prior notice of the actual delivery date. If the Block
B Space is in  Delivery  Condition  prior to  October 1,  1996,  Landlord  shall
deliver such Block to Tenant at such time;  provided,  that (I) Tenant shall not
be obligated to accept  delivery of such Block prior to October 1, 1996 and (II)
Landlord shall not be obligated to expend any additional sums to enable Landlord
to deliver  such  Block to Tenant  prior to  October  1,  1996.  (iii)  "Block C
Relevant Date" means the later of (A) March 1, 1999 (the "Block C Fixed Relevant
Date")  and (B) the  later of (x) the day on  which  the  Block C Space  (or the
applicable portion thereof) is delivered to Tenant in Delivery Condition and (y)
the date  specified  by  Landlord  in a notice  to  Tenant  as the date on which
Landlord anticipates in good faith that such space will be delivered in Delivery
Condition, which notice shall be given not less than 10 days prior to such date;
provided,  that if, after the giving of such notice,  Landlord believes that the
actual delivery date will be later than the date set forth in such notice,  then
Landlord  shall keep  Tenant  advised  of the  status of such delay and,  if the
actual  delivery date shall be more than 2 Business Days later than the date set
forth in such  notice,  Landlord  shall  give to Tenant not less than 2 Business
Days  prior  notice of the  actual  delivery  date (each of the Block A Relevant
Date,  the  Block B  Relevant  Date and the  Block C  Relevant  Date is called a
"Relevant  Date" and each of the Block A Fixed  Relevant Date, the Block B Fixed
Relevant Date and the Block C Fixed  Relevant  Date is called a "Fixed  Relevant
Date").  (iv)  Promptly  after  the  determination  of the first  Relevant  Date
applicable to any space  included in the Block A Space in  accordance  with this
Section 1.03, Landlord shall notify Tenant thereof and Landlord and Tenant shall
confirm  such  Block A  Relevant  Date  and the  Expiration  Date by a  separate
instrument. Promptly after the determination of each Relevant Date applicable to
any space included in the Block A Space, the Block B Space and the Block C Space
in accordance  with this Section 1.03,  Landlord shall notify Tenant thereof and
Landlord and Tenant shall confirm such  Relevant Date by a separate  instrument.
The failure to execute and deliver  any such  instrument  confirming  such dates
shall not affect the occurrence of any such dates in accordance with this Lease.
Any  dispute as to any  Relevant  Date shall be  determined  by  arbitration  in
accordance  with Section  8.09.  Pending the  resolution  of any dispute as to a
Relevant  Date,  Landlord's  determination  of such  Relevant Date shall govern,
without  prejudice to Tenant's  position.  If it is resolved  that such Relevant
Date was not the date so fixed by Landlord,  any Rent paid by Tenant to Landlord
with respect to the  applicable  space for periods prior to the proper  Relevant
Date,  together  with  interest  thereon at the Prime Rate from the date paid by
Tenant until credited by Landlord,  shall be credited by Landlord against future
installments  of Fixed Rent and/or  Additional  Charges  payable by Tenant.





     (b) "Delivery  Condition"  means,  with respect to any space comprising the
Office Space,  that Landlord's Work with respect to such space is deemed to have
been substantially completed in accordance with this Section 1.03(b). Landlord's
Work with  respect to any space  comprising  the Office Space shall be deemed to
have been  substantially  completed on the date upon which such  Landlord's Work
has been  completed,  other than (i) minor details or  adjustments  ("Punch List
Items"),  but only if such  details or  adjustments  shall not  interfere in any
material  respect with Tenant's ability to (A) prepare any portion of such space
for Tenant's  initial  occupancy  thereof,  or (B) thereafter use and occupy the
same for the  ordinary  conduct of Tenant's  intended use of such space (as such
intended use is shown on, or reasonably  inferable  from,  Tenant's then current
plans and specifications with respect to Tenant's initial Alterations  therein);
provided,  that such intended use is permitted  pursuant to Section  1.05,  (ii)
those items which, as set forth in Exhibit F, are not a condition to delivery of
such space and (iii) any part of  Landlord's  Work if and to the extent the same
is not completed due to Tenant Delay.  Landlord and Tenant,  within 5 days after
the Relevant Date with respect to any Block,  shall  jointly  inspect such Block
and note any Punch  List  Items  with  respect  to such  Block.  Landlord  shall
complete  any and all  such  Punch  List  Items  and any such  other  incomplete
portions of  Landlord's  Work with  respect to such Block  described  in clauses
(ii),  and (iii) above  within 30 days after such joint  inspection,  subject to
delays due to Force  Majeure,  Tenant  Delays and the  inability to complete any
such items which  cannot  with  diligence  be so  completed  within 30 days.  In
performing  such  Punch  List  Items  and  such  other  incomplete  portions  of
Landlord's Work, Landlord shall use commercially  reasonable efforts to minimize
any interference with Tenant's performance of its initial Alterations; provided,
that  Landlord  shall not be required to use overtime  labor in  performing  the
same.

     (c) If Landlord fails to deliver to Tenant,  in Delivery  Condition (i) the
Block A Space on or before October 1, 1996,  subject to Section 1.03(d) below or
(ii) the Block B Space on or before  July 1, 1997 (as the dates in  clauses  (i)
and (ii) may be extended  to the extent of any Tenant  Delay  applicable  to the
space in  question),  then  Tenant  shall  have the right,  by giving  notice to
Landlord  on or  before  the  earlier  to occur of (x) the  date  that  Landlord
delivers the applicable  Block to Tenant in Delivery  Condition and (y) the date
that is 30 days after the applicable  date specified in clause (i) or (ii) above
(time of the essence),  to terminate this Lease. In addition,  if Landlord fails
to deliver  to Tenant  all or any  portion of (A) the Block A Space on or before
October 1, 1996,  subject to Section 1.03(d) below,  (B) the Block B Space on or
before  July 1, 1997 or (C) the Block C Space on or before  December 1, 1999 (as
the dates in  clauses  (A),  (B) and (C) may be  extended  to the  extent of any
Tenant Delay  applicable to the space in  question),  then Tenant shall have the
right, by giving notice to Landlord on or before the earlier to occur of (1) the
date that Landlord delivers the applicable Block to Tenant in Delivery Condition
and (2) the date that is 30 days after the  applicable  date specified in clause
(A),  (B) or (C) above  (time of the  essence),  to  terminate  this  Lease with
respect  to, at Tenant's  option,  (I) the entire  applicable  Block or (II) the
portion of the applicable  Block which  Landlord  failed to deliver to Tenant in
Delivery Condition on or before such date. In the case of a partial termination,
Tenant shall specify in such  termination  notice the space (the "Late  Delivery
Terminated  Space") with respect to which  Tenant is  terminating  this Lease in
accordance  with this Section  1.03(c).  If Tenant  timely  gives a  termination
notice pursuant to this Section 1.03(c) and such termination is not by reason of
Landlord's  willful  refusal  to  prepare  any  space so that it is in  Delivery
Condition or to deliver to Tenant any space that is in Delivery Condition, then,
as  Tenant's  sole  remedy,  Tenant  shall be  entitled to retain so much of the
Applicable  Allowance  as is equal to the sum of (xx) a portion of the costs and
expenses  incurred by Tenant in  connection  with entering into this Lease which
bears the same  proportion  to the total of all such costs and  expenses  as the
rentable square footage of the Late Delivery Terminated Space bears to the total
rentable square footage of the Block A Space,  the Block B Space and the Block C
Space, (yy) the cost and expenses of moving into and preparing for occupancy the
applicable Late Delivery  Terminated  Space (excluding all actual costs incurred
to purchase and install Tenant's Property) and (zz) 10% of the amounts described
in clauses (xx) and (yy) above,  and any such  termination  notice shall be null
and void unless,  together  with such notice,  Tenant pays to Landlord an amount
equal to the  Applicable  Allowance  less such sum and delivers to Landlord paid
invoices or other evidence  reasonably  satisfactory to Landlord with respect to
such costs and expenses;  provided,  that if Landlord disputes the amount of any
such payment by Tenant and it is subsequently determined that the amount so paid
by  Tenant  was  less  than  the  amount  due to  Landlord  hereunder,  then the
termination of this Lease as to the applicable  Late Delivery  Terminated  Space
shall  nevertheless  be effective and Tenant shall pay to Landlord the amount of
such underpayment together with interest at the Prime Rate (or the Interest Rate
if it is determined by an arbitration in accordance  with Section 8.09 that such
underpayment was made by Tenant in bad faith) from the date of the giving of the
applicable  termination  notice until paid. If Tenant timely gives a termination
notice  pursuant to this Section  1.03(c) and such  termination  is by reason of
Landlord's  willful  refusal  to  prepare  any  space so that it is in  Delivery
Condition  or to deliver to Tenant any space that is in Delivery  Condition  (it





being  agreed  that,  to the extent  that any failure by Landlord to comply with
Landlord's  obligations  is by  reason  of  Force  Majeure,  including,  without
limitation, by reason of the holdover in any space of another tenant without the
consent of  Landlord,  such failure  shall not  constitute  Landlord's  "willful
refusal"),  then,  without limiting  Tenant's other rights and remedies,  Tenant
shall be  entitled  to  retain  the  entire  Applicable  Allowance.  "Applicable
Allowance"  means (aa) the Block A and B Allowance in the case of a  termination
of this Lease, (bb) the portion of the Block A and B Allowance  allocable to the
Block A Space in the case of a termination of this Lease as to the Block A Space
or any  portion  thereof,  (cc)  the  portion  of the  Block  A and B  Allowance
allocable to the Block B Space in the case of a termination  of this Lease as to
the Block B Space or any portion  thereof and (dd) the Block C Allowance  in the
case of a  termination  of this  Lease as to the  Block C Space  or any  portion
thereof. For purposes of clauses (bb) and (cc) above, $13,804,974 of the Block A
and B Allowance shall be deemed allocable to the Block A Space and $6,496,459 of
the Block A and B Allowance  shall be deemed  allocable to the Block B Space. If
Tenant timely gives a termination notice pursuant to this Section 1.03(c),  this
Lease  shall  terminate  in its  entirety or with  respect to the Late  Delivery
Terminated  Space, as applicable,  on the 20th day after such notice is given by
Tenant and Tenant shall surrender the Premises,  or the Late Delivery Terminated
Space,  as applicable,  to Landlord in accordance  with the terms of this Lease.
Upon a termination of this Lease with respect to less than the entire  Premises,
there shall be a pro rata reduction of Tenant's Rent obligations to reflect such
partial  termination  and  Landlord  and  Tenant  shall  promptly  enter into an
instrument  evidencing such partial termination and the reduced rentable area of
the Premises  (such rentable area to be determined in a manner  consistent  with
the method used in  calculating  the  rentable  area of the  Premises  initially
demised  under  this  Lease);  provided,  that the  failure  to enter  into such
instrument shall not affect the effectiveness of such partial  termination.

     (d) If the 22nd floor of the  Building is to be occupied by EREIM and on or
before  the date that this  Lease  would  otherwise  terminate  as to all or any
portion of the Premises by reason of  Landlord's  failure  timely to deliver the
Block A Space to Tenant in Delivery  Condition,  Landlord  delivers to Tenant in
Delivery  Condition the Block A Space other than the 22nd floor (the  "Secondary
Portion"),  then (i) the Block A Relevant Date  applicable to the portion of the
Block A Space other than the Secondary Portion (the "Primary  Portion") shall be
deemed to have  occurred on the date  Landlord so delivers to Tenant the Primary
Portion,  (ii) the Block A Relevant Date  applicable  to the  Secondary  Portion
shall occur upon the date Landlord delivers to Tenant in Delivery  Condition the
Secondary  Portion,  and the Rent  Commencement Date applicable to the Secondary
Portion shall be determined  separately  and shall occur the same period of time
after the Block A  Relevant  Date  applicable  to the  Secondary  Portion as the
period of time that the Rent Commencement Date applicable to the Primary Portion
occurs after the Block A Relevant  Date  applicable  to the Primary  Portion and
(iii)  notwithstanding  anything to the contrary contained in this Section 1.03,
Tenant  shall have no right by reason of the late  delivery  by  Landlord of the
Secondary  Portion to decline to accept  delivery of the  Primary  Portion or to
terminate  this Lease as to all or any  portion  of the  Premises,  except  that
Tenant  shall  have the  right,  subject  to and in  accordance  with the second
sentence of Section  1.03(c) above, to terminate this Lease with respect only to
all or any Secondary  Portion which has not been delivered to Tenant in Delivery
Condition  on or before  October  1, 1996 (as such date may be  extended  to the
extent of any Tenant Delay  applicable to such Secondary  Portion). 

     (e) If,  for any  reason,  Landlord  fails to  deliver to Tenant all or any
portion  of the Block A Space in  Delivery  Condition  on or before  the Block A
Fixed  Relevant  Date,  as extended by any Tenant Delay (the  "Adjusted  Block A
Fixed Relevant  Date") (and,  provided that Tenant shall have declined to accept
possession  of any portion of the Block A Space that  Landlord may have tendered
to Tenant in Delivery  Condition so that Tenant shall not then be in  possession
of any portion of the Office  Space),  then the Block A Rent  Commencement  Date
shall be postponed by (i) 1 day for each day that such failure  continues beyond
the Adjusted Block A Fixed Relevant Date to and including the 30th day after the
Adjusted  Block A Fixed  Relevant  Date,  (ii) 1.1  days for each day that  such
failure  continues beyond the 30th day after the Adjusted Block A Fixed Relevant
Date to and  including  the 60th day after the Adjusted  Block A Fixed  Relevant
Date,  (iii) 1.2 days for each day that such failure  continues  beyond the 60th
day after the Adjusted Block A Fixed Relevant Date to and including the 90th day
after the Adjusted Block A Fixed Relevant Date,  (iv) 1.3 days for each day that
such  failure  continues  beyond the 90th day after the  Adjusted  Block A Fixed
Relevant Date to and  including  the 120th day after the Adjusted  Block A Fixed
Relevant Date, (v) 1.4 days for each day that such failure  continues beyond the
120th day after the Adjusted  Block A Fixed  Relevant  Date to and including the
150th day after the Adjusted  Block A Fixed  Relevant Date and (vi) 1.5 days for
each day that such  failure  continues  beyond the 150th day after the  Adjusted
Block A Fixed  Relevant  Date.  For purposes of this Section  1.03(e),  Tenant's
right to use and occupy the Initial  Possession Space prior to the Relevant Date
applicable  to the  Initial  Possession  Space shall not be  construed  so as to
render Tenant in possession of a portion of the Office Space.





(f) If,  for any  reason,  Landlord  fails to  deliver  to  Tenant  in  Delivery
Condition  (i) a portion of the Block A Space on or before the Adjusted  Block A
Fixed Relevant  Date, but Tenant shall at such time have accepted  possession of
any one or more portions of the Block A Space that Landlord may have tendered to
Tenant so that Tenant shall then be in possession of a portion,  but not all of,
the Block A Space,  and/or  (ii) all or any  portion of the Block B Space or the
Block C Space on or before the Fixed Relevant Date  applicable to such Block, as
extended by any Tenant Delay  applicable  to such Block (the  "Adjusted  Block B
Fixed  Relevant  Date"  and  the  "Adjusted   Block  C  Fixed  Relevant   Date",
respectively;  each of the Adjusted  Block A Fixed  Relevant  Date, the Adjusted
Block B Fixed  Relevant  Date and the Adjusted  Block C Fixed  Relevant  Date is
called an "Adjusted  Fixed  Relevant  Date"),  then the Rent  Commencement  Date
applicable  to such Block or portion  thereof that was not delivered by Landlord
(or such  portion  of a Block as may have been  tendered  by  Landlord,  but not
accepted  by  Tenant)  shall be  postponed  by 1.5  days for each day that  such
failure  continues  beyond the  applicable  Adjusted Fixed Relevant Date. If the
space that Landlord so failed to deliver to Tenant or Tenant so failed to accept
from  Landlord  constitutes  less than a full  floor (a  "Non-Delivered  Partial
Floor")  (i.e.,  Landlord  shall have  tendered to Tenant  delivery of a partial
floor  and  Tenant  shall  have  accepted  delivery  of such  partial  floor  (a
"Delivered Partial Floor")), then (A) subject to the following proviso, the Rent
Commencement  Date  applicable  to the  Delivered  Partial  Floor  shall  not be
postponed by reason of such failure to deliver the Non-Delivered  Partial Floor,
and the Rent  Commencement Date applicable to such  Non-Delivered  Partial Floor
only shall be  postponed  by 1.5 days for each day that such  failure  continues
beyond the applicable  Adjusted Fixed  Relevant Date;  provided,  that if (x) as
shown  on,  or  reasonably  inferable  from,  Tenant's  then  current  plans and
specifications for such Non-Delivered  Partial Floor, such Non-Delivered Partial
Floor was to be occupied by a group of Tenant's employees that was also going to
occupy the Delivered Partial Floor, (y) upon substantial  completion of Tenant's
initial  Alterations in the Delivered  Partial Floor, such group does not occupy
any portion of the Non-Delivered Partial Floor or the Delivered Partial Floor or
any other portion of the Premises and (z) Tenant does not  otherwise  occupy the
Delivered  Partial Floor,  then the Rent  Commencement  Date with respect to the
Delivered  Partial  Floor  shall  also  be  delayed  for so  long  as  the  Rent
Commencement  Date  applicable to such  Non-Delivered  Partial Floor is delayed;
provided,  further,  that if such group occupies any portion of the Premises, or
if Tenant occupies such Delivered  Partial Floor prior to the date that Landlord
delivers such Non-Delivered  Partial Floor to Tenant, then the Rent Commencement
Date  applicable to such  Delivered  Partial Floor shall occur as of the date of
such occupancy. Notwithstanding the foregoing, if upon substantial completion of
Tenant's initial  Alterations in the Delivered Partial Floor, Tenant does occupy
the Delivered  Partial  Floor,  then  Landlord  shall  reimburse  Tenant for any
incremental costs incurred by Tenant by reason of the delivery by Landlord,  and
build-out  and occupancy by Tenant of such partial floor (in excess of the costs
that would have been  incurred by Tenant to build out such  portion of the floor
had Landlord  delivered to Tenant the full floor when required to do so pursuant
to this  Section  1.03),  such  reimbursement  to be made  within 30 days  after
delivery by Tenant to Landlord of reasonable  substantiation of such incremental
costs.  Nothing contained in this Section 1.03(f) shall be construed to obligate
Tenant to accept  delivery  by  Landlord  of a partial  floor  where  Landlord's
obligation  is to deliver an entire floor.  For purposes of Section  1.03(f)(i),
Tenant's  right to use and  occupy the  Initial  Possession  Space  prior to the
Relevant Date applicable to the Initial  Possession Space shall not be construed
so as to render Tenant in possession of a portion of the Block A Space.

     (g) If (i)  Landlord  fails to  deliver  to Tenant  any  Block in  Delivery
Condition  on or before the  Adjusted  Fixed  Relevant  Date for such Block (the
"Non-Delivered Block"), (ii) as shown on, or reasonably inferable from, Tenant's
then  current  plans  and  specifications  for such  Non-Delivered  Block,  such
Non-Delivered  Block was to be  occupied by a group of  Tenant's  employees  (an
"Essential  Group") who are an essential part of the conduct of Tenant's  normal
business  operations to be conducted at the  Premises,  such that there would be
significant hardship to the conduct of Tenant's normal business operations to be
conducted  at the  Premises  if such  Essential  Group  were not  located at the
Premises,  (iii) as shown on, or reasonably  inferable  from,  such then current
plans and  specifications,  either such  Essential  Group,  or another  group of
Tenant's  employees which is dependent upon such Essential Group and which would
suffer  significant  hardship to the  conduct of such  group's  normal  business
operations  to be  conducted  at the  Premises  if such  Essential  Group is not
operating in the Premises (a "Dependent Group"), was going to occupy other space
which Landlord had previously  delivered to Tenant in accordance  with the terms
of this Lease (the  "Other  Affected  Space"),  (iv) at the time of  delivery to
Tenant of the Other Affected  Space,  Tenant  notified  Landlord that such space
constitutes  Other  Affected  Space for  purposes of this Section  1.03(g),  (v)
neither such Essential  Group nor any such Dependent  Group occupies any portion
of the Non-Delivered Block, the Other Affected Space or any other portion of the
Premises and (vi) Tenant does not  otherwise  occupy the Other  Affected  Space,
then the Rent  Commencement Date with respect to such Other Affected Space shall
also be delayed for so long as the Rent  Commencement  Date  applicable  to such





Non-Delivered Block is delayed; provided,  further, that if such Essential Group
and/or such Dependent  Group occupies any portion of the Premises,  or if Tenant
occupies such Other Affected Space prior to the date that Landlord delivers such
Non-Delivered  Block to Tenant,  then the Rent  Commencement  Date applicable to
such Other Affected Space shall occur as of the date of such occupancy.

     (h) If  Landlord  shall be unable  to  deliver  possession  of any Block to
Tenant on or before the Adjusted Fixed Relevant Date for such Block by reason of
a holdover  tenancy in all or any portion of such Block,  (i) Landlord shall use
commercially   reasonable  efforts  (including  the  commencement  and  diligent
prosecution of summary dispossess or other appropriate proceedings) to terminate
such  holdover  tenancy and (ii)  provided  that Tenant  shall not  exercise any
termination  right  that  Tenant may have  pursuant  to this  Section  1.03 with
respect to such Block or this Lease,  Landlord  shall pay to Tenant any Holdover
Excess actually received by Landlord from the tenant holding over in such Block,
such  payment to be made by  Landlord  to Tenant  within 30 days after  Landlord
actually  receives  such Holdover  Excess from such  holdover  tenant (but in no
event  earlier  than the Relevant  Date with  respect to such Block).  "Holdover
Excess"  means,  with respect to any holdover  tenant in any space  comprising a
Block,  the excess,  if any, of (A) all moneys  actually  paid by such  holdover
tenant to Landlord  with  respect to the  holdover  period,  other than  amounts
representing a reimbursement to Landlord of Landlord's expenses (e.g.,  payments
in respect of electricity)  over (B) the sum of (x) the value of any deferral of
the Rent  Commencement  Date with respect to such Block pursuant to this Section
1.03 by reason of such holdover (e.g., if a Rent  Commencement  Date is deferred
by 1 day by reason of a holdover,  the value of such deferral  shall be equal to
the Rent  which  would  have been  payable  by Tenant  for such day but for such
deferral with respect to all of the  applicable  space with respect to which the
Rent Commencement Date is so deferred),  plus (y) any amounts which, pursuant to
the provisions of this Lease,  become payable by Landlord to Tenant by reason of
the late delivery of the applicable space as a result of such holdover, plus (z)
all unreimbursed costs and expenses actually incurred by Landlord in terminating
such holdover  tenancy. 

     (i) With respect to the  Concourse  Space,  the Term shall  commence on the
date (the  "Concourse  Relevant  Date") that Landlord  delivers to Tenant vacant
possession of such space in Qualifying  Condition,  but in no event earlier than
the first  Relevant Date  applicable to any space included in the Block A Space.
If, for any  reason,  Landlord  fails to deliver to Tenant all or any portion of
the  Concourse  Space in Qualifying  Condition on or before  January 1, 1996, as
extended by any Tenant Delay (the "Adjusted  Concourse  Fixed  Relevant  Date"),
then the  Concourse  Rent  Commencement  Date shall be postponed by 1.5 days for
each day that  such  failure  continues  beyond  the  Adjusted  Concourse  Fixed
Relevant  Date.  "Qualifying  Condition"  means,  with respect to the  Concourse
Space,  that the  Concourse  Space  Work is deemed  to have  been  substantially
completed in  accordance  with Section  1.03(b)  (other than the first  sentence
thereof);  provided, that for purposes of this Section 1.03(i) all references in
Section  1.03(b)  to  "Landlord's  Work"  shall  be  deemed  to be  replaced  by
"Concourse  Space Work" and all references in Section  1.03(b) to "Office Space"
or "Block" shall be deemed to be replaced by "Concourse Space". "Concourse Space
Work"  means (A) to the  extent  applicable  to the  Concourse  Space,  the work
described in Paragraphs 1 (which shall  include  demolition of the concrete ramp
in the Primary Concourse Space; provided, that Landlord shall not be required to
demolish or relocate  any of the items  described  in said  Paragraph 1 that are
used by (or reserved for use by) other  tenants or occupants of the Building) 2,
8, 9, 11 and 13 of Exhibit F annexed  hereto,  (B) in performing  the demolition
work with respect to the bathrooms  located in the Concourse  Space, the capping
of the plumbing  lines in such  bathrooms,  (C) the  provision of an HVAC supply
duct and return  opening to the demising wall of the  Concourse  Space or within
such space and (D) the construction of a Building  standard demising wall on the
westerly  side of the  Primary  Concourse  Space.  As part of  Tenant's  initial
Alterations to the Concourse Space,  Tenant shall have the right to tie into the
sprinkler loop located on the concourse floor of the Building.

     (j) Provided that any Block  delivered by Landlord to Tenant is in Delivery
Condition,  Tenant shall accept such Block in its "as is"  condition on the date
of such delivery.  Provided that the Concourse Space is in Qualifying  Condition
when delivered by Landlord to Tenant,  Tenant shall accept such space in its "as
is"  condition  on the date of such  delivery.  The  provisions  of this Section
1.03(j) shall not be construed to negate or diminish (i)  Landlord's  obligation
to thereafter  complete (A) those items of Landlord's  Work which, in accordance
with Exhibit F, are not a condition  to delivery of the Block in  question,  (B)
any  incomplete  Punch List Items with  respect to the Block in  question or (C)
those items, if any, of Landlord's Work which, in accordance with Exhibit F, are
a  condition  to delivery  of the Block in  question  but which  Tenant may have
hereafter agreed to allow Landlord to complete after delivery or (ii) Landlord's
repair and  maintenance  obligations as set forth  elsewhere in this Lease.





     (k) Except as may be expressly set forth in this Section 1.03,  if, for any
reason, Landlord shall be unable to deliver possession of any Block to Tenant on
or before the Adjusted Fixed Relevant Date for such Block,  the validity of this
Lease shall not be impaired,  nor shall the Term be extended, by reason thereof,
and  (unless  Landlord  willfully  refuses to prepare any Block so that it is in
Delivery  Condition  or to  deliver  to  Tenant  any Block  that is in  Delivery
Condition)  Landlord  shall have no liability to Tenant  therefor.  This Section
1.03 shall be an express provision to the contrary for purposes of Section 223-a
of the New York  Real  Property  Law and any  other  law of like  import  now or
hereafter in effect.

     (l) Except as  provided  in Section  1.03(d)  with  respect to the  Primary
Portion or the Secondary  Portion,  nothing contained in this Section 1.03 shall
be construed to permit delivery by Landlord to Tenant,  or to obligate Tenant to
accept  delivery  by  Landlord,  of a partial  Block  (except  where  Tenant has
previously accepted delivery of a partial Block and the partial Block then being
delivered by Landlord  constitutes  the  remainder  of such Block).

     1.04  Tenant  Delay.  "Tenant  Delay"  means any delay which  Landlord  may
encounter in the performance of Landlord's  obligations  under this Lease if and
to the extent caused by any act or (where Tenant has an  affirmative  obligation
to act  pursuant to the terms of this Lease)  omission of Tenant,  its agents or
contractors,  including,  without limitation,  delays by Tenant in submission of
information  required to be  submitted  pursuant to the terms of this Lease,  or
giving authorizations or approvals required to be given pursuant to the terms of
this Lease;  provided,  that no such delay shall  constitute  a Tenant  Delay if
Landlord,  using  reasonable  prudence  and  diligence,  but without  additional
expense,  could avoid such delay,  and no such delay shall  constitute  a Tenant
Delay to the extent it occurs  after  Landlord  has actual  knowledge  or should
reasonably have knowledge of such delay and before  Landlord  notifies Tenant of
such  Tenant  Delay (it being  understood  that in all events  such delay  shall
constitute a Tenant Delay to the extent it occurs after Landlord notifies Tenant
of such Tenant  Delay).  If Landlord  notifies  Tenant of the  occurrence of any
Tenant Delay, upon Tenant's request,  Landlord shall notify Tenant of Landlord's
estimate of the duration of such Tenant Delay.  Tenant shall pay to Landlord any
reasonable costs or expenses if and to the extent incurred by Landlord by reason
of any Tenant Delay.  Any dispute as to the  existence,  duration or cost of any
Tenant Delay shall be determined by arbitration in accordance with Section 8.09.

     1.05 Use.  (a) The  Premises  may be used and  occupied  solely as general,
professional,  administrative  and executive  offices  (including such ancillary
uses in connection  therewith as shall be  reasonably  required by Tenant in the
operation of its business, which ancillary uses may include, without limitation,
the  following  (but only to the extent  such uses are  ancillary  to use of the
Premises as general,  professional,  administrative and executive offices and in
no event shall any of such uses be made  available  to the general  public or to
more than 200  employees  of Tenant (at any one time) who are not located at the
Building):  (i) cafeterias and "convenience  areas" which  convenience areas may
include coffee stations,  mini  refrigerators,  small stoves and microwave ovens
(each, a "Cafeteria");  provided,  that in the case of each such Cafeteria where
cooking will be done (other than any Cafeteria where only microwave cooking will
be done) (A) Tenant  shall  install  all flues,  vents,  grease  traps and ansul
systems and other similar  items  reasonably  requested by Landlord,  (B) Tenant
shall  install an exhaust  system that, in Landlord's  reasonable  judgment,  is
consistent with the standards of a first-class office building in Manhattan, (C)
all ducts and flues shall be  installed  within the  Premises and shall exit the
Building  from a location  reasonably  acceptable  to Landlord  and Tenant,  (D)
Tenant shall clean all grease traps, (E) Tenant shall bag all wet garbage, place
such garbage in containers  that prevent the escape of odors,  and provide for a
refrigerated  waste  facility to store such  garbage  pending  disposal  and (F)
Tenant shall contract with an exterminator  (such  exterminator to be subject to
Landlord's  reasonable  approval) to exterminate vermin and rodents on a regular
basis as part of a program to keep the  Premises  free of vermin and  rodents by
reason of the operation of each such  Cafeteria;  and provided  further,  in the
case of each such  Cafeteria  (whether or not cooking will be done),  (x) Tenant
shall not allow any odors to escape from the  Premises to other  portions of the
Project and (y) Tenant  shall  otherwise  maintain  and operate  each  Cafeteria
consistent  with the  standards of a first-class  office  building in Manhattan,
(ii) an  infirmary,  (iii) a health and  fitness  facility;  provided,  that the
entire floor on which such health and fitness facility is located and the entire
floor  immediately  above and the entire  floor  immediately  below the floor on
which such  health and  fitness  facility  is located  shall be fully  leased by
Tenant,  (iv) an emergency  childcare facility and (v) storage space,  mailroom,
copying/reproduction facility, messenger center, chauffeur's office and archives
(the  ancillary  uses described in clauses (i) through (iv) above are called the
"Identified  Ancillary  Uses")).  Notwithstanding  anything  in Section  4.06 or
elsewhere  in this  Lease  to the  contrary,  Tenant  shall be  responsible  for
complying with all Laws applicable to the use of the Premises for the Identified
Ancillary  Uses and for  obtaining,  at  Tenant's  sole  cost and  expense,  all
consents, approvals and permits (including, without limitation, any amendment to
the  certificate of occupancy for the Building and any public  assembly  permit)





required  by  reason of any such use and  Landlord  makes no  representation  to
Tenant as to the suitability of the Premises for any of the Identified Ancillary
Uses.  Landlord,  at Tenant's reasonable expense,  shall cooperate with Tenant's
efforts to obtain any such consents,  approvals and permits, including,  without
limitation,  executing and delivering  any documents or  instruments  reasonably
required by Tenant in connection therewith.  If Tenant shall be unable to obtain
any such consent,  approval or permit by reason of any  violation  noted against
the Building (other than a violation that is the obligation of Tenant to remove)
Landlord  shall,  promptly after notice of such violation from Tenant,  commence
and diligently  pursue the removal of such  violation. 

     (b) If Tenant  shall have  obtained a temporary  certificate  of  occupancy
permitting use of a portion of the Premises for public  assembly  purposes,  but
shall be unable to obtain a final  certificate  of occupancy  permitting  use of
such  portion of the  Premises  for public  assembly  purposes  by reason of any
violation  noted  against the  Building  (other than any  violation  that is the
obligation  of Tenant to remove),  Landlord  shall timely  obtain all  necessary
renewals  of such  temporary  certificate  of  occupancy.  If Tenant  shall have
obtained a temporary certificate of occupancy permitting use of a portion of the
Premises for public assembly purposes, and at any time thereafter,  by reason of
a violation  noted against the Building  (other than any  violation  that is the
obligation of Tenant to remove),  the  certificate of occupancy for the Building
shall no longer  permit use of such portion of the Premises for public  assembly
purposes  such that Tenant  shall be unable to use such  portion of the Premises
for its intended  purpose (as shown on, or reasonably  inferable from,  Tenant's
then current plans and  specifications  for such space) then, with respect to so
much of such space as shall not be  occupied  by Tenant for such  purpose (i) if
the Rent Commencement Date with respect to such space has not yet occurred, such
Rent   Commencement   Date  shall  be  postponed  for  a  period  of  time  (the
"Postponement  Period")  equal to the number of days  beginning on the date that
Tenant is first  unable to occupy such space for such  purpose and ending on the
earlier of (A) the date that  Tenant may again use such space for such  intended
purpose or (B) the date that Tenant would be legally permitted to use such space
for such intended  purpose but for any act or (where  Tenant has an  affirmative
obligation to act pursuant to the terms of this Lease)  omission of Tenant,  its
agents or contractors or (ii) if the Rent Commencement Date with respect to such
space has then  occurred,  the Fixed Rent and Additional  Charges  applicable to
such space  shall be abated  until the  earlier of (A) the date that  Tenant may
again use such space for such intended purpose or (B) the date that Tenant would
be legally permitted to use such space for such intended purpose but for any act
or (where Tenant has an  affirmative  obligation to act pursuant to the terms of
this Lease) omission of Tenant, its agents or contractors.  Notwithstanding  the
foregoing, if Tenant shall permanently change the use of such space to a purpose
that does not  require  a public  assembly  permit,  then as of the date of such
change any  Postponement  Period under clause (i) above,  and any rent abatement
under clause (ii) above,  shall end.

     (c) Anything contained in this Section 1.05 to the contrary notwithstanding
(i) in no event  shall  the  Premises  be used for any of the  following:  (A) a
retail  banking,  trust  company or safe  deposit  business  serving the general
public, (B) a retail savings bank, savings and loan association, or loan company
serving  the  general  public,  (C) the  retail  sale to the  general  public of
travelers' checks and/or foreign  exchange,  (D) a retail stock brokerage office
or for stock brokerage  purposes  serving the general public,  (E) a restaurant,
bar or for the  sale of  food or  beverages,  except  as  permitted  in  Section
1.05(a)(i) above, (F) photographic  reproductions and/or offset printing,  other
than such reproduction or printing which is ancillary to the use of the Premises
as  general,   professional,   administrative  and  executive  offices,  (G)  an
employment or travel agency, except to service Tenant's employees,  (H) a school
or classroom,  except that Tenant may use part of the Premises for classroom and
educational  purposes  to the  extent  such use is  ancillary  to the use of the
Premises as general,  professional,  administrative and executive  offices,  (I)
medical or  psychiatric  offices,  except as  permitted  in Section  1.05(a)(ii)
above,  (J)  conduct of an  auction,  (K)  gambling  activities,  (L) conduct of
obscene or  pornographic  activities,  (M) offices of an agency,  department  or
bureau of the United States  Government,  any state or  municipality  within the
United States or any foreign government,  or any political subdivision of any of
them  unless,  in  any  such  case,  Tenant   establishes,   to  the  reasonable
satisfaction  of Landlord,  that both such agency,  department or bureau and the
persons who will be  occupying  the  Premises  (w) do not possess  sovereign  or
diplomatic  immunity,  (x) are subject to the  jurisdiction of state and federal
courts  located in the State of New York,  (y) may be served with legal  process
within the State of New York and (z) are not  inconsistent  with the first-class
character of the Building,  (N) offices of any charitable,  religious,  union or
other  not-for-profit  organization  which is inconsistent  with the first-class
character  of the  Building;  provided,  that in no event  shall  the  aggregate
rentable  square  feet  occupied  by  charitable,  religious,  union  and  other
not-for-profit  organizations  exceed 25,000  rentable square feet in the Office
Space,  or (O)  offices of any tax exempt  entity  within the meaning of Section
168(h)(2) of the Internal Revenue Code of 1986, as amended,  or any successor or





substitute  statute  or  rule  or  regulation   applicable  thereto,   which  is
inconsistent with the first-class character of the Building;  provided,  that in
no event  shall the  aggregate  rentable  square  feet  occupied  by such exempt
entities exceed 25,000 rentable square feet in the Office Space,  and (ii) in no
event shall the Premises be used for any purpose  which would  materially  lower
the  first-class  character  of the  Building  (Landlord  acknowledges  that the
Premises may be used by Tenant, in whole or in part, for so-called "back office"
uses and that  such  use,  in and of  itself,  would  not  materially  lower the
first-class  character  of  the  Building),   materially  impair  or  materially
interfere  with any of the Building  operations,  constitute a public or private
nuisance,  unreasonably  interfere with or disturb  Landlord,  actually  disturb
another  tenant or occupant of the Building or materially  impair the appearance
of the Building.  Any use of the Premises for any purpose which violates  clause
(ii) above is hereinafter referred to as an "Improper Use." If Landlord notifies
Tenant  that the  Premises  are  being  used in a manner  which  constitutes  an
Improper  Use,  such use shall not  constitute a default under this Lease unless
(1) it is finally determined by arbitration in accordance with Section 8.09 that
such use  constitutes  an Improper Use and, if Tenant shall not have  previously
ceased such use of the  Premises  in  accordance  with clause (2) below,  Tenant
shall not  immediately  cease such use of the  Premises or (2) Tenant shall not,
immediately  upon  receipt of such notice from  Landlord,  cease such use of the
Premises pending the resolution of such dispute by arbitration;  provided,  that
Tenant  shall not be  required  to cease such use of the  Premises  pending  the
resolution  of such dispute by  arbitration  if Tenant shall have been using the
Premises  in such manner on a regular  basis for longer than 1 year. 

     (d) Tenant shall have access to the Premises for the uses permitted in this
Section  1.05,  on a 24 hours per day, 365 days per year,  basis.

     1.06 Tenant's Right of First Offer. (a) As used herein:  "Available" means,
as to any space,  that such  space is vacant  and free of any  present or future
possessory  right  now or  hereafter  existing  in  favor  of any  third  party;
provided,  that (i) until the end of the Offer Period,  Landlord shall not grant
to any third party a right of renewal  with  respect to any Offer  Space  (other
than (A) any  rights of renewal in favor of Warner  Communications  Inc.  or any
Affiliate of Warner  Communications Inc. or (B) any rights of renewal granted in
connection  with a new  leasing of any Offer  Space to another  tenant),  or any
right of offer,  right of first  refusal or expansion  right with respect to any
Offer Space  which is prior in right to Tenant's  right of first offer set forth
in this Section 1.06 (other than any expansion  obligation on the part of Warner
Communications  Inc., or any Affiliate of Warner  Communications Inc.; provided,
that such expansion obligation either exists on the date of this Lease or is set
forth in a written  agreement between Landlord and such party entered into on or
before the 1st  anniversary  of the date of this  Lease),  (ii) any Offer  Space
which is  subleased  to Landlord by another  tenant by virtue of a provision  in
such  tenant's  lease  similar to  Landlord's  right of first offer set forth in
Section  5.02  shall be deemed to be  Available  for the term of such  sublease,
(iii) any space  which is vacant on the date of this  Lease  shall not be deemed
Available unless and until such space is first leased to another tenant and then
again becomes Available and (iv) following the vacating of the 23rd floor of the
Building by the tenants occupying such floor on the date of this Lease, Landlord
shall  have the right to lease such  floor to any third  party that also  leases
from  Landlord at least the 24th and 25th floors of the  Building,  and the 23rd
floor of the Building  shall not be deemed to be Available  unless and until the
same becomes Available after the leasing thereof to any such third party. If any
third party has a right to renew or extend a lease of any Offer  Space,  whether
granted before or after the date of this Lease,  nothing  contained herein shall
be construed to prohibit  Landlord  (without first offering such space to Tenant
hereunder)  from renewing or extending such party's lease on terms other than as
set forth in such party's  lease,  so long as such renewal or extension is for a
period of time not longer than that contemplated in such party's lease. Landlord
shall promptly  notify Tenant of any expansion  agreement  between  Landlord and
Warner  Communications Inc. or any Affiliate of Warner Communications Inc. which
contains an expansion  obligation on such party's part with respect to any Offer
Space and which is entered into on or before the 1st  anniversary of the date of
this  Lease,  which  notice  shall  specify  the Offer  Space  affected  by such
expansion  obligation  and the  commencement  date and  expiration  date of such
party's leasing of such space. "Offer Period" means the period commencing on the
Block A Relevant  Date to and  including the date that is 18 months prior to the
last day of the  initial  Term of this  Lease;  provided,  that if Tenant  shall
exercise  the Renewal  Option,  then upon the giving of the  Renewal  Notice the
Offer Period shall be extended  until (and  including)  the date that is 3 years
prior to the  Expiration  Date.  "Offer  Space" means any space on the 7th, 8th,
9th, 10th and 23rd floors of the Building. Landlord and Tenant confirm that each
floor constituting  Offer Space is conclusively  deemed to contain the number of
rentable  square  feet  specified  therefor  on  Exhibit H annexed  hereto.





     (b)  Provided  (i) this Lease shall not have been  terminated,  (ii) Tenant
shall not be in default under this Lease after notice and beyond all  applicable
grace periods, and (iii) Tenant and/or any Affiliated subtenants of Tenant shall
then occupy not less than 50% of the  Premises,  if at any time during the Offer
Period any Offer Space either becomes, or Landlord  reasonably  anticipates that
within the next 18 months (but not later than the last day of the Offer  Period)
such Offer Space will become,  Available,  Landlord  shall give to Tenant notice
(an "Offer Notice") thereof, specifying (A) Landlord's determination of the fair
market  rental value for such Offer Space,  (B) the date or estimated  date that
such Offer Space has or shall  become  Available  (the "Target  Date"),  (C) the
location  and  rentable  area of such  Offer  Space  (such  rentable  area to be
determined  in a manner  consistent  with the  method  used in  calculating  the
rentable area of the Premises  initially demised under this Lease), (D) the term
for which  such  Offer  Space is  Available;  provided,  that such term shall be
coterminous  with the Term  unless  such  Offer  Space is  subject to any future
possessory  right then  existing in favor of any third party,  in which case the
term shall expire on the day immediately  prior to the date during the Term that
such  future  possessory  right  shall  mature,  and (E) such  other  matters as
Landlord may deem  appropriate  for such Offer  Notice.  The "fair market rental
value" for any Offer  Space means the fixed  annual  rent that a willing  lessee
would  pay and a  willing  lessor  would  accept  for  such  Offer  Space  in an
arms-length transaction, taking into account all relevant factors at the time in
question.  

     (c) Provided  that on the date that Tenant  exercises an Offer Space Option
(i) this  Lease  shall not have been  terminated,  (ii)  Tenant  shall not be in
default under this Lease after notice and beyond all  applicable  grace periods,
(iii) Tenant  and/or any  Affiliated  subtenants of Tenant shall occupy not less
than 50% of the Premises and (iv) if required pursuant to Section 1.06(n) below,
Tenant  shall have  exercised  the Renewal  Option,  then Tenant  shall have the
option (an "Offer Space Option"), exercisable by notice (an "Acceptance Notice")
given to  Landlord on or before the date that is 60 days after the giving of the
applicable  Offer Notice (time being of the essence) to include such Offer Space
in the Premises. 

     (d) If Tenant timely gives an  Acceptance  Notice with respect to any Offer
Space,  but disagrees with  Landlord's  determination  of the fair market rental
value for such Offer Space as set forth in the applicable  Offer Notice,  Tenant
shall so notify  Landlord in such  Acceptance  Notice and shall  either  specify
therein  Tenant's  determination  of the fair market rental value for such Offer
Space  or  state   therein  that  Tenant  shall  notify   Landlord  of  Tenant's
determination  of such fair market  rental value within 30 days after the giving
of such Acceptance  Notice.  If such dispute is not resolved between the parties
within 20 days  after the date that  Tenant  advises  Landlord  (whether  in the
applicable  Acceptance Notice or in such notice given within 30 days thereafter)
of Tenant's  determination of the fair market rental value for such Offer Space,
such dispute shall be settled in accordance with Section  9.02(d).  The fees and
expenses of any  arbitration of the fair market rental value for any Offer Space
shall be borne by the parties equally,  but each party shall bear the expense of
its own  arbitrator,  attorneys  and  experts  and  the  additional  expense  of
presenting  its own proof.  If Tenant  timely  gives an  Acceptance  Notice with
respect to such Offer Space,  but fails in such  Acceptance  Notice to object to
Landlord's determination of the fair market rental value for such Offer Space as
set forth in the applicable Offer Notice,  then Landlord's  determination of the
fair market rental value as so set forth shall govern with respect to such Offer
Space.  If Tenant timely gives an  Acceptance  Notice with respect to such Offer
Space and in such Acceptance Notice Tenant informs Landlord that Tenant disputes
Landlord's determination of the fair market rental value for such Offer Space as
set forth in the applicable  Offer Notice and that Tenant shall notify  Landlord
of Tenant's  determination  of the fair market rental value for such Offer Space
within 30 days after the date that Tenant  delivers  such  Acceptance  Notice to
Landlord  and Tenant  fails to deliver  such  rental  determination  to Landlord
within such 30-day  period,  then  Landlord's  determination  of the fair market
rental value as set forth in such Offer Notice shall govern with respect to such
Offer Space.

     (e) If Tenant timely gives an Acceptance  Notice,  then (subject to Section
1.06(g) below) on the date on which Landlord  delivers vacant possession of such
Offer Space to Tenant (the "OS Inclusion  Date"),  such Offer Space shall become
part of the  Premises,  upon all of the terms and  conditions  set forth in this
Lease,  except (i) Fixed Rent with  respect to such Offer Space shall be payable
from and after the  applicable  OS  Inclusion  Date and shall be 95% of the fair
market  rental  value for such  Offer  Space (A) as set forth in the  applicable
Offer Notice or (B) as agreed to by Landlord and Tenant within the 20 day period
set forth in Section  1.06(d) or (C) as determined  in  accordance  with Section
9.02(d),  as the case may be, (ii)  Tenant's  Tax Share and  Tenant's  Operating
Share shall each be proportionately  increased based upon the number of rentable
square feet contained in such Offer Space as set forth in the  applicable  Offer





Notice, (iii) (A) if the rentable square footage of such Offer Space constitutes
67% or more of the total  rentable  square  footage  of the floor on which  such
Offer Space is located,  then such Offer Space shall, to the extent  applicable,
be delivered in Delivery Condition (except that, if such Offer Space constitutes
a partial  floor,  Landlord shall not be required to demolish or relocate any of
the items  described in Paragraph 1 of Exhibit F annexed hereto that are used by
(or reserved for use by) other tenants or occupants of the  Building;  provided,
that upon request by Tenant,  Landlord  shall, at Tenant's  reasonable  expense,
relocate any of such  items),  and (B) if the  rentable  square  footage of such
Offer Space  constitutes  less than 67% of the total rentable  square footage of
the floor on which  such  Offer  Space is  located,  then  Landlord  shall  have
demolished  such Offer Space in accordance with Paragraph 1 of Exhibit F annexed
hereto,  except that Landlord  shall not be required to demolish or relocate any
of the items described in said Paragraph 1 that are used by (or reserved for use
by) other tenants or occupants of the Building  (provided,  that upon request by
Tenant,  Landlord shall, at Tenant's  reasonable  expense,  relocate any of such
items) and Landlord,  to the extent  applicable,  shall have  performed the work
described in Paragraphs 2, 9, 10, 11, 12, 13 and 15 of Exhibit F annexed hereto,
(iv) except as specified in clause (iii) above, and except for any other work or
allowance  specified  in the  applicable  Offer  Notice,  Landlord  shall not be
required to perform any work,  pay any work  allowance or any other  amount,  or
render any services to make such Offer Space ready for Tenant's use or occupancy
and,  subject to Landlord's  compliance with its obligations set forth in clause
(iii) above and as may be set forth in the applicable Offer Notice, Tenant shall
accept such Offer Space in its "as is" condition on the  applicable OS Inclusion
Date and (v) as may be otherwise set forth in the applicable  Offer Notice.  The
provisions of clause (iv) above shall not be construed to negate or diminish (x)
Landlord's  obligation to complete  after the  applicable OS Inclusion  Date (1)
those items of the work  required to be  performed  by Landlord  with respect to
such Offer Space  which,  in  accordance  with Exhibit F, are not a condition to
delivery,  (2) any incomplete  Punch List Items with respect to such Offer Space
or (3) those  items,  if any, of the work  required to be  performed by Landlord
with  respect to such Offer Space  which,  in  accordance  with Exhibit F, are a
condition  to delivery  but which  Tenant may have  agreed to allow  Landlord to
complete after delivery or (y) Landlord's repair and maintenance  obligations as
set forth  elsewhere  in this  Lease.

     (f) If  Landlord  is unable to  deliver  possession  of any Offer  Space to
Tenant for any reason on or before the Target Date for such Offer  Space,  then,
except as set forth in Section  1.06(g),  the OS Inclusion  Date with respect to
such  Offer  Space  shall be the date on which  Landlord  is able to so  deliver
possession of such Offer Space.  If Landlord is unable to so deliver  possession
of any Offer Space, the validity of this Lease shall not be impaired,  nor shall
the Term be extended by reason thereof,  and (unless Landlord  willfully refuses
to prepare any Offer Space so that it is in Delivery  Condition or to deliver to
Tenant any Offer Space that is in  Delivery  Condition)  Landlord  shall have no
liability to Tenant  therefor.  This  Section  1.06(f)  constitutes  "an express
provision to the contrary"  within the meaning of Section 223(a) of the New York
Real  Property  Law and any other law of like import now or hereafter in effect.

     (g) If,  for any reason  whatsoever,  Landlord  fails to deliver  any Offer
Space on or before the date that is 60 days after the Target Date for such Offer
Space (the "First  Rescission  Date"),  then  Tenant,  as  Tenant's  sole remedy
(except in a case of Landlord's  willful  failure to comply with its obligations
under this Section 1.06), shall have the right (a "Rescission Right"), by notice
(a "Rescission  Notice") given to Landlord on or before the date that is 10 days
after the First  Rescission Date, to notify Landlord that if such Offer Space is
not delivered to Tenant on or before the date that is 30 days after Tenant gives
such Rescission Notice to Landlord,  Tenant's  Acceptance Notice with respect to
such Offer  Space  shall be deemed to be  rescinded.  If Tenant  timely  gives a
Rescission Notice to Landlord,  then Tenant's  Acceptance Notice with respect to
such Offer Space shall be deemed to be rescinded  unless  Landlord shall deliver
such Offer Space to Tenant on or before the date which is 30 days after the date
that Tenant gives such  Rescission  Notice to Landlord,  in which event Tenant's
exercise of such Rescission Right shall be null and void. If Tenant timely gives
the  Rescission  Notice to  Landlord,  Landlord  shall  have the right to give a
notice (a  "Rescission  Acceleration  Notice") to Tenant  notifying  Tenant that
Tenant's  Acceptance  Notice with respect to such Offer Space shall be deemed to
be  rescinded  as of the date that  Landlord  gives such  notice to  Tenant.  If
Landlord gives a Rescission  Acceleration Notice to Tenant,  Tenant's Acceptance
Notice  with  respect to such Offer Space  shall be deemed to be  rescinded  and
Landlord  shall have no further  right or obligation to deliver such Offer Space
to Tenant.  If Tenant shall not have so exercised any such Rescission  Right and
Landlord shall not, within 90 days after the First  Rescission Date (such 90 day
period, and each 90 day period thereafter being hereinafter referred to as a "90
Day Offer Space Interval"),  have so delivered such Offer Space to Tenant,  then
Tenant shall, within 10 days after the initial 90 Day Offer Space Interval,  and
within 10 days after each  succeeding 90 Day Offer Space  Interval  during which
Landlord continues so to fail to deliver the applicable Offer Space, as Tenant's
sole remedy (except in a case of Landlord's  willful  failure to comply with its
obligations  under this  Section  1.06),  again have the right to exercise  such





Rescission  Right by giving a Rescission  Notice to Landlord  within such 10 day
period.  If Tenant  timely gives any such  Rescission  Notice to Landlord,  then
Tenant's  Acceptance  Notice with respect to such Offer Space shall be deemed to
be  rescinded  unless  Landlord  shall  deliver such Offer Space to Tenant on or
before  the date  which  is 30 days  after  the  date  that  Tenant  gives  such
Rescission  Notice  to  Landlord,  in  which  event  Tenant's  exercise  of such
rescission  right  shall be null and  void.  If  Tenant  timely  gives  any such
Rescission Notice to Landlord, Landlord shall have the right to give to Tenant a
Rescission  Acceleration  Notice, in which event Tenant's Acceptance Notice with
respect to such Offer Space shall be deemed to be  rescinded  upon the giving of
such Rescission  Acceleration Notice and Landlord shall have no further right or
obligation to deliver such Offer Space to Tenant. Upon any exercise by Tenant of
a Rescission Right,  Landlord shall have no further obligations and Tenant shall
have  no  further  rights  pursuant  to  Section  1.06(k)  with  respect  to the
applicable Offer Space (but the foregoing shall not be construed as a limitation
of Tenant's  rights and remedies in the event of the willful failure by Landlord
to  comply  with  any of the  provisions  of this  Section  1.06).  If  Tenant's
Acceptance  Notice  with  respect  to any  Offer  Space  shall be  deemed  to be
rescinded  pursuant  to this  Section  1.06(g)  Landlord  shall  have no further
obligation to offer such Offer Space to Tenant unless and until such Offer Space
is leased and thereafter  again becomes  Available.  Time is of the essence with
respect  to all of the time  periods  set  forth in this  Section  1.06(g).  For
purposes  of this  Section  1.06(g),  any  failure by  Landlord  to comply  with
Landlord's  obligations  under  this  Section  1.06 by reason of Force  Majeure,
including, without limitation, by reason of the holdover in the applicable Offer
Space by another  tenant  without the consent of Landlord,  shall not constitute
Landlord's  "willful  failure." 

     (h) If Tenant fails timely to give an Acceptance Notice with respect to any
Offer  Space,  then (i) Landlord may enter into one or more leases of such Offer
Space  with  third  parties  on such  terms and  conditions  as  Landlord  shall
determine, the Offer Space Option with respect to such Offer Space shall be null
and void and of no  further  force and effect  and,  except as  provided  in the
following  sentence,  Landlord  shall have no further  obligation  to offer such
Offer Space to Tenant unless and until such Offer Space is leased and thereafter
again becomes Available, and (ii) Tenant, promptly following demand by Landlord,
shall execute an instrument  confirming that the Offer Space Option with respect
to such Offer  Space has been  waived by Tenant and that,  except as provided in
the following  sentence,  Landlord has no further obligation to offer such Offer
Space to  Landlord  unless and until such Offer  Space is leased and  thereafter
again  becomes  Available,  but the  failure  by  Tenant  to  execute  any  such
instrument  shall not affect the provisions of clause (i) above. If Tenant fails
timely to give an Acceptance Notice with respect to any Offer Space and Landlord
has not entered  into a lease of such Offer  Space with a third party  within 12
months  after the last day of the 60-day  period  set forth in  Section  1.06(c)
during which Tenant was  entitled to give an  Acceptance  Notice with respect to
such Offer  Space,  then  Landlord  shall once again  offer such Offer  Space to
Tenant,  subject to, and in accordance  with,  the terms and  conditions of this
Section 1.06. 

     (i) Promptly  after the occurrence of the OS Inclusion Date with respect to
any Offer Space,  Landlord and Tenant shall confirm the  occurrence  thereof and
the  inclusion of such Offer Space in the  Premises by  executing an  instrument
reasonably  satisfactory  to Landlord  and  Tenant;  provided,  that  failure by
Landlord or Tenant to execute such instrument  shall not affect the inclusion of
such Offer Space in the Premises in accordance with this Section 1.06.

     (j) If in the  Acceptance  Notice with  respect to any Offer  Space  Tenant
disputes Landlord's determination of the fair market rental value for such Offer
Space and the final  determination of such fair market rental value shall not be
made on or before the  applicable  OS  Inclusion  Date,  then pending such final
determination,  Tenant shall pay, as Fixed Rent for such Offer Space,  an amount
equal to 95% of the  average of  Landlord's  determination  of such fair  market
rental  value  as  set  forth  in  the  applicable  Offer  Notice  and  Tenant's
determination  of such fair market  rental value as set forth in the  applicable
Acceptance  Notice or, if applicable,  the  applicable  notice given to Landlord
within 30 days after Tenant gives such Acceptance Notice to Landlord.  If, based
upon the final  determination  of such fair market rental value,  the Fixed Rent
payments made by Tenant for such Offer Space were (i) less than such fair market
rental value as finally  determined,  Tenant shall pay to Landlord the amount of
such  deficiency  within 30 days after demand therefor or (ii) greater than such
fair market rental value as finally determined, Landlord shall credit the amount
of such excess  against  future  installments  of Fixed Rent  and/or  Additional
Charges payable by Tenant.

     (k) If Landlord shall be unable to deliver possession of any Offer Space to
Tenant on or before the Target Date for such Offer Space by reason of a holdover
tenancy in all or any  portion  of such  Offer  Space,  (i)  Landlord  shall use
commercially   reasonable  efforts  (including  the  commencement  and  diligent
prosecution of summary dispossess or other appropriate proceedings) to terminate
such holdover  tenancy and (ii) provided that Tenant shall not rescind  Tenant's





Acceptance  Notice with respect to such Offer Space pursuant to Section 1.06(g),
Landlord shall pay to Tenant any Holdover Profit  actually  received by Landlord
from the tenant  holding  over in such Offer  Space,  such payment to be made by
Landlord to Tenant within 30 days after Landlord actually receives such Holdover
Profit from such holdover  tenant (but in no event earlier than the OS Inclusion
Date with respect to such Offer Space). "Holdover Profit" means, with respect to
any tenant which holds over in any Offer Space,  the excess,  if any, of (A) all
monies  actually  paid by such  holdover  tenant to Landlord with respect to the
holdover period,  other than amounts representing a reimbursement to Landlord of
Landlord's expenses (e.g., payments in respect of taxes,  operating expenses and
electricity),  over (B) the sum of (x) the Fixed Rent which  would be payable by
Tenant with respect to the space in which such holdover  occurs for the holdover
period  (assuming  for  purposes  hereof  that the Rent  Commencement  Date with
respect to such space had already occurred) plus (y) all unreimbursed  costs and
expenses actually incurred by Landlord in terminating such holdover tenancy.

     (l) Notwithstanding  the foregoing  provisions of this Section 1.06, if, at
any time after  Tenant's  delivery of an  Acceptance  Notice with respect to any
Offer Space and before the OS  Inclusion  Date with respect to such Offer Space,
this Lease shall be terminated,  then such  Acceptance  Notice shall be null and
void and of no further  force and effect and Tenant shall have no further  right
or option to lease such Offer Space.

     (m) As part of Tenant's initial Alterations to any Offer Space of less than
an entire floor that is included in the  Premises,  Tenant shall have the right,
subject to Section 4.02 and the other provisions of this Lease, (i) to install a
telephone (for internal  communication on Tenant's telephone system, but not for
outside  calling)  in the public  corridor  outside the entry door to such Offer
Space,  (ii) to run a sprinkler  loop above the  ceiling in the public  corridor
outside  such  Offer  Space,  and (iii) to request  that  Landlord  install,  at
Tenant's reasonable expense, a submeter to measure the consumption and demand of
electricity  in such Offer  Space.  If (A) the rentable  square  footage of such
Offer Space  constitutes 50% or more of the total rentable square footage of the
floor on which such Offer Space is located,  (B) there are at least 2 electrical
closets on such floor and (C) one of such  electrical  closets is not being used
by another  occupant of such floor,  then Tenant shall have the exclusive use of
such electrical closet that is not being used. If such Offer Space satisfies the
square  footage  requirement   described  in  the  preceding  sentence  and  all
electrical  closets on the floor on which such Offer  Space is located are being
used by other occupants of such floor, Tenant shall have the right to rewire one
of such electrical closets designated by Landlord so as to permit Tenant to have
the exclusive use of such electrical closet. Such rewiring shall be performed by
Landlord with reasonable  diligence,  at Tenant's reasonable  expense,  but in a
manner  and at such  times so as to not  interfere  (other  than to a de minimis
extent) with the business  operations of the occupant of such floor who is using
such  electrical  closet.

     (n)   Anything   contained   in  this   Section   1.06   to  the   contrary
notwithstanding,  with  respect  to any  Offer  Space  which  becomes,  or which
Landlord reasonably anticipates will become, Available on or after the date that
is 3 years  prior to the last day of the  initial  Term of this  Lease and on or
before the date that is 18 months  prior to the last day of the initial  Term of
this  Lease,  then Tenant  shall not have the right to exercise  the Offer Space
Option with respect to such Offer Space (and any attempt to exercise  same shall
be null and void) unless (i) Tenant,  together  with or before the giving of the
Acceptance  Notice therefor,  also gives to Landlord the Renewal Notice and (ii)
if the  Renewal  Premises  is to  consist  of less  than all of the  space  then
included in the Premises,  the  applicable  "Offer Space" shall continue to meet
the  definition  of Offer  Space  after  application  of Section  8.24(c)  (such
application to be determined as though the Renewal  Premises were the only space
then leased by Tenant).


                                    ARTICLE 2
                                      Rent

     2.01 Rent. "Rent" shall consist of Fixed Rent and Additional Charges.

     2.02  Fixed  Rent.  (a) The  fixed  rent  ("Fixed  Rent")  shall  be at the
following  rates:  (i) in the case of the Block A Space,  $10,427,820 per annum,
payable by Tenant in 12 equal monthly  installments of $868,985 each, in advance
on the Block A Rent  Commencement  Date and on the  first  day of each  calendar
month thereafter,  (ii) in the case of the Block B Space,  $4,912,890 per annum,
payable by Tenant in 12 equal  monthly  installments  of  $409,407.50  each,  in
advance  on the  Block B Rent  Commencement  Date and on the  first  day of each
calendar month  thereafter,  (iii) in the case of the Block C Space,  $2,874,190
per annum,  payable by Tenant in 12 equal monthly  installments  of  $239,515.83
each, in advance on the Block C Rent  Commencement  Date and on the first day of
each calendar month thereafter, and (iv) in the case of the Concourse Space, (A)
for  the  period  commencing  on the  Concourse  Rent  Commencement  Date to and
including the day before the 5th anniversary of the Concourse Rent  Commencement
Date, $211,480 per annum,  payable by Tenant in 12 equal monthly installments of
$17,623.33  each,  (B) for the period  commencing on the 5th  anniversary of the
Concourse  Rent  Commencement  Date to and  including  the day  before  the 10th
anniversary of the Concourse Rent Commencement Date, $232,628 per annum, payable
by Tenant in 12 equal monthly  installments  of $19,385.67  each and (C) for the
period  commencing on the 10th  anniversary of the Concourse  Rent  Commencement
Date to and including the Expiration Date, $253,776 per annum, payable by Tenant
in 12 equal monthly installments of $21,148 each, in each case in advance on the
first day of each calendar  month during the applicable  period. 

     (b) Subject to Section 2.02(c):  (i) "Block A Rent Commencement Date" means
the 545th day after the Block A Relevant Date.  (ii) "Block B Rent  Commencement
Date" means the 365th day after the Block B Relevant  Date.  (iii) "Block C Rent
Commencement  Date"  means the 300th day after the Block C Relevant  Date.  (iv)
"Concourse  Rent  Commencement  Date"  means the  365th day after the  Concourse
Relevant  Date  (each of the Block A Rent  Commencement  Date,  the Block B Rent
Commencement  Date,  the Block C Rent  Commencement  Date and the Concourse Rent
Commencement Date is called a "Rent  Commencement  Date").

     (c)  Notwithstanding  Section  2.02(b),  the Rent  Commencement  Date  with
respect to any Block,  any portion of any Block or any other  space  included in
the  Premises,  as the case may be, shall be postponed by the number of days, if
any, of Landlord  Delay  applicable  to such space.  "Landlord  Delay" means any
delay  which  Tenant  may  encounter  in the  substantial  completion  of any of
Tenant's  initial  Alterations  in any space or in the initial  occupancy of any
space for the conduct of business in accordance  with this Lease, in either case
(i) to the  extent  caused  by any act or  (where  Landlord  has an  affirmative
obligation to act pursuant to the terms of this Lease) omission of Landlord, its
agents or contractors (including, without limitation, the failure by Landlord to
cure any violations  noted against the Building  (other than a violation that is
the  obligation of Tenant to remove),  to the extent such failure (A) delays the
substantial  completion  of  Tenant's  initial  Alterations  in any space or (B)
delays  Tenant's  initial  occupancy of any space for the conduct of business in
accordance  with this Lease for the purposes  shown on, or reasonably  inferable
from,  Tenant's then current plans and specifications for the space in question)
or (ii) to the extent caused by any Unforeseen Condition which arises during the
performance by Tenant of any item of Tenant's  Required Work;  provided,  in all
cases that no such delay  shall  constitute  a Landlord  Delay if Tenant,  using
reasonable prudence and diligence,  but without additional expense,  could avoid
such delay, and no such delay shall constitute a Landlord Delay to the extent it
occurs after Tenant has actual knowledge or should  reasonably have knowledge of
such delay and before Tenant notifies  Landlord of such Landlord Delay (it being
understood  that in all events such delay shall  constitute a Landlord  Delay to
the extent it occurs after Tenant notifies  Landlord of such Landlord Delay). If
Tenant notifies  Landlord of the occurrence of any Landlord Delay, upon Tenant's
request,  Landlord shall notify Tenant of Landlord's estimate of the duration of
such  Landlord  Delay.   Anything  contained  in  this  Lease  to  the  contrary
notwithstanding,  this Section  2.02(c) shall not apply to any delay by Landlord
in completing  (x) any item of Landlord's  Work which is a condition to delivery
of any space to Tenant or (y) the Lobby  Renovation  Work;  it being  understood
that  Tenant's  remedies  for any such delay are set forth in Sections  1.03 and
8.21, respectively.  Any dispute as to the existence or duration of any Landlord
Delay shall be determined by arbitration in accordance with Section 8.09.

     (d) If the Rent  Commencement Date with respect to any Block or other space
is not the first day of a month,  then Fixed Rent with  respect to such Block or
other space for the month in which such Rent  Commencement  Date occurs shall be
prorated  and paid on such Rent  Commencement  Date.





     (e) As reimbursement  for Tenant's  performance of Tenant's  Required Work,
Tenant  shall be entitled to a credit  against  the first  installments  of Rent
coming due under this Lease (i) with respect to the Block A Space, in the amount
of $1,009,918, (ii) with respect to the Block B Space, in the amount of $358,177
and (iii) with respect to the Block C Space, in the amount of $256,304. Anything
to the contrary  contained in this Lease  notwithstanding,  Tenant shall only be
entitled to receive such rent credits if and to the extent that Tenant  performs
Tenant's  Required Work.  Tenant's  entitlement to such rent credits shall be in
addition to (A) any reimbursement to which Tenant becomes  entitled,  or (B) any
expenses to be incurred by Landlord, by reason of Unforeseen Conditions pursuant
to Section 4.01(a)(vi).

     2.03 Additional Charges. "Additional Charges" means Tax Payments, Operating
Payments  and all other sums of money at any time  payable by Tenant  under this
Lease,  all of which  Additional  Charges  shall be deemed to be rent.

     2.04 Tax Payments. (a) "Base Tax Amount" means $17,683,400;  provided, that
if the Taxes, as finally  determined,  for the 1995/1996 Tax Year, the 1996/1997
Tax Year and/or the 1997/1998 Tax Year shall be greater than  $17,683,400,  then
the Base Tax Amount shall be increased to equal the greatest of such amounts. If
Landlord  shall at any  time,  as part of any  settlement,  compromise  or other
disposition,  settle,  compromise or otherwise  dispose of applications or other
proceedings  for the  reduction  of Taxes with respect to more than one Tax Year
(including, for purposes of this sentence only, any tax years occurring prior to
the Term),  which settlement,  compromise or disposition  includes the 1995/1996
Tax Year,  the 1996/1997 Tax Year and/or the 1997/1998 Tax Year (any of such Tax
Years is called a "Base Tax Year"),  Landlord shall not agree to any settlement,
compromise or other  disposition  that would result in the overall  reduction of
Taxes for the applicable Tax Years being  inequitably  allocated to any Base Tax
Year so as to reduce the Base Tax Amount by more than the Base Tax Amount  would
have been reduced if Landlord had compromised,  settled or otherwise disposed of
the Taxes for the Base Tax Year in question without reference to any compromise,
settlement or other disposition of Taxes for any other Tax Year. In the event of
a breach of the preceding  sentence by Landlord,  as Tenant's  sole remedy,  the
Taxes for the Base Tax Year in  question  shall be  modified to be the Taxes for
such Tax Year that would  have  applied  had  Landlord  complied  with the terms
hereof and  Landlord  shall  refund to Tenant the  amount,  if any,  overpaid by
Tenant in respect of any Tax Payment by reason of  Landlord's  failure to comply
with the terms of this Section 2.04(a), together with interest on such amount at
the Interest Rate from the date of the applicable  payment by Tenant through the
date of refund by Landlord. Any dispute concerning this Section 2.04(a) shall be
resolved by  arbitration  in  accordance  with Section  8.09.  

     (b) "Taxes" means amounts  actually  payable for (i) the real estate taxes,
vault taxes,  assessments and special  assessments  levied,  assessed or imposed
upon or with  respect to the Project by any federal,  state,  municipal or other
government or governmental body or authority  (provided,  that the same shall be
reflected  in a tax bill or other  notice of the  applicable  authority  (or, if
applicable,  of any Superior Lessor or Superior  Mortgagee to whom Landlord must
pay Taxes;  provided,  in such case,  that Landlord  shall provide to Tenant the
actual tax bill or other notice of the applicable  authority  promptly after the
same becomes  available)  rendered with respect to the Project (such tax bill or
other  notice  is  called  a "Tax  Bill"))  and  giving  effect  to any  and all
abatements,  refunds, reductions, credits and the like, and calculated as if the
Building and the Land were  Landlord's  sole assets;  (ii) all taxes assessed or
imposed with respect to the rentals  payable under this Lease other than general
income  and gross  receipts  taxes;  provided,  that any such tax shall  exclude
Commercial Rent or Occupancy Tax imposed pursuant to Title 11, Chapter 7, of the
New York City  Administrative Code so long as such tax is required to be paid by
tenants; and (iii) any expenses incurred by Landlord in contesting such taxes or
assessments  and/or the assessed  value of the Project,  which expenses shall be
allocated  to the Tax Year to which  such  expenses  relate.  If at any time the
method of taxation shall be altered so that in lieu of, or as a substitute  for,
the  whole  or any part of such  real  estate  taxes,  assessments  and  special
assessments  now  imposed on real  estate,  there  shall be levied,  assessed or
imposed  (x) a tax,  assessment,  levy,  imposition,  fee or  charge  wholly  or
partially as a capital levy or otherwise on the rents received therefrom, or (y)
any other such substitute tax, assessment, levy, imposition, fee or charge, then
all such taxes, assessments,  levies,  impositions,  fees or charges or the part
thereof so measured or based  shall be  included  in "Taxes".  If the owner,  or
lessee under a Superior  Lease,  of all or any part of the  Building  and/or the
Land is an entity exempt from the payment of taxes  described in clauses (i) and
(ii),  there shall be included in "Taxes" the taxes described in clauses (i) and
(ii) which would be so levied,  assessed or imposed if such owner or lessee were
not so exempt and such taxes  shall be deemed to have been paid by  Landlord  on
the dates on which such taxes otherwise would have been payable if such owner or
lessee were not so exempt, but only to the extent any such payments are actually
required to be made by Landlord.  "Taxes" shall not include (A) any  succession,
gains,  recording,  income,  franchise,  transfer,  inheritance,  capital stock,
excise,  excess  profits,  occupancy or rent  (except as  permitted  pursuant to
clause (ii) above), gift, estate, foreign ownership or control, payroll or stamp





tax of Landlord or any superior party,  (B) any other tax assessment,  charge or
levy on the rent  reserved  under this Lease  (except as  permitted  pursuant to
clause (ii) above),  (C) any charges and/or taxes of a type  customarily paid by
individual  tenants if and to the extent the same are  allocable to, and payable
by,  individual  tenants  (including,  by way of example only,  vault fees for a
tenant using such vaults,  and water and sewer taxes for a restaurant tenant) or
(D) any penalties or late charges imposed against Landlord or any superior party
with respect to real estate taxes,  assessments and the like; provided, that, to
the extent that such  penalties  or late  charges are  incurred by Landlord as a
result of a failure  by Tenant to pay any  installment  of any Tax  Payment in a
timely manner in accordance with Section  2.04(e),  Tenant shall pay to Landlord
the amount of such  penalties or late  charges for which  Tenant is  responsible
within 30 days after  demand  therefor  by  Landlord. 

     (c) "Tax Year" means each period of 12 months,  commencing on the first day
of July of each such period, in which occurs any part of the Term, or such other
period of 12 months occurring during the Term as hereafter may be adopted as the
fiscal year for real estate tax purposes of the City of New York. 

     (d)  "Tenant's Tax Share" means a fraction  expressed as a percentage,  the
numerator of which shall be the rentable  square  footage of the space from time
to time included in the Premises and the denominator of which shall be 1,930,773
(the "Tax Denominator"). Exhibit H attached hereto sets forth Tenant's Tax Share
for each full  floor of the  Office  Space and the Offer  Space.  Any  change in
Tenant's  Tax Share  shall be  effective  from and after  each  applicable  Rent
Commencement  Date (or other  date,  with  respect  to any space  other than the
Blocks and the  Concourse  Space,  on which  Tenant is required  pursuant to the
terms of this Lease to commence  making Tax Payments with respect to such space)
and Tenant's  Tax Payments for any Tax Year in which such a change  occurs shall
be adjusted accordingly.  Landlord represents to Tenant that the Tax Denominator
was determined  using the same standard of measurement as that used to determine
the rentable square footages set forth on Exhibit H annexed hereto.

     (e) If Taxes  for any Tax  Year,  including  the Tax Year in which the Rent
Commencement  Date with respect to any Block  occurs,  shall exceed the Base Tax
Amount,  Tenant shall pay to Landlord (each, a "Tax Payment") Tenant's Tax Share
of the  amount by which  Taxes for such Tax Year are  greater  than the Base Tax
Amount.  The  Tax  Payment  for  each  Tax  Year  shall  be due and  payable  in
installments in the same manner that Taxes for such Tax Year are due and payable
by Landlord, whether to the City of New York or to a Superior Lessor or Superior
Mortgagee.  Tenant shall pay Tenant's Tax Share of each such installment  within
30 days after the  rendering  of a  statement  therefor (a "Tax  Statement")  by
Landlord to Tenant, but in no event shall Tenant be required to pay Tenant's Tax
Share of any Taxes more than 10 days prior to the date such Taxes  first  become
due. The Tax Statement to be rendered by Landlord  shall set forth in reasonable
detail the  computation of Tenant's Tax Share of the  particular  installment(s)
being billed, and, if Landlord shall have received the relevant Tax Bill at such
time,  shall  accurately  reflect  such Tax Bill or, if Landlord  shall not have
received  such  Tax Bill at such  time,  shall  reflect  Landlord's  good  faith
estimate of such  installment(s)  being billed.  A copy of the relevant Tax Bill
shall  accompany  each Tax Statement  (if Landlord  shall have received such Tax
Bill at the time such Tax Statement is delivered to Tenant).  If Landlord  shall
not have  received  the  relevant  Tax Bill at the  time  any Tax  Statement  is
delivered to Tenant,  Landlord  shall deliver to Tenant,  promptly after receipt
thereof by Landlord,  a copy of such Tax Bill, together with a statement setting
forth the amount (if any) of any  overpayment  or  underpayment  by Tenant  with
respect to the Tax Payment paid by Tenant in accordance  with such Tax Statement
and the  appropriate  party  shall  pay to the other  party  the  amount of such
overpayment or  underpayment  within 30 days after such statement is received by
Tenant.  If there shall be any  increase in the Taxes for any Tax Year,  whether
during or after such Tax Year,  or if there  shall be any  decrease in the Taxes
for any Tax  Year,  the Tax  Payment  for such Tax Year  shall be  appropriately
adjusted and paid or refunded, as the case may be, in accordance herewith. In no
event,  however,  shall Taxes be reduced below the Base Tax Amount.  Anything to
the contrary contained in this Lease  notwithstanding,  in no event shall Tenant
be required to pay a Tax Payment for any period  prior to July 1, 1998.

     (f) If, in respect  of any Taxes for which  Tenant  has paid  Tenant's  Tax
Share, Landlord shall receive a refund of such Taxes or shall become entitled to
a credit against a future payment of Taxes,  Landlord shall (i) in the case of a
refund, pay to Tenant within 30 days after Landlord's receipt thereof or (ii) in
the case of a credit, permit Tenant to credit against the Tax Payment applicable
to the payment of Taxes  against which  Landlord  will take such credit  (unless
such  payment of Taxes is due and  payable  after the end of the Term,  in which
event Landlord shall pay to Tenant at the time Landlord makes such Tax Payment),
in any such case an amount  equal to Tenant's Tax Share of such refund or credit
(after  deducting  from such refund or credit the actual  costs and  expenses of
obtaining the same,  including,  without limitation,  appraisal,  accounting and
legal fees,  if and to the extent that (A) such legal fees have not already been
deducted by the party  conducting  the  contest on behalf of  Landlord  prior to
Landlord's  receipt  of such  refund and (B) such  costs and  expenses  were not





included in the Taxes for such Tax Year); provided,  that such payment to Tenant
shall in no event  exceed  Tenant's  Tax  Payment  paid for such Tax  Year.  The
reference to "Tenant's  Tax Share" in this  Section  2.04(f)  shall be deemed to
mean  Tenant's Tax Share in effect  during the Tax Year to which the  applicable
refund  relates;  provided,  that if Tenant's Tax Share changed  during such Tax
Year, any refund to which Tenant is entitled under this Section 2.04(f) shall be
appropriately  adjusted. 

     (g) If Landlord  is required to pay Taxes to a Superior  Lessor or Superior
Mortgagee  and as a result  Tenant is required to make Tax  Payments to Landlord
earlier than such Tax  Payments  would be required to be made if such Taxes were
payable by Landlord directly to the applicable  taxing authority,  then Landlord
shall pay to Tenant interest,  at an annual rate equal to the Prime Rate, on the
amount of such Tax  Payments  from the date  paid by Tenant  until the date (the
"Tax Payment Date") that is 10 days before the date that the Taxes in respect of
which such Tax Payments were made are due to the  applicable  taxing  authority,
such  interest to be paid within 30 days after Tenant gives to Landlord a notice
requesting  such payment but in no event earlier than the applicable Tax Payment
Date.  Anything contained in this Section 2.04 to the contrary  notwithstanding,
Landlord  may at any time and from  time to time  notify  Tenant  that  Landlord
waives the  requirement  that Tax  Payments  be made at the time the  applicable
Taxes are due to a Superior Lessor or Superior Mortgagee,  in which event Tenant
shall  make  each Tax  Payment  at the time  such  Tax  Payment  would be due to
Landlord if Landlord  were paying the Taxes in respect of which such Tax Payment
is made directly to the applicable taxing  authority,  and the first sentence of
this Section 2.04(g) shall not apply.

     2.05  Operating  Payments.  (a) "Base  Operating  Amount"  means  Operating
Expenses for the Base Operating  Year.

     (b) "Base Operating Year" means calendar year 1997.

     (c)  "Includable  Capital  Improvements"  means all  alterations,  repairs,
replacements,  improvements and other items the cost of which is incurred at any
time during or after the Base  Operating  Year and which (i) are required by any
Laws  enacted  after the date of this  Lease,  (ii) have the effect of  reducing
expenses  that  would  otherwise  be  included  in  Operating  Expenses,   (iii)
constitute a replacement which in Landlord's  reasonable  judgment is prudent to
make in lieu of  repairs to the  replaced  item(s)  or (iv) in  accordance  with
generally accepted  accounting  principles  consistently  applied ("GAAP"),  are
required to be capitalized  and to be amortized or depreciated  over a period of
not  more  than  10  years. 

     (d) "Landlord's  Statement"  means an instrument  substantially in the form
attached to this Lease as Exhibit I setting forth the Operating  Payment payable
by Tenant  for a  specified  Operating  Year,  certified  by  Landlord. 

     (e) (i) "Operating  Expenses" means all  commercially  reasonable  expenses
actually  paid or incurred by or on behalf of Landlord in respect of the repair,
replacement,  maintenance,  operation  and security of the  Project,  including,
without  limitation  (but without  duplication,  and other than as  specifically
qualified or excluded below), (A) salaries, wages, medical, surgical,  insurance
(including,  without limitation, group life and disability insurance), union and
general  welfare  benefits,  pension  payments,  severance  payments,  sick  day
payments  and  other  fringe   benefits  of  persons   engaged  in  the  repair,
replacement,   maintenance,  operation  and/or  security  of  the  Project,  but
excluding  personnel  above  the  grade of  building  manager  or  equally  held
positions,  and with  respect to persons who are so engaged  with respect to the
Building and properties  other than the Building,  such expenses to be allocated
on a pro rata basis;  (B) payroll  taxes,  worker's  compensation,  uniforms and
related  expenses  for  such  employees;  (C) the  cost  of  fuel,  gas,  steam,
electricity, heat, ventilation, air-conditioning and chilled or condenser water,
water, sewer and other utilities,  together with any taxes, surcharges and other
fees  payable to the  provider  of such  utilities  (the  amount  includable  in
Operating  Expenses for  electricity  consumed in the Building and includable in
Operating  Expenses  shall be the  amount  at which  Landlord  from time to time
purchases  electricity for the same period from the utility  company  (including
all demand charges,  consumption charges,  surcharges,  taxes, fuel adjustments,
taxes passed on to consumers by the public  utility,  and other sums required to
be paid to the public  utility  for such  electricity),  which  amount  shall be
determined  by dividing  the cost  charged  with respect to the Building by said
utility during each respective billing period by the number of KWHRs consumed by
the Building as set forth on the utility company  invoice for such period);  (D)
the cost of painting  and/or  decorating  all areas of the  Project,  excluding,
however,  any space  contained  therein  which is leased  to, or  available  for
leasing by, tenants; (E) the cost of casualty, liability, fidelity, rent and all
other insurance  regarding the Project;  (F) subject to the proviso set forth in
clause (J) below,  the cost of all supplies,  tools,  materials  and  equipment,
whether by purchase or rental,  used in the  repair,  replacement,  maintenance,
operation  and/or  security of the Project and any sales taxes thereon;  (G) the
rental value of Landlord's  Building  office;  provided,  that the same shall be




included in Operating Expenses only to the extent that the rentable area of such
office does not exceed the rentable  area of Landlord's  Building  office on the
date of this Lease; (H) the cost of cleaning,  janitorial and security services,
including,  without limitation, glass cleaning, snow and ice removal and garbage
and waste  collection  and  disposal;  (I) the cost of all interior and exterior
landscaping;  (J) the  cost of all  alterations,  repairs,  replacements  and/or
improvements  made at any time during or after the Base  Operating Year by or on
behalf  of  Landlord,   whether  structural  or  non  structural,   ordinary  or
extraordinary,  foreseen  or  unforeseen,  and  whether or not  required by this
Lease,  and all tools and equipment  related  thereto;  provided,  that if under
GAAP,  any of the  costs  referred  to in this  clause  (J) are  required  to be
capitalized,  then such costs shall not be included in Operating Expenses unless
incurred for (x) an  Includable  Capital  Improvement  of the type  described in
Sections  2.05(c)(i),  (ii) or (iv), in which event the cost  thereof,  together
with  interest  thereon  (at  either  (I) if  Landlord  shall not  finance  such
Includable Capital  Improvement,  the Prime Rate determined as of December 31 of
the Operating  Year in which such costs were incurred or (II) if Landlord  shall
finance  such  Includable  Capital  Improvement,  the actual  costs  incurred by
Landlord to finance such Includable Capital Improvement),  shall in each case be
amortized and included in Operating Expenses over the useful life of the item in
question,  as determined in  accordance  with GAAP or (y) an Includable  Capital
Improvement of the type described in Section 2.05(c)(iii),  in which case, there
shall be included in Operating  Expenses in the Operating Year in which Landlord
pays for such Includable Capital Improvement (and, if and to the extent that the
cost of such Includable Capital  Improvement,  together with interest thereon in
accordance with clause (I) above, shall not be fully recovered in such Operating
Year, such  subsequent  Operating Years until such cost (together with interest)
is fully  recovered),  an amount equal to the lesser of (1) the unrecovered cost
of such  Includable  Capital  Improvement  (together with interest if the entire
cost of such  Includable  Capital  Improvement  is not  fully  recovered  in the
Operating Year in which Landlord pays for such Includable  Capital  Improvement)
and (2) a reasonable  estimate of the expenses which would have been incurred by
Landlord during the Operating Year in question to perform repairs to the item in
question had such item not been replaced; provided, further, that in the case of
any  Includable   Capital   Improvements   of  the  type  described  in  Section
2.05(c)(ii),  in no  event  shall  Tenant  be  required  to pay  more in any one
Operating Year by reason of such Includable Capital Improvements (plus interest)
than Tenant would have had to pay during such Operating Year with respect to the
relevant  component of Operating  Expenses which has been reduced as a result of
such Includable Capital  Improvements;  (K) management fees;  provided,  that if
Landlord or an Affiliate of Landlord is the managing  agent of the Building then
the amount includable in Operating  Expenses in respect of the annual management
fee shall at all times,  regardless of the actual management fee paid, be 2 1/2%
of the aggregate  rents and additional  rents  (excluding any amounts payable by
tenants to  Landlord  for  electricity)  payable to  Landlord  by tenants of the
Building and (L) any assessments,  dues,  levies or charges paid to any business
improvement  district or similar organization or to any entity on behalf of such
an organization.  During calendar year 1997,  Landlord shall cause an electrical
consultant to perform a survey of the  electricity  consumed in the Building and
includable  in  Operating  Expenses,  which  survey  shall  reflect  the  actual
equipment  amperage  readings.  Upon request by Tenant,  Landlord  shall provide
Tenant with the results of such survey. Any dispute concerning such survey shall
be resolved in the same manner  provided for the  resolution  of disputes  under
Section 2.07(e). (ii) Notwithstanding  Section 2.05(e)(i),  "Operating Expenses"
shall not include the following:  (1) depreciation and amortization (except with
respect to Includable Capital Improvements); (2) principal and interest payments
and other costs incurred in connection  with any financing or refinancing of the
Project  or any  portion  thereof  (except if and to the  extent  includable  as
Includable Capital  Improvements);  (3) the cost of tenant improvements made for
tenant(s) of the Building and any "contribution" to such tenant(s) in connection
therewith;   (4)  brokerage  commissions,   advertising  expenses,   promotional
expenses,  architect's  fees and space  planners'  fees  incurred  in  procuring
tenants for the Building;  (5) the cost of any work or service performed for any
tenant of the Building (including Tenant), whether at the expense of Landlord or
such tenant, to the extent that such work or service is in excess of the work or
service  that  Landlord is required  to furnish  Tenant  under this Lease at the
expense of Landlord; (6) the cost of any electricity consumed in the Premises or
in any other areas of the Building  that are leased to, or available for leasing
by, tenants;  (7) Taxes and any amounts excluded from Taxes pursuant to the last
sentence of Section  2.04(b);  (8) legal,  bookkeeping  and accounting  fees and
expenses;  (9) any cost if and to the extent Landlord is reimbursed therefor out
of insurance proceeds or otherwise, including, without limitation, if and to the
extent  that any tenant of the  Building  is  required  pursuant to its lease or
other  agreement  with Landlord to reimburse  Landlord  therefor  (other than by
means of operating expense  reimbursement  provisions  contained in the lease or
other  agreement  of such  other  tenant);  (10)  all  costs of  alterations  or
improvements to the Premises or the premises of any other tenant,  except if and
to the extent that such  alterations or  improvements  are performed in order to
comply  with Laws,  in which  case such costs  shall be  included  in  Operating
Expenses (but only if such costs are not required to be capitalized under GAAP);
provided,  that if such  alterations or  improvements  are performed in order to




comply  with Laws  enacted  after  the date of this  Lease and the costs of such
alterations  or  improvements  are required to be capitalized  under GAAP,  such
costs  shall be included  in  Operating  Expenses  in  accordance  with  Section
2.05(e)(i)(J)(x);  (11) all expenses  which would not have been incurred but for
the negligence or willful misconduct of Landlord or Landlord's agents, servants,
employees,  contractors,  suppliers,  or the negligence or willful misconduct of
another  tenant;  (12) any bad debt loss, rent loss or reserves for bad debts or
rent loss;  (13) all costs  associated with the operation of the business of the
partnership  or  entity  which  constitutes  the  Landlord,   as  the  same  are
distinguished  from the costs of operation of the Building,  including,  without
limitation,  partnership  accounting and legal  matters,  costs of defending any
lawsuits  with any  mortgagee  and  costs of  selling,  syndicating,  financing,
mortgaging or hypothecating  any of Landlord's  interests in the Building;  (14)
all fines,  penalties and interest (other than interest  includable  pursuant to
Section 2.05(e)(i)(J)); (15) all amounts paid by Landlord under any ground lease
(other than amounts which  constitute a  reimbursement  to the ground lessor for
items which would have been included in Operating  Expenses  under this Lease if
the same were paid  directly by Landlord);  (16) any costs or expenses  incurred
principally  for the  benefit of the  retail  portions  of the ground  floor and
concourse  levels,  or any portion of any other floor in the Building devoted to
retail operation;  (17) all costs of capital  improvements and any other capital
costs other than as expressly provided in Section 2.05(e)(i)(J);  (18) all costs
arising  from the presence of asbestos,  PCB's or other  hazardous  materials or
substances in or about the Project  (exclusive of any such costs with respect to
hazardous  materials  or  substances  (other  than  asbestos  and PCB's) used in
compliance  with  applicable  Laws  in the  ordinary  course  of  operating  and
maintaining  the Project,  which costs may be included in  Operating  Expenses);
(19)  all  costs  incurred  by  Landlord  with  respect  to goods  and  services
(including utilities sold and supplied to tenants and occupants of the Building)
to the extent  that  Landlord  would be entitled  to  reimbursement  from Tenant
(other  than  pursuant  to this  Section  2.05)  for the cost of like  goods and
services furnished to Tenant pursuant to this Lease; (20) expenses in connection
with services or other benefits which are not made available to Tenant but which
are made  available  to another  tenant or  occupant of the  Building;  (21) all
amounts  (other  than any  management  fees which  shall be  governed by Section
2.05(e)(i)(K)  above) paid by Landlord to Affiliates of Landlord for services in
the  Building  to the extent  that the same  exceed  the costs of such  services
rendered by  unaffiliated  third parties on a  competitive  basis in first class
midtown  Manhattan  office  buildings;  (22) all  compensation  paid to  clerks,
attendants or other persons in commercial concessions operated by Landlord; (23)
all  costs   associated   with   Landlord's   political,   civic  or  charitable
contributions  (except  if and to the  extent  includable  pursuant  to  Section
2.05(e)(i)(L));  (24) all costs to acquire, install, maintain, insure, repair or
replace  sculpture,  paintings  or other  objects  of art,  other  than  holiday
decorations; (25) all costs of Landlord's general corporate overhead and general
and administrative expenses;  provided, that the same are customarily charged as
overhead by, and are not separately  reimbursed as operating expenses to, owners
of first class midtown Manhattan office buildings which are managed by the owner
or an Affiliate of the owner;  (26) all costs which would not have been incurred
by  Landlord  but for the  violation  by Landlord or any tenant of the terms and
conditions of any lease of space in the Building;  (27) any expenses for repairs
or  maintenance  if and to the extent the same are  covered  by  warranties  and
service  contracts  or would  have  been so  covered  had  Landlord  obtained  a
commercially reasonable warranty with respect to the item in question (if and to
the extent  Landlord was  required to obtain such  warranty in  accordance  with
Section 4.05(b) below);  (28) new categories of Operating  Expenses not included
in Landlord's  Statement in respect of the Base Operating Year;  provided,  that
the cost of any category of Operating  Expenses which was included in Landlord's
Statement in respect of the Base  Operating Year and which ceases to be provided
by Landlord at any time after the Base Operating Year shall be excluded from the
Base  Operating  Amount from and after the date that such  category of Operating
Expenses ceases to be provided by Landlord;  and provided further, that any such
new category of Operating  Expenses may be included in Operating  Expenses,  if,
from and after the Operating  Year in which such new category is first  included
in Operating  Expenses,  the Operating  Expenses for the Base Operating Year are
grossed up to include the amount of such new category of Operating Expenses that
would have been incurred in the Base Operating  Year had Landlord  provided such
service or incurred such expense in the Base  Operating  Year;  (29) the cost of
repairs or  replacements  incurred  by reason of fire or other  casualty  to the
extent such costs are  incurred  because of  Landlord's  failure to maintain the
insurance  required by Section  7.01(d) or because of  Landlord's  inability  to
collect insurance proceeds due to Landlord's  negligence or willful  misconduct;
(30) any costs which  duplicate costs for which Landlord is reimbursed by Tenant
under other  provisions  of this Lease;  (31) the cost of temporary  exhibitions
located at or within the Project  (other  than  holiday  decorations);  and (32)
costs and  expenses  for which owners of first class  midtown  Manhattan  office
buildings  which are managed by the owner or an Affiliate of the owner and which
manager  receives a management  fee comparable to the management fee included in
Operating  Expenses  pursuant  to Section  2.05(e)(i)(K)  above are  customarily
compensated as part of their management fee and are not separately reimbursed as
operating expenses.




     (f)  "Operating  Year" means each calendar year in which occurs any part of
the Term. 

     (g) "Tenant's Operating Share" means a fraction, expressed as a percentage,
the  numerator of which shall be the rentable  square  footage of the space from
time to time included in the  Premises,  and the  denominator  of which shall be
1,850,452 (the  "Operating  Denominator").  Exhibit H attached hereto sets forth
Tenant's  Operating  Share for each full floor of the Office Space and the Offer
Space. Any change in Tenant's  Operating Share shall be effective from and after
each applicable Rent Commencement Date (or other date, with respect to any space
other than the Blocks  and the  Concourse  Space,  on which  Tenant is  required
pursuant to the terms of this Lease to commence making  Operating  Payments with
respect to such space) and Tenant's Operating Payments for any Operating Year in
which such a change occurs shall be adjusted accordingly. Landlord represents to
Tenant that the Operating  Denominator was determined using the same standard of
measurement as that used to determine the rentable  square footages set forth on
Exhibit H annexed hereto. 

     (h) For each Operating Year, including the Operating Year in which the Rent
Commencement  Date with respect to any Block occurs,  Tenant shall pay (each, an
"Operating  Payment")  Tenant's Operating Share of the amount by which Operating
Expenses for such Operating Year exceed the Base Operating Amount.

     (i) If during any relevant  period,  including the Base Operating Year, (A)
any rentable space in the Building shall be unoccupied, and/or (B) the tenant or
occupant of any  rentable  space in the  Building  undertook  to perform work or
services  therein  in lieu of having  Landlord  perform  the same,  such work or
services are of the same type as Landlord is required to provide to Tenant under
this Lease and the cost thereof would have been included in Operating  Expenses,
then,  in any such  event,  the  Operating  Expenses  for such  period  shall be
increased  to reflect  the  additional  expenses  (exclusive  of any  additional
management  fee that  would  have  been  payable  by  reason  of such  increased
expenses) that would have been  incurred,  if any, if 100% of the rentable space
in the Building were  occupied by tenants  during such period or if Landlord had
performed  such work or services  with respect to 100% of the rentable  space in
the Building, as the case may be.

     (j)  Landlord  may  furnish to Tenant,  prior to the  commencement  of each
Operating Year, a statement  substantially in the form attached to this Lease as
Exhibit I setting forth Landlord's  reasonable estimate of the Operating Payment
for such Operating  Year. In estimating the Operating  Payment for any Operating
Year, the percentage increase in Operating Expenses for such Operating Year over
the Operating Expenses for the prior Operating Year shall not exceed the average
of the  percentage  increases  in  Operating  Expenses  from  Operating  Year to
Operating  Year  over  the  prior  3  Operating  Years;  provided,  that  if the
percentage  increase in any  component of Operating  Expenses for the  Operating
Year  in  question  is  reasonably  expected  to be  higher  than  such  average
percentage  increase  due to a  demonstrable  event  which  has  occurred  or is
reasonably likely to occur, then, for purposes of such estimate,  Landlord shall
have the right to increase such  component of Operating  Expenses by such higher
percentage  (in which event  Landlord's  statement  setting  forth such estimate
shall be accompanied by a detailed explanation of such higher increase).  Tenant
shall pay to Landlord on the first day of each month during such Operating Year,
an amount equal to 1/12th of Landlord's  estimate of the  Operating  Payment for
such  Operating  Year.  If Landlord  shall not furnish any such  estimate for an
Operating  Year or if Landlord  shall furnish any such estimate for an Operating
Year subsequent to the commencement thereof, then (A) until the first day of the
second month  following the month in which such estimate is furnished to Tenant,
Tenant  shall pay to Landlord on the first day of each month an amount  equal to
the monthly sum payable by Tenant to Landlord under this Section 2.05 in respect
of the last month of the preceding  Operating  Year;  (B) after such estimate is
furnished to Tenant,  Landlord shall notify Tenant whether the  installments  of
the Operating  Payment  previously  made for such Operating Year were greater or
less than the  installments  of the  Operating  Payment to be made in accordance
with  such  estimate,  and (x) if there is a  deficiency,  Tenant  shall pay the
amount  thereof  within 30 days  after  demand  therefor,  or (y) if there is an
overpayment,  Landlord shall within 30 days refund to Tenant the amount thereof;
and (C) on the first day of the second month  following  the month in which such
estimate is furnished to Tenant and monthly thereafter throughout such Operating
Year Tenant  shall pay to Landlord  an amount  equal to 1/12th of the  Operating
Payment shown on such  estimate.  Landlord may, not more often than twice during
each  Operating  Year,  furnish  to Tenant a  revised  statement  of  Landlord's
estimate of the Operating Payment for such Operating Year, and in such case, the
Operating Payment for such Operating Year shall be adjusted and paid or refunded
as the  case  may be,  substantially  in the  same  manner  as  provided  in the
preceding sentence; provided, that any such revised Landlord's estimate shall be
calculated in accordance with the limitation specified in the second sentence of
this  Section  2.05(j). 




     (k)  Landlord  shall  furnish  to Tenant a  Landlord's  Statement  for each
Operating  Year (and  shall  endeavor  to do so within 180 days after the end of
such Operating  Year). If Landlord's  Statement shall show that the sums paid by
Tenant,  if any, under Section 2.05(j) exceeded the Operating Payment to be paid
by Tenant for the  applicable  Operating  Year,  Landlord  shall  within 30 days
refund to Tenant the amount of such excess;  provided,  that if the sums paid by
Tenant under Section 2.05(j) exceeded the actual Operating  Payment by more than
2.5%, then such refund shall include interest thereon at the Prime Rate from the
date of the applicable  payment by Tenant through the date of refund by Landlord
and if it is finally  determined by arbitration in accordance  with Section 8.09
that Landlord  shall have so overcharged  Tenant in bad faith,  then such refund
shall  include  interest  thereon at the Interest  Rate (instead of at the Prime
Rate) from the date of the  applicable  payments  by Tenant  through the date of
refund by Landlord;  and if the Landlord's Statement shall show that the sums so
paid by Tenant  were less than the  Operating  Payment  to be paid by Tenant for
such Operating Year,  Tenant shall pay the amount of such  deficiency  within 30
days after  demand  therefor;  provided,  that if the sums paid by Tenant  under
Section  2.05(j)  were less than the actual  Operating  Payment by reason of the
limitation  specified  in the  second  sentence  of Section  2.05(j),  then such
payment by Tenant to Landlord shall include  interest  thereon at the Prime Rate
from  the  date  such  payments  by  Tenant  would  have  been  due but for said
limitation  through  the date of  payment  by Tenant  pursuant  to this  Section
2.05(k). 

     (l) (i) Provided  that  Landlord's  Statement  with respect to a particular
Operating  Year shall not have become  conclusive  and binding  under the second
sentence of Section 2.05(l)(ii),  Tenant, upon notice given at any time within 4
years after Landlord furnishes to Tenant a Landlord's  Statement with respect to
any Operating  Year (but subject to Section  8.04(a)  below),  may elect to have
Tenant's  designated (in such notice) certified public accountant (who may be an
employee of Tenant) or other representative examine such of Landlord's books and
records  (collectively  "Records") as are relevant to such Landlord's Statement.
If Tenant  shall not give such  notice  within  such  4-year  period,  then such
Landlord's  Statement  shall be  conclusive  and binding upon Tenant.  If, under
Section  8.04(a) below,  Tenant's right to claim a refund of Operating  Expenses
under  this  Section  2.05  shall  have been cut off with  respect to any period
without Tenant having asserted a claim to a refund for such period,  then Tenant
shall no longer have the right to examine the Records for such period. "Records"
shall  include,  without  limitation,  sales tax reports and sales tax  returns,
receipts,  bank and check  books  and  records  supporting  data  maintained  by
Landlord and related to Operating  Expenses.  Subject to the other provisions of
this Section 2.05(l)(i),  Tenant's accountant or other  representative  shall be
permitted  to  examine  the  Records  at the office of  Landlord  or  Landlord's
managing  agent in Manhattan at such time or times during normal  business hours
as Landlord  shall  reasonably  designate  and Tenant shall be entitled,  at its
expense,  to  make  copies  of  any  Records.  Tenant  and  Tenant's  employees,
accountants  and agents  shall  treat all  Records as  confidential,  and,  upon
request by Landlord,  shall confirm such confidentiality  obligation in writing.
In no event shall the preceding  sentence be deemed to limit Tenant's  rights of
discovery and disclosure in any action or  proceeding,  or be construed so as to
prohibit  Tenant from  complying  with the directive of any court or arbitrator.
(ii)  Tenant,  within  180 days  after  the date on which the  Records  are made
available  to Tenant in  response  to a request  by Tenant  pursuant  to Section
2.05(l)(i)  above,  may send a notice  ("Tenant's  Statement")  to Landlord that
Tenant  disagrees  with  the  applicable  Landlord's  Statement,  specifying  in
reasonable  detail  the basis for  Tenant's  disagreement  and the amount of the
Operating  Payment  Tenant  claims is due. If Tenant  fails  timely to deliver a
Tenant's  Statement,  then such  Landlord's  Statement  shall be conclusive  and
binding  on  Tenant.   Landlord  and  Tenant   shall   attempt  to  adjust  such
disagreement. If they fail to resolve such disagreement within 90 days after the
date that Tenant gives Tenant's Statement to Landlord, either Landlord or Tenant
may  notify  the  other  that  such  party  desires  to have  such  disagreement
determined by arbitration in accordance with Section 8.09. Pending resolution of
such  disagreement,  (A)  Tenant  shall  pay the  undisputed  portion(s)  of the
Operating Payment in accordance with the Landlord's Statement in question (i.e.,
Tenant shall pay all undisputed  components  included in such Operating  Payment
and, if Tenant shall be disputing the amount of any  component  included in such
Operating Payment (as opposed to the component itself), the undisputed amount of
such component),  and (B) Tenant shall not be deemed to be in default under this
Lease for  withholding  payment of the disputed  portion(s).  If the  arbitrator
shall determine that any disputed portion of such Operating Payment was required
to be paid by Tenant,  Tenant shall pay to Landlord  within,  30 days after such
determination, such disputed amount, together with interest thereon at the Prime
Rate from the date the  applicable  payments  were required to be made by Tenant
pursuant to the  provisions  of this Section 2.05 through the date of payment by
Tenant pursuant to this Section  2.05(l)(ii);  provided,  that if the arbitrator
shall  determine that Tenant  disputed any portion of such Operating  Payment in




bad faith,  then such payment by Tenant shall  include  interest  thereon at the
Interest Rate  (instead of at the Prime Rate).  (iii)  Landlord,  for at least 4
years after Landlord furnishes to Tenant a Landlord's  Statement with respect to
any  Operating  Year,  shall  retain  Records  relating to payment of  Operating
Expenses  for such  Operating  Year.  Subject  to the other  provisions  of this
Section 2.05(l),  Tenant's  payment of any Operating  Payment shall not preclude
Tenant from later disputing the correctness of any Landlord's Statement.

     2.06 Tax and Operating Provisions.  (a) Subject to Section 10.05(b), in any
case  provided in Section  2.04 or 2.05 in which Tenant is entitled to a refund,
Landlord may, in lieu of making such refund,  credit against future installments
of Rent any amounts to which Tenant shall be entitled. Nothing in this Article 2
shall be  construed  so as to result in a decrease  in the Fixed  Rent.  If this
Lease shall expire  before any such credit shall have been fully  applied,  then
Landlord  shall within 30 days  thereafter,  but subject to Landlord's  right to
offset any amounts then due and payable by Tenant to Landlord in accordance with
Section  10.05(a),  refund to Tenant the unapplied  balance of such credit. 

     (b)  Landlord's  failure  to  render  or delay in  rendering  a  Landlord's
Statement  with respect to any Operating  Year or any component of the Operating
Payment shall not prejudice  Landlord's right to thereafter  render a Landlord's
Statement  with respect to any such Operating  Year or any such  component,  nor
shall the rendering of a Landlord's  Statement for any Operating  Year prejudice
Landlord's right to thereafter render a corrected  Landlord's Statement for such
Operating  Year.  Landlord's  failure  to  render  or delay in  rendering  a Tax
Statement  with  respect to any Tax  Payment or  installment  thereof  shall not
prejudice  Landlord's right to thereafter  render such Tax Statement,  nor shall
the  rendering of a Tax  Statement  for any Tax Payment or  installment  thereof
prejudice  Landlord's  right to  thereafter  render a  corrected  Tax  Statement
therefor.  Notwithstanding the foregoing, (i) if Landlord shall fail to render a
Landlord's Statement with respect to any Operating Year, or a Tax Statement with
respect to any Tax Year,  within 1 year after the end of such  Operating Year or
Tax Year,  then  Landlord  shall be deemed to have  waived its right to claim or
receive any additional  Operating Payment for such Operating Year or Tax Payment
for such Tax Year, as the case may be and (ii)  Landlord  shall have no right to
render a corrected  Landlord's  Statement for any Operating  Year or a corrected
Tax Statement for any Tax Year more than 4 years after the end of the applicable
Operating Year or Tax Year (or, if later in the case of Tax Statements,  4 years
after the last date on which costs  applicable  to the Tax Year in question were
incurred).  If, under Section 8.04(a) below, Tenant's right to claim a refund of
Operating  Expenses  under  Section 2.05 shall have been cut off with respect to
any period without  Tenant having  asserted a claim to a refund for such period,
then Landlord's right to render a corrected Landlord's statement with respect to
such period under the  preceding  sentence  shall be cut off as of the same date
that Tenant's  right was so cut off. 

     (c) The  computations  under this Article 2 are intended to  constitute  an
actual reimbursement to Landlord for Taxes and other costs and expenses incurred
by  Landlord  with  respect  to the  Project  as to which  Tenant  has agreed to
reimburse  Landlord under this Lease. If the Building shall be  condominiumized,
then  Tenant's  Operating  Payments and Tax Payments  shall,  if  necessary,  be
equitably  adjusted such that Tenant shall  thereafter  continue to pay its fair
share of the Taxes and  Operating  Expenses  of the  Building  taken as a whole;
provided  that Tenant  shall not be required to pay an amount  greater  than the
amount  Tenant  would  have  been  required  to pay had the  Building  not  been
condominiumized,  unless the  Building  shall have been  condominiumized  at the
request  of Tenant,  in which  case  Tenant  shall be  responsible  for any such
increased  amounts. 

     (d) Each Tax Payment in respect of a Tax Year, and each  Operating  Payment
in respect of an Operating  Year,  which  begins prior to the Rent  Commencement
Date  with  respect  to any  Block  or ends  after  the  expiration  or  earlier
termination of this Lease, and any tax refund pursuant to Section 2.04(f), shall
be prorated to  correspond  to that portion of such Tax Year or  Operating  Year
occurring within the Term.

     2.07  Electric  Charges.  (a)  Tenant's  demand for,  and  consumption  of,
electricity in the Office Space shall be determined by meter or meters installed
(or, if existing, retrofitted) by Landlord to the extent Landlord is required to
install same as part of  Landlord's  Work,  and  otherwise  by Tenant.  Any such
meters so installed by Landlord  shall  measure  only  Tenant's  demand for, and
consumption  of,  electricity and neither any electricity of any other tenant in
the  Building  nor any  electricity  used in the common  areas of the  Building.
Tenant shall pay for electric  consumption  within 15 days after  rendition of a
bill  therefor (but in no event more than 5 days before  Landlord's  payment for
the applicable  period is due to the public  utility),  which bill shall reflect
the aggregate  charge for electricity  for the Premises,  as determined by or on
behalf of Landlord  separately  for each meter.  Within 60 days after request by
Tenant,  Landlord  shall install,  at Tenant's  reasonable  expense,  a meter to
measure  Tenant's demand for, and  consumption of,  electricity in the Concourse
Space. 





     (b) The  amount  payable  by Tenant  for  electricity  consumed  within the
Premises,  whether determined by meters or as otherwise provided below, shall be
the amount (as adjusted from time to time,  "Landlord's Rate") at which Landlord
from time to time  purchases  electricity  for the same  period from the utility
company (including all demand charges, consumption charges,  surcharges,  taxes,
fuel adjustments,  taxes passed on to consumers by the public utility, and other
sums required to be paid to the public utility for such electricity). Landlord's
Rate shall be  determined  by  dividing  the cost  charged  with  respect to the
Building by said utility during each respective  billing period by the number of
KWHRs consumed by the Building as set forth on the utility  company  invoice for
such period.  

     (c) (i) If, prior to the  installation of a separate meter,  any portion of
Tenant's  electric  consumption  is measured on a meter that also  measures  the
electric consumption of another tenant in the Building,  (ii) if Tenant occupies
any portion of the Office Space prior to the installation of meters with respect
thereto,  (iii) at all times in the case of the Concourse  Space (unless a meter
is installed to measure Tenant's consumption  therein),  and/or (iv) in the case
of any Offer Space which  constitutes less than 67% of the total rentable square
footage of the floor on which such Offer  Space is located  and with  respect to
which there is no meter  installed  to measure the  consumption  of  electricity
therein (it being agreed that Tenant shall have the right,  at Tenant's  expense
and in accordance with Section 4.02, to install a meter), then in each such case
Tenant's  consumption of electricity shall be reasonably  estimated by Landlord,
and  Tenant  shall pay  Landlord's  Rate as  applied  to such  consumption  (the
"Initial Charge");  provided,  that in no event shall Tenant pay less than $2.00
per annum per  rentable  square foot of the Office Space and $1.00 per annum per
rentable  square foot of the Concourse  Space (which amounts shall be reduced to
$.75 per  annum  per  rentable  square  foot  with  respect  to any space in the
Premises during the period of Tenant's  construction  of initial  Alterations to
such space),  unless a survey  conducted  in  accordance  with  Section  2.07(e)
indicates  that the foregoing  rates (other than the $.75 per annum per rentable
square foot charge applicable to Tenant's initial construction periods; it being
understood that such rate shall not be subject to increase or decrease, pursuant
to survey or otherwise)  should be lower. The Initial Charge may only be changed
from time to time in accordance with Sections 2.07(d) and (e) below (the Initial
Charge,  as so modified from time to time, is called the "Actual  Charge").

     (d) The Actual  Charge may be  adjusted  by  Landlord  from time to time to
accurately  reflect a change (if any) in Landlord's  Rate, any such change to be
retroactive  to the date of the change in  Landlord's  Rate.

     (e) If at any time Landlord or Tenant  believes that the Actual Charge does
not accurately  reflect  Tenant's demand for, and  consumption of,  electricity,
then such party may give a notice (the "Survey  Notice") to the other requesting
that the Actual Charge be  determined by survey in accordance  with this Section
2.07(e). If either party gives a Survey Notice, then the parties shall select an
independent electrical consultant reasonably satisfactory to Landlord and Tenant
who shall survey the demand for, and consumption of,  electricity by Tenant and,
if  applicable,  each other tenant who shares a submeter  with  Tenant,  and the
Actual  Charge shall be calculated  by applying  Landlord's  Rate to such demand
for,  and  consumption   of,   electricity  as  determined  by  such  electrical
consultant.  Any  such  survey  shall  reflect  the  actual  equipment  amperage
readings.  The  determination  by such electrical  consultant shall be final and
binding on  Landlord  and Tenant.  If the  parties  shall be unable to select an
electrical consultant  reasonably  satisfactory to Landlord and Tenant within 30
days after the giving of the Survey  Notice,  then  either  party shall have the
right  to  request  the  American  Arbitration  Association  (or  any  successor
organization  thereto)  (the  "AAA")  to  designate  an  independent  electrical
consultant  to conduct  such  survey and the  determination  of such  electrical
consultant  shall be final and binding on Landlord  and Tenant.  The fees of any
electrical  consultant selected pursuant to this Section 2.07(e) shall be shared
equally by Landlord and Tenant.  If  applicable,  any  adjustment  to the Actual
Charge  shall be  retroactive  to the date of any  relevant  change in  Tenant's
consumption   as  determined   by  the   electrical   consultant.   Pending  the
determination  of such electrical  consultant,  Tenant shall continue to pay the
Actual  Charge  then  being  charged by  Landlord,  and within 30 days after the
determination  by such electrical  consultant,  Landlord or Tenant shall make an
appropriate refund or payment, which refund or payment shall include interest at
the Prime Rate from the date of the applicable  payments by Tenant in respect of
electricity  through  the date of such  refund or  payment.  Surveys of Tenant's
electrical  consumption  shall  be  based  upon  the use of  electricity  during
Business  Hours  on  Business  Days,  and on such  other  days  and  hours  when
electricity  is used in the Premises;  and if cleaning  services are provided by
Landlord,  such survey shall include Landlord's normal cleaning hours of 5 hours
per day for lighting within the Premises and for electrical  equipment  normally
used for such cleaning. No party may give a Survey Notice more than two times in
any 12 month period.




     (f) At Tenant's option,  Landlord shall furnish and install all replacement
lighting,  tubes, lamps, bulbs and ballasts required in the Premises, and Tenant
shall pay to Landlord or its designated contractor, within 30 days after receipt
of an itemized bill, the actual cost incurred by Landlord  therefor. 

     (g)  Tenant  shall be  entitled  to the  benefit  of any  payment or credit
received  by  Landlord  from the public  utility  supplying  electricity  to the
Building by reason of energy saving devices installed by Tenant in the Premises.
Any  application  for such benefits or for any similar  benefit program shall be
made by Tenant;  provided,  that at Tenant's request and at Tenant's expense (if
and to the extent Landlord incurs any out-of-pocket expenses therefor), Landlord
shall sign any application required for Tenant to obtain such benefits and shall
otherwise reasonably cooperate with Tenant's efforts to obtain such benefits.

     2.08 Manner of Payment.  Tenant shall pay all Rent as the same shall become
due and payable under this Lease (a) in the case of Fixed Rent, by wire transfer
of immediately  available  federal funds as directed by Landlord,  in accordance
with wiring  instructions  given by  Landlord at least 30 days in advance,  such
instructions  not to be changed by Landlord more than twice per year, and (b) in
the case of all other sums,  at Tenant's  election,  either by wire  transfer as
aforesaid or by check (subject to collection) drawn on a New York Clearing House
Association  member bank, in each case at the times provided  herein and, except
as  otherwise  provided  in this  Lease,  without  notice or demand and  without
setoff,  credit,  counterclaim  or abatement  except such set-offs,  credits and
abatements to which Tenant may be entitled pursuant to the express provisions of
this  Lease.  All Rent  shall be paid in lawful  money of the  United  States to
Landlord  at its  office or such  other  place  (which  shall be  located in the
continental  United  States if Tenant is paying Rent by check) as  Landlord  may
from time to time  designate.  If Tenant  fails  timely to pay any Rent,  Tenant
shall pay  interest  thereon from the date when such Rent became due to the date
of Landlord's receipt thereof at the Interest Rate; provided,  that Tenant shall
not be required to pay such  interest on any late Rent  payment if both (i) such
late Rent payment is paid within 7 Business Days after the  applicable  due date
and (ii)  including  such late Rent payment,  Tenant shall have failed timely to
make Rent payments no more than twice in any 12-month period and no more than 10
times in the aggregate during the Term. Any Additional  Charges for which no due
date is  specified  in this Lease,  or which this Lease  describes  as being due
"upon  demand" (or like  words),  shall be due and payable on the 30th day after
the date of invoice.




                                    ARTICLE 3
                               Landlord Covenants

     3.01  Office  Space  Services . From and after the date that  Tenant  first
occupies the Office Space for the performance of Tenant's  initial  improvements
(or, in the case of cleaning and passenger  elevator service (except as provided
in Section 4.01(a)(v)),  for the conduct of Tenant's business),  Landlord shall,
at Landlord's  expense  (except as otherwise  expressly  provided and subject to
reimbursement  as part of Operating  Expenses to the extent properly  includable
therein),  furnish  Tenant  with the  following  services  to the  Office  Space
(collectively,  "Landlord Services"): 

     (a)  heat,  ventilation  and  air-conditioning  during  Business  Hours  on
Business Days  substantially  in accordance with the design  specifications  set
forth in  Exhibit G attached  hereto;  if Tenant  shall  request  that  Landlord
provide heat,  ventilation or air  conditioning  services through the Building's
systems at any other times,  Landlord shall furnish such service (i) in the case
of a Business  Day,  upon  receiving  notice  from  Tenant by 3:00 p.m.  of such
Business Day, or (ii) in the case of a non-Business  Day, upon receiving  notice
from Tenant by 3:00 p.m. of the immediately  preceding  Business Day, and Tenant
shall pay to Landlord upon demand the charge  therefor  calculated in accordance
with the formula set forth on Exhibit X attached hereto (which calculation shall
be initially made upon Landlord's  completion of the work being performed to the
VAV system as part of Landlord's Work and  recalculated  thereafter on an annual
basis to  reflect  changes  in the costs for the  utilities  applicable  to such
calculation);  provided,  that  Tenant  shall be  entitled  to  receive,  in the
aggregate,  up to  100  hours  of  such  after-hours  heat,  ventilation  or air
conditioning  services,  without charge,  during Tenant's  initial move into the
Building  (such  after-hours  services  to be so  provided  without  charge with
respect to the Block or Blocks into which Tenant is then moving). Landlord shall
provide at the Building an operating engineer to manage the Building's  heating,
ventilating  and air  conditioning  systems on a 24 hour per day, 7 day per week
basis. As part of Tenant's initial Alterations to the Blocks,  Tenant shall have
the right in  connection  with the  installation  of Tenant's  supplemental  air
conditioning  system  (A) to tap  into the  Building's  compressed  air  system;
provided,  that in no event shall the draw from the Building's air supply exceed
2 SCFM and (B) to install,  subject to and in accordance  with the provisions of
Section 8.19(b) below, an independent  air-cooled  chilled water system and/or a
cooling  tower on the 17th floor  set-back in a location  selected by Tenant and
mutually  agreeable to Landlord and Tenant;  provided,  (x) that the location of
any such cooling tower shall be subject to Landlord's  reasonable approval as to
line of sight  and (y)  Tenant  shall  install  upon any  such  cooling  tower a
cosmetic  enclosure  reasonably  approved by  Landlord.  Upon request by Tenant,
Landlord shall make the operating  engineering  staff that services the Building
equipment  available to service any such system in a timely manner (including in
case of an  emergency)  and Tenant shall pay to  Landlord,  within 30 days after
demand,  Landlord's  reasonable  charges for such  services.  If Tenant does not
install  such  independent  system,  Landlord  shall  provide  up to 200 tons of
condenser water to the Office Space on a year-round basis through the Building's
condenser water system.  Whether or not Tenant installs such independent system,
Landlord shall provide up to 20 tons of condenser water for each additional full
floor of Offer Space included in the Premises from time to time (such 20 tons to
be  appropriately  pro  rated in the case of any  partial  floor of Offer  Space
included in the Premises).  Tenant shall have the right,  without charge, to tap
into the  Building's  condenser  water  system on any one or more  floors of the
Premises in order to allow Tenant to receive  such  condenser  water  service in
such  amounts per floor as Tenant may elect  (subject to the  aggregate  maximum
amount  set forth  above)  and to  receive  the  condenser  water  service to be
provided by Landlord to the Primary  Concourse  Space in accordance with Section
3.02.  Tenant shall pay to  Landlord,  within 30 days after  demand,  Landlord's
reasonable  estimate  of the actual  cost  (excluding  any  depreciation  of the
Building's  condenser water system) of providing such condenser water (which, as
of the date of this Lease, is $.03 per ton hour).  Such condenser water shall be
provided in accordance with the specifications attached to this Lease as Exhibit
P. Landlord  shall retain a condenser  water  specialist  throughout the Term to
ensure that the Building's  condenser  water system is maintained in a condition
so that the same is capable of meeting such  specifications.  Wet connections to
the  Building's  condenser  water system are not  permitted.  Upon 45 days prior
notice,  Landlord shall perform any draindowns and refills required for Tenant's
connection  to  the  Building's   condenser  water  system  (including  Tenant's
connection  thereto for purposes of receiving the condenser  water service to be
provided by Landlord to the Primary  Concourse  Space in accordance with Section
3.02) without charge to Tenant  (subject to  reimbursement  as part of Operating
Expenses to the extent properly includable  therein); 





     (b) steam,  if required by Tenant for any  additional  heating or permitted
kitchen use, in which event  Tenant shall pay to Landlord,  within 30 days after
demand,  Landlord's  reasonable  estimate  of the  actual  cost  (excluding  any
depreciation  of the Building's  piping and other equipment used to supply steam
to the Office  Space) of  providing  such  steam;  Tenant  shall have the right,
without  charge,  to tap into the valved  outlet to be  installed by Landlord in
accordance  with  Paragraph 19 of Exhibit F annexed  hereto;  if Tenant uses the
Building's   steam,   Tenant  shall  install  in  accordance   with   Landlord's
specifications,  and Landlord shall maintain,  at Tenant's  reasonable  expense,
meters to measure Tenant's consumption of steam;

     (c) (i) (A) provided this Lease has not  terminated as to any of the Office
Space  included  in the Block A Space,  the Block B Space and the Block C Space,
exclusive use of 4 passenger  elevators in the elevator bank serving floors 7-15
(provided,  that until the tenant that occupies the Block B Space on the date of
this Lease  vacates  the same,  Tenant  shall have the  exclusive  use of only 2
passenger  elevators in such elevator bank), and (B) provided this Lease has not
terminated as to any of the Office Space in the Block A Space,  exclusive use of
all passenger  elevators in the elevator bank serving floors 15-22, in each case
to provide  passenger  elevator  service to the applicable  floors of the Office
Space at all times during  Business  Hours on Business  Days,  with at least one
passenger  elevator in the elevator  bank serving  floors 7-15 and one passenger
elevator in the elevator bank serving  floors 15-22 subject to call at all other
times and (ii)  freight  elevator  service to the Office Space 24 hours per day,
365  days per  year,  on a first  come-first  served  basis  (i.e.,  no  advance
scheduling)  during  Business Hours on Business Days, and on a reserved basis at
all other times,  and Tenant shall reimburse  Landlord for the reasonable  costs
therefor; provided, that Tenant shall be entitled to receive up to the following
number of man-hours of such overtime  freight  elevator  usage,  without charge,
during Tenant's initial move into the Blocks (as distinguished from usage during
Tenant's  construction  of its initial  Alterations,  which is  provided  for in
Section  4.01(a)(iv)  below):  up to 335 man-hours  during Tenant's initial move
into the Block A Space; up to 158 man-hours  during  Tenant's  initial move into
the Block B Space and up to 92 man-hours  during Tenant's  initial move into the
Block C Space;  except  as set  forth  in  Section  4.01(a)(iv),  the use of all
freight elevators shall be on a nonexclusive basis; upon completion of the Lobby
Renovation  Work, such passenger  elevators  serving the Office Space shall meet
the  specifications  attached  to this  Lease as  Exhibit R; if at any time this
Lease shall have been  terminated as to any of the Office Space  included in the
Block A Space,  the  Block B Space  and the  Block C Space,  then  Tenant  shall
continue to receive passenger  elevator service  commensurate with the amount of
space then Leased by Tenant in the applicable bank; Landlord shall reprogram (x)
the other 4 passenger  elevators  not serving the Office  Space in the  elevator
bank  serving  floors  7-15 so that  such  elevators  do not stop on any  floors
included in the Premises and (y) all  passenger  elevators in the elevator  bank
serving  floors  22-29 so that  such  elevators  do not stop on the 22nd  floor;
Tenant shall have the right to use the  passenger  elevators  serving the Office
Space in connection  with Tenant's  move into the Office Space;  provided,  that
Tenant shall comply with such  reasonable  rules and regulations as Landlord may
prescribe for such use  (including,  without  limitation,  reasonable  rules and
regulations  requiring Tenant to protect the elevators and the Building lobby to
prevent  damage  thereto);  if the tenant that occupies the Block B Space on the
date of this Lease  holds over in the Block B Space  after the date that  Tenant
first  occupies  any portion of the Office  Space in the  elevator  bank serving
floors 7-15 for the conduct of business,  Landlord  and Tenant shall  reasonably
cooperate  with each other with  respect to the  security of Tenant's  passenger
elevators in such elevator bank;

     (d) reasonable  quantities of hot and cold water to the floors on which the
Office Space is located for core lavatory, pantry and cleaning purposes only and
cold  water to the  floors on which the  Office  Space is  located  for  private
showers and lavatories and water cooler  purposes only; if Tenant requires water
for any other  purpose,  Landlord  shall furnish cold water at the Building core
riser  through  a capped  outlet  located  on the floor on which  such  water is
required  (within the core of the Building);  Tenant shall install in accordance
with  Landlord's  specifications,  and  Landlord  shall  maintain,  at  Tenant's
reasonable expense,  meters to measure Tenant's consumption of cold water and/or
hot water for such other purposes in which event Tenant shall reimburse Landlord
for the  quantities of cold water and hot water shown on such meters  (including
the  reasonable  cost incurred by Landlord for the production of such hot water,
if  produced by  Landlord),  within 30 days after  receipt of an  itemized  bill
therefor; 

     (e) electric energy in accordance with the specifications  attached to this
Lease as Exhibit J; Tenant  shall have the right to  redistribute  the  electric
energy provided to Tenant in accordance with Exhibit J between the floors of the
Premises;  provided,  that  Tenant,  at  its  expense,  performs  such  work  in
compliance  with the  provisions  of Section  4.02 and all  applicable  Laws and
installs any additional meters necessary to measure such redistributed  electric
energy;  if  Tenant  demonstrates  the need for  additional  electric  power for




Tenant's use and occupancy of the Office Space as general and executive  offices
(without limiting the foregoing,  specifically excluding any such need by reason
of trading floors or large  computer  rooms),  upon request by Tenant,  Landlord
shall make available to Tenant additional  electric energy sufficient to provide
Tenant with up to 8 watts demand load per rentable  square foot per floor of the
Office Space  (inclusive of the electric  power already being made  available to
Tenant as provided in Exhibit J of this Lease,  other than the electricity being
provided by the express  riser to be  installed by Landlord in  accordance  with
paragraph  27 of Exhibit F);  except as set forth  above,  Tenant  shall have no
right to any unallocated power available in the Building;

     (f)  subject to Section  3.04(e),  cleaning  services  in  accordance  with
Exhibit E attached  hereto.  Tenant shall pay to Landlord,  within 30 days after
receipt of an itemized bill therefor,  the reasonable costs incurred by Landlord
for (i) extra cleaning work in the Office Space  required  because of (A) misuse
on the part of Tenant, its subtenants or their respective  employees or visitors
and/or (B) interior  glass  partitions or an unusual  quantity of interior glass
surfaces  and (ii)  removal from the Office Space and the Building of any refuse
of Tenant  (A) in excess  of that  ordinarily  accumulated  in  business  office
occupancy, including, without limitation, kitchen refuse, or (B) if requested by
Tenant or if required by reason of the acts or (where Tenant has an  affirmative
obligation to act pursuant to the terms of this Lease) omissions of Tenant,  its
agents,  employees  or  contractors,  at times  other than  Landlord's  standard
cleaning  times  (i.e.,  at times other than  between  5:00 p.m. and midnight on
Business Days). Notwithstanding the foregoing, Landlord shall not be required to
clean  any  portions  of the  Office  Space  used for  preparation,  serving  or
consumption of food or beverages, training rooms, data processing or reproducing
operations,  private  lavatories or toilets or other special purposes  requiring
greater or more  difficult  cleaning  work than  office  areas and Tenant  shall
retain  Landlord's  cleaning  contractor  or  any  other  contractor  reasonably
acceptable  to Landlord  (which will utilize the same union local as  Landlord's
cleaning  contractor) to perform such cleaning at Tenant's  expense.  Landlord's
cleaning  contractor  shall have access to the Office  Space after 6:00 p.m. and
before 8:00 a.m. and shall have the right to use, without charge  therefor,  all
light,  power and water in the Office  Space  reasonably  required  to clean the
Office  Space.  Tenant  shall have the right (x) to use  Tenant's  employees  to
perform day porter  services in the Office  Space  and/or (y)  provided the same
does not disturb  harmony with any trade engaged in performing any other work in
the  Building  or create  any  actual  interference  with the  operation  of the
Building,  to hire day  porters to perform  day  porter  services  in the Office
Space; 

     (g)  except as  expressly  provided  in  Section  4.01(a)(iii),  use of the
Building's  loading  docks  between  the  hours of 6:00 a.m.  and 6:00  p.m.  on
Business Days, on a first come-first served basis (i.e., no advance  scheduling)
and on a reserved  basis at all other  times,  and Tenant  shall pay  Landlord's
actual  out-of-pocket  costs for such  after-hours use of the loading docks;

     (h) Landlord shall  reasonably  cooperate with Tenant,  at Tenant's expense
(if Landlord incurs any  out-of-pocket  expenses  therefor),  so that Tenant may
obtain gas service from the public  utility and,  upon  reasonable  prior notice
from Tenant,  shall  provide any necessary  shutdowns  required for Tenant's tap
into the gas riser and Tenant  shall pay to  Landlord  the actual  out-of-pocket
costs incurred by Landlord in connection with such shutdown (provided, that such
shutdown  shall be at no  charge  to Tenant  if  performed  as part of  Tenant's
initial  Alterations  to the  Blocks);  and

     (i) the ambient noise level in the Office  Space,  measured 8 feet from the
induction units therein,  shall not exceed NC 45,  excluding any noise caused by
any of Tenant's Fixtures or Tenant's Property.

     3.02  Concourse  Space Services . From and after the date that Tenant first
occupies  the  Concourse   Space  for  the   performance  of  Tenant's   initial
improvements therein, Landlord shall, at Landlord's expense (except as otherwise
expressly provided and subject to reimbursement as part of Operating Expenses to
the extent  properly  includable  therein),  furnish  Tenant with the  following
services to the Concourse Space: 

     (a) heat,  ventilation and  air-conditioning to the Primary Concourse Space
during  Business  Hours on Business Days  substantially  in accordance  with the
design specifications set forth in Exhibit G attached hereto, but based upon (i)
an electric heat  dissipation load of 4 watts per usable square foot and (ii) an
occupancy  rate of 1 person per 300 usable square feet,  and  ventilation to the
Secondary  Concourse  Space during  Business Hours on Business Days;

     (b)  freight  elevator  service  in the same  manner  described  in Section
3.01(c)(ii); 

     (c)  electric  energy  at a 400 amp.  fuse  disconnect  switch at 480 volts
located in the  switchgear  room (Tenant  being  responsible  for bringing  such
electric energy from such switch to the Concourse Space);




     (d) from and after the completion,  in accordance with Section  4.01(a)(xi)
below,  of the work  necessary  to provide  such  service,  2 of the 4 passenger
elevators in the elevator bank serving  floors 7-15 which serve the Office Space
shall also serve the Concourse  Space during  Business  Hours on Business  Days,
with at least  one of such  passenger  elevators  subject  to call at all  other
times; (e) up to 20 tons of condenser water to the Primary  Concourse Space on a
year-round  basis  through  the  Building's  condenser  water  system;  and  (f)
reasonable  quantities of hot and cold water to the Primary  Concourse Space for
core lavatory, pantry and cleaning purposes only.

     3.03 Other Building  Services . (a) Landlord  shall employ,  or cause to be
provided,  the  services  of a staff  comparable  to the  staffs  of  comparable
first-class office buildings in midtown Manhattan to perform all of the services
that  Landlord is obligated to perform  pursuant to this Lease.  Landlord  shall
operate and maintain the  Building and all systems  servicing  the Building in a
first-class  manner. 

     (b)  Landlord  shall  provide  Building  security  in  accordance  with the
specifications  attached  to this Lease as Exhibit L;  provided,  that  Landlord
shall have the right to modify  such  specifications  during the Term so long as
Building  security is provided in a manner  which is equal to or better than the
level of  security  set forth in the  specifications  attached  to this Lease as
Exhibit L.

     (c) Landlord shall maintain listings on the Building  directory of the name
of  Tenant  and/or  Tenant's  permitted  subtenants,  and  the  names  of  their
respective  officers and employees;  provided,  that, unless Landlord shall have
installed in the Building a  computerized  directory,  the names so listed shall
equal the product of (i) Tenant's  Operating  Share and (ii) the total number of
listings  available on such  directory.  Landlord  shall install a  computerized
Building  directory on or before the Phase II Target Date.  If Landlord  removes
the  manual  directory  existing  on  the  date  of  this  Lease  prior  to  the
installation  of such  computerized  directory,  Landlord  shall provide a lobby
attendant  during  Business  Hours on  Business  Days to direct  visitors to the
tenants of the  Building.  

     (d) Landlord shall retain a qualified  independent  contractor to test, not
less often  than once in any 12 month  period,  the  indoor  air  quality in the
Building. Upon request of Tenant, Landlord shall provide to Tenant a copy of the
report of any such test. 

     (e) Landlord shall retain a New York State certified laboratory to test and
evaluate the Building water annually (or, at Tenant's  expense,  more frequently
upon reasonable request of Tenant) to detect  bacteriological  contamination and
levels of priority metals, including,  without limitation, lead. Upon request of
Tenant, Landlord shall provide to Tenant a copy of the report of any such test.

     3.04 General  Provisions . (a) Except as provided  elsewhere in this Lease,
Landlord  shall  have no  liability  to  Tenant by  reason  of any  stoppage  or
interruption of any Landlord Service, electricity or other service or the use of
any Building  facilities  and systems.  Landlord  shall provide Tenant with such
advance  notice,  if any,  as is  reasonable  under  the  circumstances  of such
stoppage or  interruption.  Landlord shall use commercially  reasonable  efforts
(including  the use of  overtime  labor to the  extent  that the  curing  of the
problem  in  question  is within  Landlord's  reasonable  control)  to begin and
diligently  prosecute to completion such repairs as may be required to machinery
or equipment  within the Project to provide  restoration of any Landlord Service
as  promptly as possible  and in a manner so as to  minimize  interference  with
Tenant's  use and  enjoyment  of the  Premises,  and,  where  the  cessation  or
interruption  of such  Landlord  Service has  occurred due to  circumstances  or
conditions  beyond the Project  boundaries,  to cause the same to be restored by
diligent  application  or request  to the  provider.  To the  extent  reasonably
possible, Landlord shall confine all such stoppages within Landlord's reasonable
control to times that are not Business Hours.

     (b) Without limiting any of Landlord's other rights and remedies, if Tenant
shall be in default  of any Fixed Rent or  recurring  Additional  Charges  after
notice and beyond all applicable grace periods,  Landlord shall not be obligated
to furnish to the  Premises  any service  outside of Business  Hours on Business
Days, and Landlord shall have no liability to Tenant by reason of any failure to
provide, or discontinuance of, any such service;  provided, that if Tenant shall
pay to Landlord, in advance, the cost payable by Tenant under this Lease for any
such service, Landlord shall furnish such service in accordance with this Lease.

     (c) "Business Hours" means 8:00 a.m. to 6:00 p.m. "Business Days" means all
days except Saturday,  Sundays, New Year's Day, Washington's Birthday,  Memorial
Day, Independence Day, Labor Day, Thanksgiving,  the day following Thanksgiving,
Christmas and any other days which are designated as a holiday by the applicable
Building  Service  Union  Employee  Service  contract  or  Operating   Engineers
contract. Notwithstanding the foregoing, for purposes of any Notice which may or




is required to be given by either party to the other under this Lease, "Business
Days"  shall  exclude  any days which are  observed  by both the federal and the
state governments as legal holidays. 

     (d) In no event  shall  Tenant's  consumption  of  electricity  exceed  the
capacity of existing feeders to the Building or the risers or wiring serving the
Premises. 

(e) (i) Tenant may,  upon not less than 60 days prior  notice to  Landlord  (the
"Direct Cleaning Notice"),  elect to contract directly with Landlord's  cleaning
contractor  for the  cleaning  of the  Office  Space.  Within 30 days  after the
delivery of the Direct  Cleaning  Notice to  Landlord,  Tenant  shall  submit to
Landlord  Tenant's  specifications  for the cleaning of the Office  Space.  Upon
receipt of such specifications, Landlord shall submit the same to the contractor
who is cleaning the Building,  and shall obtain from such contractor a bid which
specifies the portion of the total bid price for cleaning the Building  which is
allocable to the cleaning of the Office  Space.  Provided that the bid submitted
by  such  contractor  is  reasonably  competitive,   Tenant  shall  retain  such
contractor  for the cleaning of the Office Space.  If such bid is not reasonably
competitive,  or if  Tenant  shall in good  faith  determine  that the  cleaning
services  provided by Landlord's  contractor  are not  satisfactory,  Tenant may
retain another contractor  reasonably acceptable to Landlord (which will utilize
the same union local as Landlord's cleaning  contractor) for the cleaning of the
Office  Space;  provided,  that  if  Tenant  retains  a  contractor  other  than
Landlord's contractor,  then (A) any reasonable  out-of-pocket security expenses
incurred  from  time to time by  Landlord  (which  expenses  would not have been
incurred  but for the  presence  of more  than one  cleaning  contractor  in the
Building)  shall  be paid  by  Tenant  within  30 days  after  demand  therefor;
provided,  that  Landlord  shall have  substantiated  to Tenant  both the amount
thereof and the need therefor,  (B) Tenant's  contractor  shall store all of its
equipment  and supplies and material  within the  Premises,  and Landlord  shall
furnish  no space  therefor;  except  that (x) with  respect  to  floors  of the
Premises  which are fully  leased to Tenant,  Tenant shall have the right to use
the  janitor  closets  on such  floors to store  such  equipment,  supplies  and
materials;  and (y) upon request by Tenant, Landlord shall lease to Tenant up to
200  rentable  square  feet in the  sub-cellar  of the  Building  or in  another
location in the  Building  selected by  Landlord  (with  Landlord to endeavor to
select a location at which  running  water is  available)  for locker  space for
Tenant's cleaning contractor (and Landlord and Tenant shall execute and exchange
an  amendment  to this Lease to reflect  the  leasing  of such  locker  space by
Tenant;  provided,  that (1) Tenant  shall not pay Fixed Rent,  Tax  Payments or
Operating  Payments in respect of such space,  nor shall  Tenant's  Tax Share or
Tenant's  Operating  Share be  affected  by the  leasing  of such  space and (2)
Landlord  shall  not be  required  to  perform  any work or pay any  amounts  in
connection  with such  space),  and (C) Tenant  shall bag and place all rubbish,
garbage,  waste  and other  debris in an area  within  the  Premises  reasonably
designated  by  Landlord  daily  prior to the hour  that  Tenant's  contractor's
employees  are required to leave the Building and Tenant shall  arrange with the
contractor  designated  by  Landlord  or at  Landlord's  option  Landlord  shall
arrange,  at  Tenant's  reasonable  expense,  for removal of such items from the
Premises to the Building loading dock at such times as are reasonably designated
by Landlord.  If Tenant  increases the number of cleaning  personnel  beyond the
number of cleaners which would be assigned to clean the Office Space if Landlord
were doing such cleaning (such  increased  number of cleaners are called "Excess
Cleaners"),  then Tenant shall cause Tenant's  cleaning  contractor to have such
Excess Cleaners perform "special cleaning services",  and Tenant shall be solely
responsible for all termination  costs in connection with the termination of the
Excess  Cleaners  at such time as Tenant no longer  cleans its own Office  Space
whether by reason of the expiration of this Lease or otherwise.  If Tenant shall
elect to contract  directly with another cleaning  contractor in accordance with
this Section  3.04(e)(i),  then,  upon request by Tenant,  Landlord shall notify
Tenant of the number of cleaning  personnel which would be assigned to clean the
Office  Space if  Landlord  were  doing  such  cleaning.  Tenant  shall  pay the
contractor  retained  by Tenant  directly  for the cost of  cleaning  the Office
Space,  and Landlord shall not be required to clean the Office Space or any part
thereof. Notwithstanding the foregoing, Landlord shall supervise the work of any
contractor  performing  cleaning  services  in the  Office  Space  (at  Tenant's
request,  such supervision to include taking such reasonable  measures to ensure
the  security of the  Premises  as would be taken by  Landlord if Landlord  were
contracting with such cleaning  contractor) but only Tenant shall have the right
to enforce the contractor's  obligations.  During and for the period that Tenant
shall be receiving  cleaning  services  directly from a contractor  and not from
Landlord, Tenant shall pay to Landlord, as Additional Charges, a supervisory fee
(the "Supervisory  Fee") equal to 2-1/2% of the sums that would have been due by
Landlord  to  Landlord's  cleaning  contractor  to provide to the  Premises  the
cleaning services  specified in Exhibit E, which fee shall be paid by adjustment
to the Fixed Cleaning Rent, as described in Section  3.04(e)(ii)  below. (ii) If
and so long as Tenant obtains cleaning under Section  3.04(e)(i) above, then (A)
there shall be excluded  from  Operating  Expenses  all costs  incurred  for the
cleaning  of the Office  Space in  accordance  with  Exhibit E and the  Building
standard  cleaning of all other  tenant  areas of the  Building,  (B)  Operating




Expenses  for the Base  Operating  Year  shall be reduced by the cost (the "Base
Cleaning Cost") incurred by Landlord in the Base Operating Year for the cleaning
of the Office  Space in  accordance  with  Exhibit E and the  Building  standard
cleaning of all other tenant areas of the Building (provided that there shall be
no  retroactive  Operating  Payment  resulting  from such  reduction in the Base
Operating  Year),  and (C) the Fixed  Rent  provided  in  Section  2.02 shall be
reduced by an amount equal to the Fixed  Cleaning  Rent.  "Fixed  Cleaning Rent"
means  the  amount  determined  from  time to time  by (x)  multiplying  (1) the
quotient   obtained  by  dividing  the  Base  Cleaning  Cost  by  the  Operating
Denominator,  and (2) the  number  of  rentable  square  feet  from time to time
constituting  the  Office  Space  and (y)  subtracting  from  such  product  the
applicable  Supervisory  Fee.  (iii) If Tenant shall elect to contract  directly
with another cleaning contractor in accordance with Section 3.04(e)(i) above for
the provision of cleaning  services to the Office Space,  Tenant may discontinue
obtaining cleaning services from such contractor and require Landlord,  upon not
less than 30 days prior notice, to clean the Office Space in accordance with the
provisions  of  Section  3.01(f).  If  Tenant  elects  to have  Landlord  resume
furnishing  cleaning to the Office Space, then if and so long as Tenant receives
cleaning from  Landlord,  (A) there shall be included in Operating  Expenses the
cost and expenses  incurred  for the cleaning of the Office Space in  accordance
with Exhibit E and the Building  standard  cleaning of all other tenant areas of
the  Building,  (B)  Operating  Expenses  for the Base  Operating  Year shall be
increased by the Base  Cleaning  Cost and (C) the Fixed Rent provided in Section
2.02 shall be increased by the Fixed Cleaning Rent.

     (f) Any  provision of this Lease which  provides that Landlord or employees
of  Landlord  shall  perform a service for Tenant at  Tenant's  cost,  charge or
expense  shall  be  deemed  to  mean  that  Landlord  or  Landlord's  designated
contractor shall perform such service and Tenant shall pay such cost,  charge or
expense for such service to, at  Landlord's  election,  either  Landlord or such
contractor  (subject to the  relevant  provisions  of this Lease with respect to
timing of payment, furnishing of back-up and Tenant's dispute rights).

     (g) Prior to the first  billing (and any time  thereafter at the request of
Tenant) of any Landlord  Service for which the payment that Landlord is entitled
to be reimbursed by Tenant  requires a computation to determine  Landlord's cost
of providing  such service,  Tenant shall be given a reasonable  opportunity  to
review such  computation.  With respect to all  Additional  Charges  invoiced by
Landlord to Tenant, other than Tax Payments,  Operating Payments and payments in
respect of electricity (which remain subject to the relevant  provisions of this
Lease with respect thereto), Landlord shall provide to Tenant, within 5 Business
Days after notice from Tenant,  such  back-up as Tenant may  reasonably  request
with respect to the amount of such invoice. 

     (h) Any  installation  or item of work  permitted or required to be made by
Tenant under this Article 3 shall be made in accordance  with the  provisions of
Section 4.02.





                                    ARTICLE 4
                    Leasehold Improvements; Tenant Covenants

4.01  Initial  Improvements.  (a) (i)  Landlord  shall  perform  or  cause to be
performed in each Block the work described on Exhibit F ("Landlord's Work"). All
Landlord's Work shall be performed by Landlord at Landlord's expense, except for
the work  described  in  Paragraph  27 of Exhibit F which shall be  performed by
Landlord at Tenant's  reasonable  expense.  Subject to delays by reason of Force
Majeure and/or Tenant  Delays,  Landlord  shall,  with respect to each Block (A)
perform  each item of  Landlord's  Work  which,  as set forth on Exhibit F, is a
condition  to  delivery  of such  Block,  in a manner so that the same  shall be
substantially  completed on or before the Fixed Relevant Date applicable to such
Block  and (B)  perform  each item of  Landlord's  Work  which,  as set forth on
Exhibit F, is not a condition to delivery of such Block, in a manner so that the
same shall be  substantially  completed on or before the date set forth for such
substantial  completion  on  Exhibit F. All  initial  improvements  that  Tenant
desires to make to the Premises  which do not constitute  Landlord's  Work shall
constitute  Alterations and shall be performed by Tenant at Tenant's  expense in
accordance  with  Section  4.02.  Subject to delays by reason of Force  Majeure,
within 1 year after the last  Relevant  Date with  respect to any Block,  Tenant
shall have expended not less than $45 per rentable  square foot of such Block in
connection with Tenant's  initial  Alterations in such Block  (inclusive of soft
costs). (ii) As part of Tenant's initial Alterations to the Blocks and any other
space  included in the  Premises,  Tenant  shall have the right to tie-into  the
Building's  Class E system through a sub-panel and to install on any stair tower
re-entry doors in the Premises electronic locks which fail-safe open tied to the
Building's  Class E system  through a  sub-panel.  In no event  shall any direct
tie-ins to the  Building's  Class E system be permitted.  (iii) During  Tenant's
initial  Alterations  to the Blocks,  upon  reasonable  notice to  Landlord  and
subject to reasonable scheduling  requirements of Landlord,  Landlord shall make
the Building's  loading docks  available (A) from 4:00 a.m. until 6:00 p.m. each
Business  Day, at no charge to Tenant and (B) at other  times,  for which Tenant
shall pay to Landlord $28 per hour in the case of Tenant's  initial  Alterations
to the Block A Space and the Block B Space and  Landlord's  actual cost per hour
in  the  case  of   Tenant's   initial   Alterations   to  the  Block  C  Space.
Notwithstanding  the  foregoing,  Landlord  shall only be obligated to make such
loading  docks  available to Tenant (x) for the period  commencing  on the first
Relevant  Date  applicable to the Block A Space or the Block B Space through and
including  the last day of the 9-month  period  commencing  on the last Relevant
Date  applicable to the Block A Space or the Block B Space and (y) for a 9-month
period  commencing  on the Relevant Date  applicable to the Block C Space.  (iv)
During Tenant's initial  Alterations to the Block A Space and the Block B Space,
Landlord  shall  dedicate 1 freight  elevator car to Tenant between the hours of
4:00 a.m. and 6:00 p.m. on Business Days;  provided,  that the Building's  other
freight  elevator car shall then be operational  (and if either freight elevator
shall not be in service,  Landlord shall use commercially  reasonable efforts to
repair same);  and provided  further,  that such dedicated  freight elevator car
shall at all  times be  operated  by  Building  personnel.  Notwithstanding  the
foregoing,  Landlord  shall only be obligated to dedicate such freight  elevator
car to Tenant for the period commencing on the first Relevant Date applicable to
the Block A Space or the Block B Space through and including the last day of the
9-month  period  commencing on the last Relevant Date  applicable to the Block A
Space or the Block B Space. During such Alterations, Tenant shall not be charged
for overtime  freight elevator usage except for any such usage between the hours
of 6:00 p.m.  and 4:00 a.m. on Business  Days and at any time on days other than
Business Days;  provided,  that Tenant shall not be charged for the first 20 man
hours of such overtime  freight  elevator  usage.  (v) During  Tenant's  initial
Alterations  to the  Blocks,  Tenant  shall have the  non-exclusive  right,  but
subject  to the  schedule  for  the  elevator  renovations  and  upgrades  to be
performed  by  Landlord  as part of the Lobby  Renovation  Work,  to use (A) the
passenger  elevators  in the  elevator  bank  serving  floors  15-22  and  (B) 2
passenger  elevators in the elevator bank serving  floors 7-15 (which  passenger
elevators are the same  elevators  being made  available to Tenant in accordance
with Section 3.01(c)(i)(A) above and are not in addition to such elevators), for
transporting  construction  personnel;  provided,  that (w) such personnel shall
enter the  Building  from the 52nd  Street  entrance  or such other  entrance as
Landlord shall  reasonably  designate,  (x) Tenant shall be responsible  for any
costs for union personnel to operate such elevators and for any damage caused to
such elevators by Tenant's  construction  personnel after the renovation of such
elevators (or before such renovation if and to the extent such damage  increases
the cost of such  renovation),  (y) such  elevators  shall  be used  solely  for
transporting Tenant's  construction  personnel and in no event shall the same be
used for transporting  any equipment,  machinery,  tools,  materials or supplies
other than hand tools and other  small  items and (z) the use of such  elevators
shall be  subject to such  reasonable  rules and  regulations  as  Landlord  may
prescribe for such use  (including,  without  limitation,  reasonable  rules and
regulations  requiring  Tenant to take certain actions to prevent damage to such
elevators).  If Tenant or Tenant's construction personnel shall at any time fail
to  comply  with any of the  foregoing  requirements,  upon  notice to Tenant by





Landlord  specifying such failure,  Tenant shall immediately cease such improper
use of the passenger  elevators.  If Tenant or Tenant's  construction  personnel
fail to comply with any of the foregoing  requirements more than 2 times,  then,
upon  notice  from  Landlord,  Tenant  shall have no  further  right to use such
passenger  elevators.  If Tenant  disputes any  determination  by Landlord  that
Tenant  or  Tenant's  construction  personnel  violated  any  of  the  foregoing
requirements,  such dispute shall be resolved by arbitration pursuant to Section
8.09, and, pending the resolution of such dispute, Tenant shall have no right to
use such  elevators for  transporting  construction  personnel.  Anything to the
contrary contained in this Section 4.01(a)(v) notwithstanding, Tenant shall only
have the right to use such  passenger  elevators for  transporting  construction
personnel  in  accordance  with  this  Section  4.01(a)(v)  (1) for  the  period
commencing  on the first  Relevant  Date  applicable to the Block A Space or the
Block  B  Space  through  and  including  the  last  day of the  9-month  period
commencing  on the last  Relevant  Date  applicable  to the Block A Space or the
Block B Space and (2) for a  9-month  period  commencing  on the  Relevant  Date
applicable to the Block C Space. (vi) As part of Tenant's initial Alterations to
the  Premises,  Tenant  shall  perform  the work set forth on  Exhibit Q annexed
hereto ("Tenant's Required Work"). If any Unforeseen Condition arises during the
performance  by Tenant  of any item of  Tenant's  Required  Work,  Tenant  shall
promptly notify Landlord thereof.  Landlord shall at Landlord's  option,  either
remedy such  Unforeseen  Condition  at  Landlord's  expense  using  commercially
reasonable  diligence or, provided  Landlord and Tenant agree as to the scope of
and  cost of the  work to be  performed,  have  Tenant  remedy  such  Unforeseen
Condition and reimburse Tenant for the incremental costs reasonably  incurred by
Tenant to remedy such Unforeseen  Condition.  "Unforeseen  Condition"  means any
condition  affecting  the  Building  structure  or  Building  systems  (i) which
increases  the cost to Tenant of performing  any item of Tenant's  Required Work
above the amount of the work  allowance  provided  by Landlord to Tenant for the
performance  thereof as  specified  on  Exhibit Q annexed  hereto and (ii) which
Tenant did not have  actual  knowledge  of prior to the date of this  Lease,  or
reasonably  should have had knowledge of based upon the joint  inspection of the
Premises,  the Building structure and Building systems conducted by Landlord and
Tenant  prior  to the date of this  Lease.  (vii)  As part of  Tenant's  initial
Alterations to the Blocks,  Landlord shall permit NYNEX, at Tenant's expense, to
install  a  second  port  of  entry  into  the  Building;  provided,  that  such
installation  shall be performed in accordance with all provisions of this Lease
applicable to Alterations  (including,  without limitation,  Landlord's right to
approve  plans and  specifications  therefor)  and such  port of entry  shall be
installed  in one of the 3  locations  indicated  on  Exhibit S annexed  hereto.
(viii) During Tenant's initial  Alterations to the Block A Space and the Block B
Space  (but  not  after  the date  that is 9  months  after  the  Relevant  Date
applicable to the last space  included in the Block B Space),  Tenant shall have
the exclusive right to use, without charge,  the portion of the sub-cellar floor
of the Building  substantially  as shown  hatched on the plan  thereof  attached
hereto as  Exhibit  B-14 (the  "Sub-Cellar  Space")  as a staging  area.  If, in
connection  with Tenant's use of the Sub-Cellar  Space as a staging area for the
construction of Tenant's initial  Alterations to the Block A Space and the Block
B Space,  Tenant shall have  demolished any portion of the cinder block demising
wall of the  Sub-Cellar  Space,  then  promptly  following the last day on which
Tenant  has  the  right  to so use  the  Sub-Cellar  Space  under  this  Section
4.01(a)(viii),  Tenant shall restore such wall to not less than the condition it
was in upon delivery of the Sub-Cellar Space to Tenant.  During Tenant's initial
Alterations  to the Block C Space,  and if and for so long as at any other  time
during the Term Tenant  undertakes  Alterations  of a scope which in  accordance
with good  construction  practice  reasonably  requires a staging  area  located
outside of the  Premises,  Landlord  shall  make  available  to Tenant,  without
charge, either the Sub-Cellar Space or other suitable space in the Building as a
staging area. Notwithstanding the foregoing, Landlord shall only be obligated to
make such  staging  area  available  to Tenant in  connection  with (A) Tenant's
initial  Alterations to the Block C Space (or any applicable  portion  thereof),
for the 9-month period commencing on the Relevant Date applicable to the Block C
Space (or such portion thereof) and (B) any other  Alterations,  if Landlord has
space  available in the Building at the time of such Alteration and, if Landlord
does have  available  space,  then such space shall be made  available to Tenant
only for a reasonable  period of time  commensurate with the scope of work being
performed by Tenant.  Tenant,  at its expense,  shall be solely  responsible for
providing security to any staging area made available to Tenant pursuant to this
Section  4.01(a)(viii)  and  Landlord  shall have no  liability  for any loss or
damage to any item of  Tenant's  property  stored  in such  staging  area.  (ix)
Without  limiting the generality of any other provision of this Lease,  if, with
respect to any Block,  Landlord  shall fail to  substantially  complete the work
described in paragraph 24 of Exhibit F (i.e.,  installation of isolation dampers
and  modification  of fans) on or before the date required for such  substantial
completion  as set forth on Exhibit F, subject to extension  for Tenant  Delays,
Landlord shall reimburse Tenant for any incremental costs reasonably incurred by
Tenant by reason of such failure,  such  reimbursement to be made within 30 days
after  submission  by  Tenant  to  Landlord  of  reasonably   detailed  invoices
substantiating  such costs. (x) Upon reasonable notice to Landlord (which notice
may be oral),  Tenant  shall have the right to enter,  inspect  and  monitor the
Premises  during the course of  Landlord's  Work. If and to the extent that such





entry,   inspection  and  monitoring  is  performed  in  accordance   with  good
construction  practices,  the same shall not  constitute  a Tenant  Delay.  (xi)
Landlord shall install,  at Tenant's expense,  new elevator logic to control the
passenger  elevators in the  elevator  bank  serving  floors 7-15 which  provide
passenger  elevator service to the Premises.  Landlord shall not be permitted to
use such logic to control the other  elevators in such bank or otherwise  unless
Landlord  shall  first pay to Tenant an amount  equal to 50% of the actual  cost
incurred by Tenant for the purchase and  installation  of such  elevator  logic.
Landlord shall  perform,  at Tenant's  expense,  the work necessary to cause the
passenger  elevators  described in Section 3.02(d) to serve the Concourse Space,
which work shall be  substantially  completed  by  Landlord on or before June 1,
1996,  provided,  that (A)  there  are no  material  changes  to the  plans  and
specifications  for  such  work  which  exist on July  17,  1995 and (B)  Tenant
approves  a bid for the  performance  of such work on or before  July 27,  1995.
(xii) Landlord  shall,  at Tenant's  reasonable  expense,  modify the Building's
sprinkler system to provide a 30 minute reserve. Landlord shall submit the plans
and specifications for such work to Tenant for Tenant's reasonable approval and,
after  such  approval  by  Tenant,  perform  the work  shown on such  plans  and
specifications  and make all necessary filings with the Building  Department and
Tenant shall reimburse Landlord for the reasonable expenses incurred by Landlord
in connection  therewith.  Subject to Tenant Delay and Force  Majeure,  Landlord
shall complete such work to modify the Building's  sprinkler system on or before
February 1, 1996; provided, that Tenant acknowledges that all necessary Building
Department  sign-offs  and  approvals  for such work may not be obtained by such
date (but  Landlord  shall  diligently  attempt  to obtain  such  sign-offs  and
approvals).  (xiii)  Tenant may request,  by notice given to Landlord no earlier
than 7 days  prior  to  September  1,  1996,  that  Landlord  inform  Tenant  of
Landlord's  proposed  schedule for the removal of any remaining  vinyl  asbestos
tiles in the  Block B Space.  (xiv)  Subject  to  Tenant's  compliance  with the
provisions  of  Section  4.02,  Tenant  shall have the right to  relocate  the 2
express electric risers which serve the Block B Space on the date of this Lease,
which  relocation  may be performed  by Tenant as soon as the  occupants of such
Block vacate the same,  notwithstanding  that the Block B Relevant  Date may not
have occurred at such time. (xv) As part of Tenant's initial  alterations to the
Blocks,  Tenant shall have the right, as part of Tenant's security  program,  to
install  turnstiles at the entrances to Tenant's  elevator banks in the Building
lobby subject to the location and design thereof being reasonably  acceptable to
Landlord and Tenant.

     (b)  Landlord  shall pay to Tenant a work  allowance  of  $20,301,433  (the
"Block A and B Allowance") to be used by Tenant for costs and expenses  incurred
by Tenant in connection with Tenant's moving into and preparation of the Block A
Space and the Block B Space for Tenant's occupancy.  The Block A and B Allowance
shall be paid by Landlord to Tenant in installments  as follows:  (i) $3,425,499
on the date that this Lease is executed  and  delivered  by Landlord  and Tenant
(provided,  that if this Lease is executed and  delivered by Landlord and Tenant
into  escrow,  then such  installment  shall be paid on the date  this  Lease is
unconditionally released from such escrow; the date that Landlord is required to
pay to Tenant the first installment of the Block A and B Allowance in accordance
with  this  clause  (i) is called  the  "Execution  and  Delivery  Date"),  (ii)
$3,425,499  on or before the 30th day after the  Execution  and  Delivery  Date,
(iii)  $3,425,499  on or before the 60th day after the  Execution  and  Delivery
Date, (iv) $3,425,499 on or before the 90th day after the Execution and Delivery
Date, (v) $3,425,497 on or before the 120th day after the Execution and Delivery
Date and (vi)  $3,173,940  on or before  the 150th day after the  Execution  and
Delivery Date. On or before January 1, 1999, Landlord shall pay to Tenant a work
allowance of $3,567,960 (the "Block C Allowance") to be used by Tenant for costs
and expenses  incurred by Tenant in  connection  with  Tenant's  moving into and
preparation of the Block C Space for Tenant's occupancy. Each of the Block A and
B Allowance and the Block C Allowance is called an "Allowance". All installments
of the  Block A and B  Allowance  and the  Block C  Allowance  shall  be paid by
Landlord  to  Tenant,  at  Landlord's  election,  either  by  wire  transfer  of
immediately  available  federal  funds or by check drawn on a New York  Clearing
House  Association  member bank.

     (c) Tenant shall reasonably  cooperate with Landlord in connection with the
performance by Landlord of Landlord's Work. If Landlord requests any information
from Tenant which is reasonably  necessary to perform Landlord's Work or submits
any drawings, plans or other materials with respect to Landlord's Work to Tenant
for Tenant's  authorization  or approval,  Tenant shall,  within 5 Business Days
thereafter (or within such other time period set forth elsewhere in this Lease),
(i) provide such  information or (ii) authorize or approve such drawings,  plans
or materials or request Landlord to make specific changes therein.

     (d)  Within 30 days  after  Landlord  gives to Tenant an  invoice  therefor
(together  with  reasonable  back-up  documentation),  Tenant  shall pay (i) the
actual  costs  incurred  by  Landlord,  based on the bids that were  approved by
Tenant for such work, in connection  with (A) the  installation  of the elevator
logic in accordance  with Section  4.01(a)(xi),  (B) the performance of the work
described  in  Section  4.01(a)(xi)  to cause  the  Concourse  Space to  receive





passenger  elevator service,  and (C) the interior finishes to Tenant's security
desk areas in  accordance  with Section  8.21(b) and (ii) the  reasonable  costs
incurred by  Landlord in  connection  with (A) the  installation  of the express
riser and electric  meter in accordance  with paragraph 27 of Exhibit F, (B) the
installation  of Tenant's  signage in  accordance  with  Section  8.20,  (C) the
installation  of the electric  meter in the Concourse  Space in accordance  with
Section  1.03(i),  (D) the  performance  of the work to  modify  the  Building's
sprinkler  system to provide a 30 minute  reserve  in  accordance  with  Section
4.01(xii) and the preparation of plans and  specifications  with respect to such
work and the making of all necessary filings with the Building  Department,  and
(E) any other  work which is being  performed  by  Landlord  under this Lease at
Tenant's   expense.   Anything   contained   in  this  Lease  to  the   contrary
notwithstanding,  Landlord  shall have no  obligation to perform any of the work
described in clauses (i)(A), (i)(B) and (i)(C) above unless and until Tenant has
approved a bid for such item of work.

     (e) With  respect  to the work  described  in  paragraph  26 of  Exhibit F,
Landlord shall deliver to Tenant a sketch  therefor  indicating the  termination
points of the base building  plumbing lines.  With respect to the work described
in  paragraph  27 of Exhibit F,  Landlord  shall  deliver to Tenant for Tenant's
approval plans and specifications for such work; provided, that Tenant shall not
unreasonably  withhold such approval and such approval  shall be deemed given by
Tenant if Tenant  fails to approve or  disapprove  the same within 14 days after
Tenant  receives  such plans and  specifications.  

     (f)  Anything  to the  contrary  contained  in this  Lease  notwithstanding
(including,  without limitation,  Sections 1.02 and 4.04), prior to the Relevant
Date with respect to the Initial Possession Space (i) Tenant shall have no right
to perform any Alterations in and to the Initial Possession Space or to possess,
use or occupy the Initial  Possession  Space in any manner which interferes with
Landlord's  performance of Landlord's Work (or any other work being performed by
Landlord)  in the  Initial  Possession  Space and (ii)  Landlord  shall have the
unconditional  right to enter the Initial Possession Space to perform Landlord's
Work therein (including, without limitation,  demolishing the demising walls and
all systems servicing the Initial Possession Space) or for any other purpose and
all other  provisions  of this  Lease  regarding  Landlord's  right to enter the
Premises  shall not be applicable to the Initial  Possession  Space  (including,
without  limitation,  any  provision of this Lease which  requires that Landlord
notify Tenant prior to entering the Premises or that Landlord be  accompanied by
a representative of Tenant or that Landlord perform its work therein in a manner
so as to mitigate  interference with Tenant).  The Relevant Date with respect to
the Initial  Possession  Space shall not be deemed to occur  solely by reason of
Tenant's right to possess,  use and occupy the Initial Possession Space from and
after the date of this Lease in accordance with Section 1.02, but shall occur in
accordance  with the relevant  provisions of Section 1.03.  "Initial  Possession
Space"  means the  portion of the 15th floor of the  Building  substantially  as
shown hatched on the plan thereof attached hereto as Exhibit B-15.

     4.02  Alterations.  (a)  Tenant  shall  make no  improvements,  changes  or
alterations  in or to the Premises  ("Alterations")  which  constitute  Material
Alterations  without  Landlord's  prior approval.  Prior to the  commencement by
Tenant of any Alteration  which does not constitute a Material  Alteration,  but
which does require  Tenant to obtain a building  permit  therefor,  Tenant shall
notify  Landlord of such  Alteration  and of the names of the  contractors to be
used by Tenant to perform such Alteration,  which notice shall be accompanied by
any and all available plans and  specifications  for such Alteration.  If Tenant
fails to give such notice to Landlord with respect to any such Alteration,  such
failure  shall not  constitute  a default  hereunder  and  Tenant  shall have no
liability to Landlord  solely by reason of such failure,  unless  Landlord shall
incur any loss,  liability or damage by reason of Tenant's  performance  of such
Alterations,  in  which  case,  subject  to  Section  7.05(f),  Tenant  shall be
responsible for all of such losses, liabilities and damages incurred by Landlord
(including, without limitation, any costs and expenses relating thereto) and, in
addition  thereto,  Tenant  shall  pay to  Landlord  a fee in  respect  of  such
Alteration  in an amount equal to 2% of the cost of such  Alteration.  "Material
Alteration"  means any  Alteration  that (i)  affects the floor  slabs,  ceiling
slabs, load-bearing walls, or load-bearing columns of the Building, (ii) affects
the exterior of the  Building,  (iii)  affects  areas outside of the Premises or
those portions of the Building  systems  servicing areas of the Building outside
of the Premises,  (iv) requires work to be performed  outside of the Premises or
(v) requires a change to the Building's certificate of occupancy. 

     (b)  Tenant,  in  connection  with any  Alteration,  shall  comply with the
Alteration Rules and Regulations set forth as Exhibit D attached hereto.  Tenant
shall not  proceed  with any  Material  Alteration  unless  and  until  Landlord
approves  Tenant's  plans  and  specifications  therefor.   Landlord  shall  not
unreasonably  withhold  its consent to any  Material  Alteration  which will not
affect space leased to, or services  provided to,  another tenant or occupant of





the  Building.  Landlord  shall not  arbitrarily  withhold  its  consent  to any
Material  Alteration  which  affects  space leased to, or services  provided to,
another tenant or occupant of the Building.  Landlord shall,  within 10 Business
Days following receipt of Tenant's plans and  specifications for the performance
of any Material Alteration,  advise Tenant of Landlord's approval or disapproval
of such plans and specifications or any part thereof.  If Landlord shall fail to
approve or  disapprove  Tenant's  plans and  specifications  or any part thereof
within  such 10  Business  Day  period,  Tenant  shall  have the right to give a
reminder  notice to  Landlord  and if  Landlord  fails to approve or  disapprove
Tenant's  plans and  specifications  or any part  thereof  within 1 Business Day
after receipt of such reminder notice, Landlord shall be deemed to have approved
such plans and specifications or the applicable part thereof.  If Landlord shall
disapprove such plans and specifications  (or any part thereof),  Landlord shall
set forth its reasons for such  disapproval in writing and in reasonable  detail
and itemize  those  portions  of the plans and  specifications  so  disapproved.
Landlord  shall  advise  Tenant  within 5  Business  Days  following  receipt of
Tenant's revised plans and  specifications,  or portions thereof,  of Landlord's
approval or disapproval of the revised plans and  specifications  or any portion
thereof, and shall set forth Landlord's reasons for any such further disapproval
in writing and in reasonable  detail. If Landlord fails to approve or disapprove
the  revised  plans and  specifications  or any  portion  thereof  within such 5
Business Day period,  Tenant  shall have the right to give a reminder  notice to
Landlord  and if  Landlord  fails to approve or  disapprove  Tenant's  plans and
specifications  or any part thereof  within 1 Business Day after receipt of such
reminder notice, Landlord shall be deemed to have approved the revised plans and
specifications or such portions thereof.  Notwithstanding the foregoing,  in the
case of Tenant's initial  Alterations to any Block, Tenant shall not be required
to give the 1 Business Day reminder  notice to Landlord  prior to Landlord being
deemed to have approved Tenant's plans and specifications (including any revised
plans and  specifications)  or any part thereof in accordance  with this Section
4.02(b).  Any review or approval by  Landlord of plans and  specifications  with
respect to any  Alteration  is solely for  Landlord's  benefit,  and without any
representation or warranty to Tenant with respect to the adequacy,  correctness,
its compliance with Laws or efficiency thereof or otherwise.

     (c) If Landlord  uses an outside  consultant to review  Tenant's  plans and
specifications  for  any  Material   Alteration  (other  than  Tenant's  initial
Alterations to any portion of the Premises) and Tenant is not using an architect
or  engineer  designated  by  Landlord  for the  preparation  of such  plans and
specifications,  then Tenant shall pay to Landlord the reasonable actual fees of
such outside consultant for reviewing such plans and specifications. 

     (d) Tenant shall obtain (and furnish  copies to Landlord of) all  necessary
governmental  permits and  certificates  for the commencement and prosecution of
Alterations  and for final  approval  thereof upon  completion,  and shall cause
Alterations to be performed in compliance  therewith and in compliance  with all
Laws and, in the case of Material  Alterations,  in  compliance  in all material
respects  with the plans and  specifications  approved by Landlord.  Alterations
shall be performed in a good and  workmanlike  manner,  using new  materials and
equipment  at least  equal in quality  and class to the then  standards  for the
Building  reasonably  established  by Landlord.  Material  Alterations  shall be
performed by contractors  first approved by Landlord which approval shall not be
unreasonably withheld or delayed;  provided,  that all tie-ins to the Building's
life safety  systems  shall be  performed  only by a  contractor  designated  by
Landlord,  provided the rates of such contractor are reasonably competitive with
rates  charged by other  contractors  performing  such  services in  first-class
office buildings in midtown  Manhattan.  The performance of any Alteration shall
not be done in a manner which would  disturb  harmony with any trade  engaged in
performing any other work in the Building or create any actual interference with
the operation of the Building.  Tenant shall immediately stop the performance of
any Alteration if Landlord notifies Tenant that continuing such Alteration would
so disturb  harmony with any trade engaged in  performing  any other work in the
Building or create any actual  interference  with the operation of the Building.

     (e) Throughout the performance of Alterations,  Tenant shall carry worker's
compensation  insurance in statutory  limits,  "all risk" Builders Risk coverage
and general liability insurance,  with completed operation endorsement,  for any
occurrence  arising from the  performance  of such  Alterations  in or about the
Project, under which Landlord and its agent and any Superior Lessor and Superior
Mortgagee  whose name and address  have been  furnished  to Tenant shall (in the
case of such general  liability  insurance only) be named as additional  parties
insured as their interest may appear,  in such limits as Landlord may reasonably
require  (but not in  excess  of such  limits  as are  customarily  required  by
landlords of similar  midtown  Manhattan  buildings for similar jobs costing the
amount of the particular job being  performed for Tenant).  Tenant shall furnish
Landlord  with  evidence  that such  insurance  is in  effect  at or before  the
commencement  of the performance of Alterations  and, on request,  at reasonable
intervals  thereafter  during the continuance of the performance of Alterations.





     (f) Should any mechanics' or other lien be filed against any portion of the
Project by reason of the acts or (where Tenant has an affirmative  obligation to
act  pursuant  to the terms of this Lease)  omissions  of, or because of a claim
against,  Tenant,  any  subtenant of Tenant or any of their  respective  agents,
employees  or  contractors,  Tenant  shall  cause  the  same to be  canceled  or
discharged  of record by bond or  otherwise  within 45 days  after  notice  from
Landlord.  If Tenant shall fail to cancel or discharge any such lien within said
45 day period,  Landlord  may cancel or  discharge  the same only by bonding the
same,  in which event Tenant shall obtain and  substitute a bond for  Landlord's
bond and reimburse  Landlord for all  reasonable  costs incurred in canceling or
discharging such liens (including,  without  limitation,  the cost of Landlord's
bond and of any security posted to obtain Landlord's bond), such substitution to
be effected and  reimbursement to be made within 30 days after receipt by Tenant
of a detailed written  statement from Landlord as to the amount of such bond and
costs.  Except if and to the extent arising from an act or (where such party has
an affirmative  obligation to act pursuant to the terms of this Lease)  omission
of any Landlord  Indemnified Party, Tenant shall indemnify and hold all Landlord
Indemnified  Parties  harmless  from and against all costs  (including,  without
limitation,  attorneys'  fees and  disbursements  and  costs of  suit),  losses,
liabilities  or causes of action caused by the  performance  of any  Alteration,
including,  without  limitation,  any  mechanics'  or other  liens  asserted  in
connection with the performance of such Alteration. 

     (g) At Landlord's request, Tenant shall deliver to Landlord, within 30 days
after the completion of an Alteration,  "as-built" drawings thereof (but only if
the Building  Department  shall  require  Tenant to submit the same or if Tenant
shall  otherwise  have  prepared  the same) and,  otherwise,  the final  working
drawings therefor. Tenant shall keep records of Alterations costing in excess of
$25,000  and of the cost  thereof  and  shall,  within 30 days  after  demand by
Landlord,  furnish to Landlord  copies of such  records and cost. 

     (h) Landlord shall  reasonably and diligently  cooperate with Tenant in the
performance  of  Alterations,  including,  without  limitation,  by signing such
applications for governmental  permits and certificates as Tenant may reasonably
require.  Provided  that Tenant  shall have  submitted to Landlord the plans and
specifications applicable to the Alteration in question, Landlord shall sign and
return any such  application  within 2 Business  Days after  receipt of Tenant's
request therefor. Notwithstanding the foregoing, Landlord shall not be deemed to
have approved  Tenant's  plans and  specifications  with respect to any Material
Alteration  by  reason  of  Landlord  signing  any  such  application  prior  to
Landlord's  approval (or deemed approval) of such plans and specifications  and,
notwithstanding Landlord's signing such application prior to Landlord's approval
(or  deemed  approval)  of  such  plans  and  specifications,   such  plans  and
specifications  shall remain subject to Landlord's  approval in accordance  with
the terms of this  Section 4.02 and Landlord  shall not be  responsible  for any
additional costs incurred by Tenant by reason of any additional  filing with the
Building Department  required by reason of Landlord's  subsequent review of such
plans and specifications.

     4.03  Landlord's  and  Tenant's  Property.  (a)  All  fixtures,  equipment,
improvements and appurtenances  attached to or built into the Premises,  whether
or not at the expense of Tenant,  which  cannot be removed  without  significant
damage to  Premises or the  Building  (collectively,  "Fixtures"),  shall be and
remain a part of the  Premises,  and shall not be removed  by Tenant,  except as
provided in Section  4.03(b),  and subject to Tenant's rights to alter or remove
Fixtures in  connection  with any  Alteration.  Upon such  removal  Tenant shall
immediately  and at its expense,  repair any damage to the Premises which Tenant
is required to repair in  accordance  with Section  4.05(a) due to such removal.
All  Fixtures  shall  be the  property  of  Tenant  during  the Term  and,  upon
expiration or earlier  termination  of this Lease,  shall become the property of
Landlord.

     (b) All fixtures,  equipment,  improvements and appurtenances  which do not
constitute Fixtures and all furniture, furnishings and other articles of movable
personal property located in the Premises  (collectively,  "Tenant's  Property")
shall be and shall remain the property of Tenant and may be removed by Tenant at
any time during the Term;  provided,  that if any Tenant's  Property is removed,
Tenant  shall  repair any damage to the  Premises  which  Tenant is  required to
repair in accordance with Section 4.05(a) resulting from the installation and/or
removal  thereof.

     (c) At or before the  Expiration  Date, or within 15 days after any earlier
termination of this Lease,  Tenant, at Tenant's  expense,  shall remove Tenant's
Property  from the Premises  (except such items  thereof as Landlord  shall have
expressly permitted to remain, which shall become the property of Landlord), and
Tenant  shall  repair any damage to the  Premises  which  Tenant is  required to
repair in accordance with Section 4.05(a) resulting from any installation and/or
removal of Tenant's Property. Any items of Tenant's Property which remain in the
Premises  after the  Expiration  Date,  or after 15 days  following  an  earlier
termination  date, may, after 10 days notice to Tenant (except that, in the case





of an earlier  termination of this Lease by reason of a default by Tenant,  such
notice shall not be required), at the option of Landlord, be deemed to have been
abandoned, and may be retained by Landlord as Landlord's property or disposed of
by Landlord, without accountability, in such manner as Landlord shall determine,
at Tenant's expense;  provided that, if after the Expiration Date or any earlier
termination  date there shall remain in the Premises any Tenant's  Property that
has not been abandoned or deemed abandoned by Tenant, and if Landlord shall then
require vacant  possession of the Premises,  Landlord  shall have the right,  at
Tenant's  reasonable  expense,  using due care, to move  Tenant's  Property into
storage at a location in the Borough of  Manhattan  and, if Tenant shall fail to
remove such Tenant's Property from such storage area within 10 days after demand
by Landlord  (such 10 days to be extended if Tenant shall be unable to so remove
Tenant's  Property by reason of events beyond Tenant's  reasonable  control (for
example,  a  movers'  strike;  it being  acknowledged  by Tenant  that  Tenant's
inability to move into new  premises by reason of a holdover  therein or because
such  premises is not then ready for  occupancy  shall not  constitute  an event
beyond Tenant's  reasonable control for purposes hereof) until 10 days after the
date that  Tenant is no longer  so  unable to remove  Tenant's  Property),  such
Tenant's Property shall be deemed to have been abandoned, and may be retained by
Landlord  as   Landlord's   property  or  disposed  of  by   Landlord,   without
accountability, in such manner as Landlord shall determine, at Tenant's expense.

     (d)   Anything   contained   in  this   Section   4.03   to  the   contrary
notwithstanding,  Tenant,  on or before  the  Expiration  Date or within 15 days
after  any  earlier  termination  of this  Lease,  shall  remove  any  equipment
installed by Tenant on the roof (provided,  that Tenant shall not be required to
remove any conduits or cables  installed in connection with the  installation of
the  Antenna)  and any  equipment  installed  by  Tenant on any  setback  of the
Building which  equipment is not in good working order on the Expiration Date or
such earlier date of termination of this Lease.  Any such equipment which Tenant
is  required  to remove and which is not so removed  after  Landlord  shall have
given Tenant reasonable  access to the roof or setback,  as the case may be, for
such  removal  shall be deemed to have been  abandoned  and may be  retained  by
Landlord  as   Landlord's   property  or  disposed  of  by   Landlord,   without
accountability,  in  such  manner  as  Landlord  shall  determine,  at  Tenant's
reasonable  expense. If the removal of any such equipment (whether by Tenant or,
if pursuant to the preceding sentence, by Landlord) results in the impairment of
the  integrity  of the roof or any  setback,  as  applicable,  then Tenant shall
restore the integrity thereof.

     4.04 Access and Changes to Building.  (a) Landlord  reserves the right,  at
any time,  to make changes in or to the Project  (other than within the Premises
except as provided in the further  provisions  of this Section 4.04 or elsewhere
in this Lease) as Landlord may deem  necessary or desirable,  and Landlord shall
have no liability to Tenant  therefor;  provided,  that any such change does not
interfere  with Tenant's  reasonable  access to the Premises and does not affect
the  first-class  nature of the  Project.  Nothing  contained  in the  preceding
sentence shall be deemed to relieve Landlord of any of its obligations expressly
set forth  elsewhere in this Lease.  Landlord  may install and  maintain  pipes,
fans, ducts, wires and conduits within or through the walls,  floors or ceilings
of the  Premises;  provided,  that the same are concealed  behind  walls,  below
floors,  or above  ceilings.  In exercising  its rights under this Section 4.04,
Landlord shall (i) use  commercially  reasonable  efforts  (including the use of
overtime  labor if the  performance  of any work by  Landlord  shall  materially
interfere with Tenant's use of the Premises for the ordinary conduct of Tenant's
business) to minimize any interference with Tenant's use of the Premises for the
ordinary  conduct of Tenant's  business by reason of the performance of any work
by Landlord and (ii) use best efforts to prevent any permanent interference with
Tenant's use of the Premises  for the ordinary  conduct of Tenant's  business by
reason of any installation or change made by Landlord. Tenant shall not have any
easement  or  other  right in or to the use of any  door or any  passage  or any
concourse  or any plaza  connecting  the  Building  with any subway or any other
building or to any public  conveniences,  and the use of such  doors,  passages,
concourses, plazas and conveniences may, upon reasonable prior notice to Tenant,
be reasonably regulated or discontinued at any time by Landlord;  provided, that
no other  tenants in the Building  shall have the right to  permanently  use the
same in any manner more favorable  than Tenant. 

     (b) Except for the space within the inside  surfaces of all walls,  ceiling
slabs,  floors,  windows and doors  bounding the Premises,  all of the Building,
including, without limitation,  exterior Building walls, core corridor walls and
doors and any core  corridor  entrance,  any  terraces or roofs  adjacent to the
Premises,  and any space in or adjacent to the Premises used for shafts, stacks,
pipes, conduits,  fan rooms, ducts, electric or other utilities,  sinks or other
Building facilities,  and the use thereof, as well as access thereto through the
Premises,  are  reserved to Landlord and are not part of the  Premises.  Nothing
contained in this Section 4.04(b) shall be construed (i) to require Landlord, or
to permit Tenant, to remove or relocate,  on any partial floor leased by Tenant,
any item used by (or  reserved  for use by)  another  tenant or  occupant of the
Building,  or (ii) to diminish  Tenant's right under Article 11 or other express
provisions  of this  Lease  which  permit  Tenant  to use  shaft  space or other
non-Premises  space in the  Building. 





     (c)  Landlord  shall have no liability to Tenant if at any time any windows
of the Premises are either  temporarily  darkened or obstructed by reason of any
repairs,  maintenance  and/or  cleaning in or about the Building (or permanently
darkened or  obstructed  if  required  by Law for reasons  other than any act or
(where  Landlord has an  affirmative  obligation to act pursuant to the terms of
this Lease) omission of Landlord or any of Landlord's  Affiliates) or covered by
any translucent material for the purpose of energy conservation,  or if any part
of the  Building,  other than the  Premises  and all other  public  areas of the
Building used by Tenant (subject to Landlord's rights under Section 4.04(a)), is
temporarily or permanently closed or inoperable.  Notwithstanding the foregoing,
if more than 20% of the windows of the Premises shall be permanently darkened or
obstructed  (exclusive of any such obstruction that is not materially worse than
any obstruction  existing on the date of this Lease),  Tenant may terminate this
Lease either as to the entire  Premises or as to the  portion(s) of the Premises
affected thereby  (provided that any such portion(s) of the Premises as to which
Tenant terminates this Lease shall constitute  tenantable units) without payment
of any  penalty  (and,  in the case of a  termination  of less  than the  entire
Premises, with a pro rata reduction of Tenant's Rent obligations to reflect such
partial  termination).  In the event of any termination of this Lease under this
Section  4.04(c),  whether as to all or a portion of the Premises,  Tenant shall
pay to Landlord the amount, if any, due in accordance with Section 7.06 below.

     (d) Landlord and persons  authorized by Landlord shall have the right, upon
reasonable  prior notice to Tenant (except in an emergency,  in which case, upon
such notice, if any, as is feasible),  to enter the Premises  (together with any
necessary  materials  and/or  equipment),  to inspect  or  perform  such work as
Landlord may reasonably  deem  necessary or desirable and as is permitted  under
this Lease, or to exhibit the Premises to prospective  purchasers or, during the
last 18 months of the Term,  to  prospective  tenants.  Landlord  shall  have no
liability  to Tenant by reason of any such entry;  provided,  that (i)  Landlord
shall use  commercially  reasonable  efforts (unless a higher standard  provided
elsewhere  in this Lease is  applicable  to such entry by  Landlord) to minimize
interference with Tenant's use and enjoyment of the Premises and to exercise due
care in entering or exhibiting  the Premises and (ii) Landlord  shall repair any
damage caused by Landlord in the Premises during such entry, including,  without
limitation,  any repair or replacement  required to any finishes in the Premises
as a result of such entry. During the performance of any work by Landlord in any
portion of the Premises,  Landlord  shall have the right to store  materials and
equipment  utilized in connection  with such work in the portion of the Premises
where such work is being performed, but only if Landlord would suffer a hardship
if Landlord were  required to remove such  materials and equipment at the end of
each day's work.  Except in an emergency,  Landlord shall not enter the Premises
unless  accompanied by a representative of Tenant;  provided,  that Tenant makes
such  representative  available to Landlord upon  reasonable  prior notice. 

     (e) Landlord shall not change the address of the Building at any time.

     4.05  Repairs.  (a)  Except if and to the  extent  the  following  shall be
Landlord's  obligation  pursuant to the express provisions of this Lease, Tenant
shall keep the Premises  (including,  without limitation,  all Fixtures) in good
condition  and,  upon  expiration  or  earlier  termination  of the Term,  shall
surrender  the same to Landlord in its then "as is"  condition  (but  subject to
Section 4.03). All damage caused by Tenant,  its agents,  subtenants  (including
any licensee or other occupant  described in Section  5.01(d)) and its and their
respective employees,  contractors and invitees (so long as such invitees are in
the Premises) (i) to the equipment and other installations in the Premises shall
be repaired by Tenant if and to the extent that Tenant's  failure to repair such
damage  causes or is  reasonably  likely to cause  any  loss,  cost,  liability,
damage, harm, material  inconvenience or expense to Landlord or any other tenant
of the Building and (ii) to the solar film  attached to the exterior  windows of
the Premises  shall be repaired by Landlord at Tenant's  reasonable  expense (it
being  acknowledged  that any repair to such solar  film  required  by reason of
ordinary  wear and tear shall be performed by Landlord at  Landlord's  expense).
Neither Tenant nor Tenant's agents,  subtenants (including any licensee or other
occupant   described  in  Section  5.01(d))  and  their  respective   employees,
contractors  and invitees (so long as such invitees are in the  Premises)  shall
commit any waste or damage to any portion of the Premises or the  Building.

     (b) Except if and to the extent the following shall be Tenant's  obligation
pursuant to the express provisions of this Lease,  Landlord shall, at Landlord's
cost and expense (subject to reimbursement by Tenant as Operating Expenses,  but
only if and to the extent such costs and expenses are not  excludable  therefrom
pursuant to the express provisions of Section 2.05), operate,  maintain,  repair
and  replace  (if  reasonably  necessary)  (i) all  structural  portions  of the
Building (whether located within or outside of the Premises), such as, by way of
example only,  the roof,  foundation,  footings,  exterior  walls,  load-bearing
columns,  ceiling and floor slabs,  windows,  window sills and sashes,  (ii) all





common and public service areas of the Building,  including, without limitation,
all  elevators,  corridors,  lobbies,  core  lavatories  (including all fixtures
therein),  core electric closets, core  telecommunication  closets, core janitor
closets  (unless and for so long as Tenant  elects to contract  directly  with a
contractor to clean the Office Space in accordance  with Section  3.04(e) above)
and,  on floors  which are not fully  leased by Tenant,  core  freight  elevator
lobbies,  (iii) all items of  Tenant's  Required  Work,  subject to the  further
provisions of this Section 4.05(b), (iv) the solar film attached to the exterior
windows  of the  Premises,  and (v) all  Building  systems  (including,  without
limitation,  the sprinkler  system,  other than Tenant's  distribution  thereof)
(whether  such Building  systems are located  within or outside of the Premises)
serving the common and public  service  areas and the  Premises  (other than any
distribution  of such systems  located in the Premises and  installed by Tenant,
unless such  distribution  was  installed  by Tenant in place of Landlord (A) by
reason of the  exercise by Tenant of its  self-help  remedy in  accordance  with
Section 10.01 or (B) as part of Tenant's  Required Work) (the areas described in
clauses (i), (ii),  (iii),  (iv) and (v) are  collectively  called the "Landlord
Obligation  Areas"),  in each case throughout the Term, and in such manner as is
consistent with the  maintenance,  operation and repair standards of first-class
office  buildings  located in the vicinity of the Building.  Tenant shall obtain
commercially  reasonable  warranties for each item of Tenant's Required Work. If
Tenant  fails  to  obtain a  commercially  reasonable  warranty  for any item of
Tenant's Required Work, then Tenant shall reimburse  Landlord for the reasonable
cost of any  maintenance,  repair or  replacement  with  respect to such item of
Tenant's  Required  Work if and to the  extent  that the same  would  have  been
covered  by  a   commercially   reasonable   warranty.   Landlord  shall  obtain
commercially  reasonable  warranties  in  connection  with the  installation  by
Landlord in the Building of any item, if the cost of maintaining,  repairing and
replacing  such item would  otherwise  be  payable by Tenant,  whether by way of
Operating  Expenses  or  otherwise.   If  Landlord  fails  to  obtain  any  such
commercially  reasonable warranty,  then Tenant shall not be responsible for the
cost  of  any   maintenance,   repair  or  replacement   thereof  (by  means  of
reimbursement  as part of Operating  Expenses or otherwise) if and to the extent
that  the  same  would  have  been  covered  by such a  commercially  reasonable
warranty.  For purposes of this Section 4.05(b) (with respect to both Tenant and
Landlord), a commercially  reasonable warranty means the warranty, if any, which
would  be  obtained  by an  owner  of a  first  class  office  building,  acting
prudently, in connection with the work in question.

     4.06  Compliance  with  Laws.  (a)  Tenant  shall  comply  with  all  laws,
ordinances,   rules,  orders  and  regulations   (present,   future,   ordinary,
extraordinary,   foreseen  or  unforeseen)  of  any   governmental,   public  or
quasi-public  authority or of the New York Board of  Underwriters,  the New York
Fire  Insurance  Rating  Organization  or any other  entity  performing  similar
functions  (including,  without limitation,  all building and fire codes, zoning
requirements,  asbestos laws,  environmental  laws and ADA), at any time duly in
force  (collectively  "Laws"),  but only if and to the  extent  such  compliance
obligation is the result of any Alteration or particular manner of use by Tenant
(in contrast to use by Tenant for customary  office purposes) of the Premises or
any part thereof;  it being  acknowledged  that (i) all Laws affecting  Tenant's
occupancy of the Premises (as opposed to Laws requiring  physical changes to the
Premises) shall be Tenant's  obligation and (ii) all Laws governing Tenant's use
of the Premises for the Identified  Ancillary Uses shall be Tenant's obligation.
Notwithstanding the foregoing,  Tenant shall comply with all Laws imposed by the
Occupational  Safety  and Health  Administration  or other  governmental  agency
relating  to indoor air  quality  with  respect to the  distribution  of the air
within the Premises  (subject to Landlord's  obligation under Section 4.06(c) to
comply with all such Laws with  respect to air brought to the  Premises  through
the  Building's  systems).  Without  limiting the  generality  of the  indemnity
obligation of Tenant under Section 6.12(b), Tenant shall indemnify and hold each
Landlord Indemnified Party harmless from and against any and all claims,  costs,
expenses  (including,   without  limitation,   reasonable  attorneys'  fees  and
disbursements)  and  liabilities  caused by Tenant's  failure to comply with the
foregoing  indoor air  quality  requirements,  except if and to the extent  such
failure is caused by the acts or (where  Landlord has an affirmative  obligation
to act pursuant to the terms of this Lease)  omissions of Landlord or Landlord's
agents,  employees or contractors.  Tenant shall not place a load upon any floor
of the  Premises  exceeding  the floor load per square  foot which is allowed by
applicable  Laws. 

     (b) Anything  contained in this Lease to the contrary  notwithstanding,  as
part of Tenant's initial Alterations, Tenant shall perform all work and make all
installations  necessary in order to fully  sprinkler the Premises in compliance
with the provisions of Local Law 5 of the New York City Administrative  Code, as
approved January 18, 1973, as amended from time to time.  Landlord shall provide
a sprinkler  riser in the Building in accordance  with Paragraph 3 of Exhibit F.





     (c) Except as otherwise expressly made the obligation of Tenant pursuant to
this Lease,  Landlord  shall,  at  Landlord's  own cost and expense  (subject to
reimbursement  as  Operating  Expenses to the extent such costs and expenses are
includable  therein),  comply with all Laws  affecting  the Landlord  Obligation
Areas and all Laws that require physical changes in or to the Premises.  Without
limiting the generality of the foregoing:  (i) Landlord shall maintain in effect
a certificate of occupancy for the Building that shall allow the Office Space to
be used as general,  professional,  administrative  and  executive  offices (but
Landlord  shall have no  obligation to modify such  certificate  of occupancy to
permit any of the Identified Ancillary Uses; provided,  that if such certificate
of occupancy  shall permit any of the  Identified  Ancillary  Uses in the Office
Space,  then  Landlord  shall not cause  such  certificate  of  occupancy  to be
modified so as to prohibit  Tenant from using such  portion of the Office  Space
for such  permitted  Identified  Ancillary  Use); and (ii) Landlord shall comply
with all Laws imposed by the Occupational  Safety and Health  Administration  or
other governmental agency relating to indoor air quality with respect to (A) the
public and service areas of the Building,  and (B) the heating,  ventilating and
air-conditioning services and systems furnished by Landlord to the Premises (but
only up to the point of delivery of such services and systems to the supply duct
at the core wall on each floor of the Premises). Without limiting the generality
of the indemnity  obligation of Landlord under Section  6.12(c),  Landlord shall
indemnify and hold each Tenant  Indemnified  Party harmless from and against any
and all claims,  costs,  expenses  (including,  without  limitation,  reasonable
attorneys' fees and  disbursements) and liabilities caused by Landlord's failure
to comply with the foregoing indoor air quality  requirements,  except if and to
the  extent  such  failure  is  caused  by the  acts  or  (where  Tenant  has an
affirmative  obligation to act pursuant to the terms of this Lease) omissions of
Tenant or Tenant's agents, employees or contractors.

     4.07 Tenant Advertising.  Tenant shall not use, and shall cause each of its
Affiliates  not to use,  the name or likeness of the  Building or the Project in
any  advertising  (by whatever  medium)  without  Landlord's  consent (not to be
unreasonably  withheld  or  delayed).  Tenant  shall  not in any way  represent,
whether in advertising,  correspondence  or otherwise,  that the Building or the
Premises is part of Rockefeller Center or Rockefeller Plaza.

     4.08 Right to Perform Tenant  Covenants.  If Tenant fails to perform any of
its obligations under this Lease,  Landlord, any Superior Lessor or any Superior
Mortgagee  (each,  a "Curing  Party")  may  perform  the same at the  reasonable
expense  of Tenant (a) after  such  notice,  if any,  as is  feasible  under the
circumstances in the case of emergency,  imminent violation of any Law, imminent
cancellation of any insurance policy maintained by Landlord,  imminent threat of
danger to the health or safety of  persons,  imminent  risk of civil or criminal
liability of  Landlord,  material  adverse  affect on the Project or any portion
thereof or Landlord's interest therein or unreasonable interference with the use
of another tenant's space or the operation of the Building, and (b) in any other
case, if such failure  continues  after notice and beyond all  applicable  grace
periods  provided in this Lease,  and  thereafter  such  failure is not remedied
within  10 days  after a second  notice to Tenant  (in  which the  Curing  Party
notifies  Tenant  that the  Curing  Party will  undertake  such  performance  at
Tenant's expense).  If a Curing Party performs any of Tenant's obligations under
this Lease pursuant to the immediately  preceding sentence,  Tenant shall pay to
such Curing Party (as Additional Charges) the reasonable costs thereof, together
with interest at the Interest Rate from the date such costs were incurred by the
Curing Party until paid by Tenant,  within 30 days after  receipt by Tenant of a
detailed statement as to the amounts of such costs. "Prime Rate" means an annual
interest  rate  equal to the prime or base rate from time to time  announced  by
Citibank,  N.A.  (or, if  Citibank,  N.A.  shall not exist,  such other New York
Clearing House Association  member bank, as shall be designated by Landlord in a
notice to Tenant) to be in effect at its principal office in New York, New York.
"Interest  Rate"  means an annual  interest  rate equal to the lesser of (i) the
Prime Rate plus 2% or (ii) the maximum rate permitted by Law.





                                   ARTICLE 5
                           Assignment and Subletting

     5.01 Assignment;  Etc. (a) Subject to Section 5.02,  neither this Lease nor
the term and estate  hereby  granted,  nor any part hereof or thereof,  shall be
assigned,  mortgaged,  pledged, encumbered or otherwise transferred, and neither
the Premises,  nor any part thereof,  shall be subleased or be encumbered in any
manner by reason of any act or omission  on the part of Tenant,  and no rents or
other sums  receivable  by Tenant  under any  sublease of all or any part of the
Premises shall be assigned or otherwise encumbered, without the prior consent of
Landlord.  The  transfer  of more than 50% of the  stock,  partnership  or other
beneficial  ownership  interests in Tenant or in any entity  which,  directly or
indirectly  controls  Tenant  shall  be  deemed  an  assignment  of this  Lease;
provided,  that the transfer of any such stock,  partnership or other  ownership
interests  shall not  constitute  an  assignment  of this  Lease if such  stock,
partnership  or other  ownership  interests are listed on a national  securities
exchange (as defined in the  Securities  Exchange Act of 1934, as amended) or is
traded in the "over the counter" market with quotations reported by the National
Association of Securities Dealers. No assignment or other transfer of this Lease
and the term and estate hereby granted,  and no subletting of all or any portion
of the Premises shall relieve Tenant of its liability under this Lease or of the
obligation to obtain Landlord's prior consent in accordance with Section 5.03(b)
to any further  assignment,  other  transfer  or  subletting  (unless  otherwise
permitted by this Lease).  Any attempt to assign this Lease or sublet all or any
portion of the  Premises in  violation of this Article 5 shall be null and void.

     (b) Notwithstanding Section 5.01(a),  without the consent of Landlord, this
Lease may be  assigned  to (i) an entity  created by merger,  reorganization  or
recapitalization  of or with Tenant or (ii) a purchaser of all or  substantially
all of  Tenant's  assets;  provided,  in the case of both  clause (i) and clause
(ii),  that (A) Landlord shall receive  contemporaneously  therewith a notice of
such  assignment  from Tenant,  (B) the assignee  assumes by written  instrument
substantially  in the form  attached  to this Lease as Exhibit K all of Tenant's
obligations  under this Lease (but,  in the case of clause  (i),  the same shall
only  be  necessary  if  Tenant  shall  not be the  surviving  entity),  (C) the
avoidance of any obligations under this Lease is not the primary purpose of such
assignment,  and (D) the assignee shall have, immediately after giving effect to
such  assignment,  an aggregate net worth  (computed in accordance with GAAP) of
not less  than  95% of the  aggregate  net  worth  (as so  computed)  of  Tenant
immediately prior to such assignment.

     (c)  Notwithstanding  Section  5.01(a),  without the  consent of  Landlord,
Tenant may assign  this  Lease or sublet all or any part of the  Premises  to an
Affiliate of Tenant; provided, that (i) Landlord shall receive contemporaneously
therewith a notice of such  assignment or sublease from Tenant;  and (ii) in the
case of any such  assignment,  (A) the avoidance of any  obligations  under this
Lease  is not the  primary  purpose  of such  assignment,  and (B) the  assignee
assumes by written  instrument  substantially in the form attached to this Lease
as Exhibit K all of Tenant's obligations under this Lease. "Affiliate" means, as
to any designated  person or entity,  any other person or entity which controls,
is controlled by, or is under common  control with,  such  designated  person or
entity.  "Control" (and with  correlative  meaning,  "controlled  by" and "under
common control with") means ownership or voting control, directly or indirectly,
of 25% or more of the voting stock,  partnership  interests or other  beneficial
ownership interests of the entity in question.

     (d)  Notwithstanding  anything to the contrary contained in this Article 5,
Tenant  shall have the right,  without  being  required to obtain the consent of
Landlord,  to permit  portions of the Premises  not  exceeding  50,000  rentable
square  feet in the  aggregate  at any  one  time  to be  used  under  so-called
"desk-sharing"   arrangements   by  service   providers  or  other   independent
contractors who use such space primarily in connection with Tenant's business.

     (e) Notwithstanding Section 5.01(a), and without limiting the generality of
Section 5.01(c), without the consent of Landlord, Tenant may sublease the entire
22nd floor of the Building to Equitable Real Estate Investment Management,  Inc.
("EREIM");  provided, that Landlord shall receive contemporaneously  therewith a
notice of such  sublease.  On the date of this Lease,  EREIM is an  Affiliate of
Tenant. Notwithstanding Section 5.01(a), without the consent of Landlord, Tenant
may engage in a transaction  which results in EREIM no longer being an Affiliate
of Tenant; provided, that Landlord shall receive  contemporaneously  therewith a
notice of such transaction.  If Tenant engages in a transaction which results in
EREIM no longer being an Affiliate of Tenant and, at such time, no tenant (other
than  Tenant or any  Affiliate  of Tenant)  leases 6 or more floors of floors 23
through 29, then Tenant  shall have the right to require by notice to  Landlord,
that Landlord, at Tenant's reasonable expense, reprogram the passenger elevators
in the elevator  bank serving  floors 15-22 and the  passenger  elevators in the
elevator bank serving floors 23 - 29 so that the 22nd floor shall  thereafter be
serviced by the elevator bank serving floors 23 - 29. Nothing  contained in this
Section 5.01(e) shall be construed as a consent by Landlord to any subletting or
assignment  by EREIM,  to the extent  that such  consent is  otherwise  required
pursuant to this Article 5.





     5.02 Landlord's  Right of First Offer. (a) If Tenant desires to assign this
Lease or sublet  all or part of the  Premises  (other  than in  accordance  with
Sections  5.01(b),  (c) or (d)), Tenant shall give to Landlord notice ("Tenant's
Offer Notice") thereof, specifying (i) in the case of a proposed subletting, the
location  of the space to be sublet  (the  "Sublet  Space")  and the term of the
subletting of such Sublet Space (the "Sublet  Term"),  (ii) (A) in the case of a
proposed  assignment,  Tenant's  good faith  offer of the  consideration  Tenant
desires to receive or pay for such  assignment  or (B) in the case of a proposed
subletting,  Tenant's  good faith offer of the fixed  annual  rent which  Tenant
desires to receive for such proposed subletting  (assuming that a subtenant will
pay for Taxes,  Operating  Expenses  and  electricity  in the same  manner,  and
utilizing  the same base year or base  amount,  as Tenant pays for such  amounts
under  this  Lease)  (the  "Sublet  Rent"),  (iii)  in the  case  of a  proposed
subletting  involving a partial  floor,  whether or not Tenant intends to demise
separately the subleased  space or provide an allowance to the subtenant for the
purpose of  performing  such work and (iv) the proposed  assignment  or sublease
commencement  date. 

     (b) Landlord (or its designee) shall have the option, exercisable by notice
("Landlord's  Acceptance  Notice") given to Tenant on or before the date that is
15 days after the giving of the  applicable  Tenant's  Offer Notice (time of the
essence) (i) in the case of a proposed  assignment,  to have this Lease assigned
to it or (ii) in the case of a proposed  sublease,  to sublet  the Sublet  Space
from Tenant. 

     (c) If Landlord exercises its option under Section 5.02)(b)(i) to have this
Lease assigned to it (or its  designee),  then Tenant shall assign this Lease to
Landlord  (or  Landlord's  designee)  by an  assignment  in form  and  substance
reasonably  satisfactory  to Landlord  and  Tenant,  effective  on the  proposed
assignment  commencement date specified in the applicable Tenant's Offer Notice.
On such  effective  date,  the  appropriate  party  shall  pay to the  other the
consideration for such assignment specified in Tenant's Offer Notice.

     (d) If Landlord  exercises its option under Section  5.02(b)(ii)  to sublet
the Sublet Space,  then (i) during the Sublet Term,  Tenant shall be relieved of
all of Tenant's  obligations  under this Lease with respect to the Sublet Space,
other than Tenant's  obligation to pay Rent, (ii) during the Sublet Term, if and
to the extent  that  Landlord or its  designee  (as  subtenant)  fails to pay to
Tenant any amount that such  subtenant  is  required to pay with  respect to the
Sublet  Space,  then Tenant  shall have the right to credit such amount  against
Tenant's Rent  obligations  under this Lease and (iii) such sublease to Landlord
or its  designee  (as  subtenant)  shall  be in form  and  substance  reasonably
satisfactory  to  Landlord  and  Tenant,  at the Sublet Rent as set forth in the
applicable  Tenant's Offer Notice (provided,  that if the Sublet Rent is greater
than  Tenant's  Qualified  Sublet  Cost,  then the rent which  Landlord  (or its
designee)  is required to pay to Tenant in respect of the Sublet  Space shall be
reduced by an amount equal to 50% of the amount by which the Sublet Rent exceeds
Tenant's Qualified Sublet Cost; for purposes of this Section 5.02(d),  "Tenant's
Qualified  Sublet  Cost" for any Sublet  Space  subleased  to  Landlord  (or its
designee) in accordance  with this Section 5.02 means the sum of (v) the portion
of the annual Fixed Rent which is  attributable  to such Sublet Space,  plus (w)
the amount of any reasonable  brokerage  commissions  and reasonable  legal fees
paid by Tenant in  connection  with the sublease  amortized  on a  straight-line
basis over the Sublet Term with interest at the Prime Rate,  plus (x) 1/2 of any
costs incurred by Tenant for  improvements to such Sublet Space within 12 months
prior to the sublease  commencement  date (as evidenced by paid invoices),  plus
(y) the expenses,  if any, which Tenant is required to reimburse Landlord for in
accordance with Section  5.02(d)(E)(3) or the amount of any allowance  specified
in Tenant's  Offer Notice to be paid by Tenant to the  subtenant for the purpose
of performing the work to separately demise the Sublet Space, plus (z) all other
out-of-pocket  costs incurred by Tenant in connection with such  sublease),  and
for the Sublet Term  (commencing  on the  proposed  sublease  commencement  date
specified in the applicable Tenant's Offer Notice), and: (A) shall be subject to
all of the terms and  conditions of this Lease except such as are  irrelevant or
inapplicable,  and except as  otherwise  expressly  set forth to the contrary in
this Section  5.02(d);  (B) shall be upon the same terms and conditions as those
contained in Tenant's  Offer Notice and otherwise on the terms and conditions of
this Lease (including,  without  limitation,  an indemnity from Landlord (or its
designee)   (as   subtenant)  in  favor  of  the  Tenant   Indemnified   Parties
substantially in the form of Section 6.12(b)),  except such as are irrelevant or
inapplicable and except as otherwise expressly set forth to the contrary in this
Section  5.02(d);  (C) shall permit the  sublessee,  without  Tenant's  consent,
freely to assign such  sublease or any interest  therein or to sublet all or any
part of the Sublet Space (provided,  that (I) if (1) the Sublet Space includes a
partial floor and (2) on the  commencement  date of any such sublease and on the
commencement  date of any further  sublease by such  sublessee or the  effective
date  of  any  assignment  by  such  sublessee,  Tenant  and/or  any  Affiliated
subtenants of Tenant occupies the balance of such floor,  then any such assignee





or subtenant of such partial floor shall (x) use the  applicable  space for only
uses permitted  under this Lease and (y) not be a Competitor and (II) if (1) the
Sublet Space includes a full floor and (2) on the commencement  date of any such
sublease and on the commencement  date of any further sublease by such sublessee
or the effective  date of any  assignment by such  sublessee,  Tenant and/or any
Affiliated  subtenants  of  Tenant  occupies  not less  than  50% of the  floors
included in the elevator  bank which  services  such full floor  included in the
Sublet  Space,  then any such assignee or subtenant of such full floor shall not
be a  Competitor);  "Competitor"  means any  company  that is (aa)  known by the
general public  primarily as an insurance  company or (bb) engaged  primarily in
the insurance business; (D) shall provide that any assignee or further subtenant
of Landlord or its designee may, at the election of Landlord,  make alterations,
decorations and  installations  in the Sublet Space or any part thereof,  any or
all of which may be removed, in whole or in part, by such assignee or subtenant,
at its option,  prior to or upon the  expiration  or other  termination  of such
sublease,  provided,  that (1) such assignee or subtenant, at its expense, shall
repair any damage caused by such removal and (2) if the Sublet Term is less than
substantially  all of the remaining Term (i.e., such Sublet Term is scheduled to
expire, assuming all sublease extension options are exercised, prior to the date
that is 1 year  prior to the last day of the  Term,  which  shall be  deemed  to
exclude the Renewal Term if the Renewal  Option  shall not have been  previously
exercised),  then any such alterations and installations  shall require Tenant's
consent,  not to be  unreasonably  withheld,  unless such  assignee or subtenant
agrees to remove same at the end of the Sublet Term and return the Sublet  Space
to  substantially  its  condition  before the  commencement  of the Sublet Term,
ordinary  wear  and tear  excepted,  in which  event  no such  consent  shall be
required  and  (3) if the  Sublet  Space  involves  a  partial  floor,  no  such
alterations or installations  shall (except to the extent required by applicable
Laws or, if not  required by  applicable  Laws,  except to a de minimis  extent)
adversely impact the remainder of such floor or any other floor of the Premises;
and (E) shall provide that (1) the parties to such sublease expressly negate any
intention  that any estate  created under such sublease be merged with any other
estate held by either of said  parties,  (2) any  assignment  or  subletting  by
Landlord or its designee (as the  subtenant)  may be for any purpose or purposes
that  Landlord  shall deem  appropriate  (but subject to the proviso in Clause C
above),  (3) on the  commencement  date of such  sublease  or on such other date
specified in Tenant's  Offer Notice,  Tenant shall pay to Landlord any allowance
specified in Tenant's  Offer Notice for the purpose of  separately  demising the
Sublet Space or Landlord,  at Tenant's expense, may make such alterations as may
be required or deemed  necessary  by  Landlord to demise  separately  the Sublet
Space (unless,  as set forth in Tenant's Offer Notice,  Tenant did not intend to
demise separately the Sublet Space) and to comply with any Laws relating to such
demise,  and (4) at the  expiration of the term of such  sublease,  Tenant shall
accept  the  Sublet  Space in its then  existing  condition,  subject to (x) the
obligations of the sublessee to make such repairs thereto as may be necessary to
preserve  such  space in good  order and  condition  and (y) any  obligation  to
restore the Sublet Space under Clause (D)(2) above,  and if such sublessee fails
to make such repairs or perform such  restoration,  Landlord  shall  perform the
same.

     (e) If the Sublet Rent (on a per  rentable  square foot basis) as specified
in  Tenant's  Offer  Notice  is equal to or  exceeds  the  Fixed  Rent (on a per
rentable  square foot basis)  payable by Tenant at the time such Tenant's  Offer
Notice is given,  Tenant shall not be permitted to sublet the applicable  Sublet
Space to a third party at a Sublet Rent which is less (on a per rentable  square
foot basis) than such Fixed Rent  without  complying  once again with all of the
provisions of this Section 5.02 and re-offering such Sublet Space to Landlord at
such lower Sublet  Rent.  If Tenant  offered in Tenant's  Offer Notice to assign
this Lease to Landlord upon  Landlord's  payment of the  consideration  for such
assignment specified therein, Tenant shall not be permitted to assign this Lease
to a third party where  Tenant pays  consideration  to such third party for such
assignment  without  complying  once  again with all of the  provisions  of this
Section  5.02 and  re-offering  to assign  this Lease to  Landlord  and pay such
consideration to Landlord.

     5.03  Assignment  and  Subletting  Procedures.  (a) If Tenant  delivers  to
Landlord a Tenant's Offer Notice with respect to any proposed assignment of this
Lease or  subletting of all or part of the Premises and Landlord does not timely
exercise any of its options under Section 5.02, and Tenant thereafter desires to
assign this Lease or sublet the Sublet  Space set forth in such  Tenant's  Offer
Notice,  Tenant may notify Landlord (a "Transfer Notice") of such desire,  which
notice shall be  accompanied by a statement  setting forth in reasonable  detail
the identity of the proposed  assignee or subtenant,  the nature of its business
and its  proposed use of the  Premises.  Tenant shall have the right to give the
Transfer   Notice  with  respect  to  any  proposed   assignment  or  subletting
simultaneously  with  Tenant's  giving of Tenant's  Offer  Notice  with  respect
thereto. 





     (b) If Tenant gives a Transfer Notice,  Landlord's  consent to the proposed
assignment or sublease  shall not be withheld,  provided  that: (i) the proposed
assignee or subtenant  states its intention to use the Premises in a manner that
(A) is in keeping with or better than the then  standards of the  Building,  and
(B) is  limited  to the use  expressly  permitted  under  this  Lease;  (ii) the
proposed assignee or subtenant is a reputable person or entity;  (iii) except in
the case of Qualifying Transactions,  neither the proposed assignee or sublessee
is  then  a  tenant  or an  occupant  of any  part  of the  Building  (but  this
restriction  shall apply only if Landlord  then has, or within the next 6 months
is scheduled to have,  comparable  vacant  space in the Building  available  for
lease  for a  comparable  term);  and  (iv)  except  in the  case of  Qualifying
Transactions,  the  proposed  assignee  or  sublessee  is not a person with whom
Landlord is then actively  negotiating  to lease space in the Building (but this
restriction  shall apply only if Landlord  then has, or within the next 6 months
is scheduled to have,  comparable  vacant  space in the Building  available  for
lease  for a  comparable  term)  (it being  understood  that a letter  from such
proposed  assignee or subtenant stating that such person is no longer interested
in negotiating  with Landlord to lease space in the Building shall be sufficient
evidence  that  Landlord is no longer  actively  negotiating  with such  person;
provided,  that  neither  Tenant nor  Tenant's  broker  shall have  induced such
proposed assignee or subtenant to send such letter).

     (c) If Landlord  consents to a proposed  assignment  or sublease and Tenant
fails to execute  and  deliver the  assignment  or  sublease  to which  Landlord
consented  within 270 days after the giving of such  consent,  then Tenant shall
again comply with Section 5.03(a) before  assigning this Lease or subletting all
or the relevant  part of the  Premises. 

     (d) If Landlord fails to grant or deny consent to a proposed  assignment or
subletting within 15 days after receipt of the relevant Transfer Notice,  Tenant
shall have the right to give a reminder  notice to Landlord  (which notice shall
state that Landlord shall be deemed to have consented to the proposed assignment
or  subletting  if  Landlord  fails to grant or deny  consent  thereto  within 1
Business  Day) and if Landlord  fails to grant or deny consent to such  proposed
assignment or subletting  within one Business Day after receipt of such reminder
notice,  Landlord  shall be  deemed  to have  consented  to such  assignment  or
subletting.  Any denial of consent to a proposed  assignment or subletting shall
be  effective  only if  accompanied  by a  statement  that sets  forth in detail
Landlord's reason(s) for denying such consent; provided, that in the case of any
denial of consent by reason of a failure of the  condition  specified in Section
5.03(b)(ii),  Landlord  shall only be required to cite such  Section in order to
comply with this sentence.

     (e) "Qualifying  Transactions" means any of the following: (i) any sublease
of less than  25,000  rentable  square feet  (including  any option or must take
space and any space previously sublet by Tenant to the same subtenant), (ii) any
sublease with an entity with which Tenant then has a material  ongoing  business
relationship  or (iii) any sublease or  assignment if (A) the fair market rental
value (determined as if leased directly by Landlord) of the Sublet Space (or the
Premises in case of an assignment), on a per rentable square foot, net effective
basis is less than (B) the Rent,  on a per rentable  square foot basis,  payable
under this Lease;  provided,  in the case of clause  (iii),  that Tenant pays to
Landlord in monthly  installments an amount equal to 50% of the excess,  if any,
of (x) the fair market rental value of the Sublet Space (or the Premises in case
of an assignment) determined as provided in clause (A) above over (y) (I) in the
case of a sublease,  the rent,  on a per  rentable  square foot,  net  effective
basis,  payable by the subtenant with respect to the Sublet Space or (II) in the
case of an assignment,  the Rent, on a per rentable  square foot basis,  payable
under this Lease, net of any consideration being paid by Tenant to such assignee
for such assignment.  As an example for clause (iii) above, if Tenant desires to
sublet  Sublet Space to a subtenant  for $24 per  rentable  square foot on a net
effective  basis  and  the  fair  market  rental  value  of  such  Sublet  Space
(determined as provided in subclause (A) above) is $30 per rentable  square foot
on a net  effective  basis,  then,  because the fair market rental value of such
Sublet Space ($30 per rentable  square foot) is less than the Rent payable under
this Lease ($36 per rentable  square foot) and the proposed  sublease  rent ($24
per rentable  square foot) is less than such fair market  rental  value,  Tenant
must pay to  Landlord  an amount  equal to 50% of the excess of the fair  market
rental  value of such  Sublet  Space  ($30 per  rentable  square  foot) over the
proposed  sublease rent ($24 per rentable square foot) or $3 per rentable square
foot of such Sublet Space.





     5.04 General Provisions.  (a) If this Lease is assigned,  whether or not in
violation of this Lease,  Landlord may collect  rent from the  assignee.  If the
Premises  or any part  thereof  are sublet or  occupied  by  anybody  other than
Tenant,  whether or not in violation of this Lease,  Landlord may, after default
by Tenant in the  payment of any sum payable  under this Lease after  notice and
beyond  applicable  grace  periods,  collect rent from the subtenant or occupant
(but not in excess of the total amount of such monetary defaults by Tenant which
exist at such  time).  In  either  event,  Landlord  may  apply  the net  amount
collected  against  Rent,  but no  such  assignment,  subletting,  occupancy  or
collection shall be deemed a waiver of any of the provisions of Section 5.01(a),
or the acceptance of the assignee, subtenant or occupant as tenant, or a release
of Tenant from the performance of Tenant's  obligations under this Lease.

     (b) No  assignment  or  transfer  shall be  effective  until  the  assignee
delivers to Landlord (i) evidence that the assignee,  as Tenant  hereunder,  has
complied with the  requirements of Sections 7.02 and 7.03, and (ii) an agreement
substantially  in the form  attached  to this  Lease as  Exhibit K  whereby  the
assignee assumes Tenant's  obligations  under this Lease,  which agreement shall
only be required in the case of an actual  assignment,  but not in the case of a
deemed  transfer  pursuant  to the  second  sentence  of  Section  5.01(a).

     (c) Notwithstanding any assignment or transfer, whether or not in violation
of this Lease, and  notwithstanding  the acceptance of any Rent by Landlord from
an assignee,  transferee, or any other party, the original named Tenant and each
successor  Tenant  shall remain fully liable for the payment of the Rent and the
performance of all of Tenant's other obligations under this Lease. The joint and
several liability of Tenant and any immediate or remote successor in interest of
Tenant  shall not be  discharged,  released  or  impaired  in any respect by any
agreement  made  by  Landlord  extending  the  time  to  perform,  or  otherwise
modifying,  any of the  obligations of Tenant under this Lease, or by any waiver
or failure of Landlord to enforce any of the  obligations  of Tenant  under this
Lease;  provided,  that (i) in the case of any  modification  of this Lease made
after the date of an  assignment or other  transfer of this Lease by Tenant,  if
such modification increases or enlarges the obligations of Tenant or reduces the
rights of Tenant,  then the Tenant named herein and each respective  assignor or
transferor that has not consented to such modification shall not be liable under
or bound by such increase,  enlargement or reduction (but shall continue  liable
under this Lease as though  such  modification  were never made) and (ii) in the
case of any  waiver by  Landlord  of a specific  obligation  of an  assignee  or
transferee  of  Tenant,  or an  extension  of  time  to  perform  in  connection
therewith,  such waiver  and/or  extension  shall also be deemed to apply to the
immediate and remote assignors or transferors of such assignee or transferee. If
this Lease shall have been assigned by the Initially Named Tenant (other than to
an Affiliate of the Initially  Named Tenant),  Landlord shall give the initially
named Tenant (or any entity which,  pursuant to Section 5.01(b) above,  directly
or  indirectly  succeeds to the  interest of the  initially  named  Tenant) (the
"Initially Named Tenant"), a copy of each notice of default given by Landlord to
the then current  tenant under this Lease.  Except if Landlord shall execute and
deliver a written  instrument  releasing  the  Initially  Named  Tenant from any
further  liability  under  this  Lease,  Landlord  shall  not have any  right to
terminate  this Lease,  or otherwise to exercise  any of  Landlord's  rights and
remedies  hereunder  (other than Landlord's  self-help remedy in accordance with
Section 4.08(a)),  after a default by such current tenant,  unless and until (A)
Landlord  shall  have made a demand on the then  tenant to cure the  default  in
question,  (B) the Initially  Named Tenant receives a copy of the default notice
in question,  and (C) the Initially  Named Tenant has an  opportunity  to remedy
such default within the time periods set forth in this Lease (such time periods,
with respect to the Initially  Named  Tenant,  being deemed to run from the date
that Landlord gives such Initially  Named Tenant a copy of the default notice in
question);  provided,  that this  sentence  shall not be  applicable if the then
current  tenant under this Lease is an Affiliate of the Initially  Named Tenant.
Landlord shall accept timely  performance  by the Initially  Named Tenant of any
term,  covenant,  provision  or  agreement  contained  in this Lease on the then
current  tenant's  part to be  observed  and  performed  with the same force and
effect as if performed by the then current tenant (but only if such then current
tenant is not an Affiliate of the  Initially  Named  Tenant).  If the  Initially
Named Tenant shall cure the default by such  current  tenant,  or if the default
shall be incurable  (such as  bankruptcy),  and  Landlord or the current  tenant
seeks to terminate  this Lease,  then the Initially  Named Tenant shall have the
right to enter into a new lease  with  Landlord  upon all of the then  executory
terms of this Lease and to resume  actual  possession  of the  Premises  for the
unexpired  balance  of the  Term;  provided,  that  this  sentence  shall not be
applicable  if the then  current  tenant under this Lease is an Affiliate of the
Initially  Named Tenant

     (d) Each  subletting  by Tenant shall be subject to the  following:  (i) No
subletting  shall be for a term  (including  any  renewal or  extension  options
contained in the  sublease,  unless  conditioned  upon the exercise by Tenant of
Tenant's  renewal option  pursuant to the terms of this Lease) ending later than
one day prior to the Expiration  Date.  (ii) No sublease shall be valid,  and no





subtenant shall take possession of the Premises or any part thereof, until there
has been  delivered  to  Landlord,  both  (A) an  executed  counterpart  of such
sublease,  the form of which shall comply with the applicable provisions of this
Article 5 and a certificate of insurance  evidencing that there is in full force
and effect the insurance  required by Section  7.02(a)  covering the subtenant's
personal property,  which insurance includes the waiver of subrogation  required
pursuant to Section 7.03.  (iii) Each sublease  shall provide that it is subject
and subordinate to this Lease, and that in the event of termination,  reentry or
dispossess by Landlord under this Lease  Landlord may, at its option,  take over
all of the  right,  title and  interest  of  Tenant,  as  sublessor,  under such
sublease,  in which case such subtenant shall attorn to Landlord pursuant to the
then executory  provisions of such  sublease,  except that Landlord shall not be
liable  for,  subject  to or  bound  by any  item of the  type  that a  Superior
Mortgagee  is not so  liable  for,  subject  to or  bound  by in the  case of an
attornment  by a subtenant  to a Superior  Mortgagee  pursuant to Paragraph 3 of
Exhibit B attached  to Exhibit M annexed  hereto.  (iv)  Notwithstanding  clause
(iii)  above,  provided  Tenant is not then in default  under  this Lease  after
notice  and beyond  applicable  grace  periods,  with  respect  to any  sublease
(including  a  further  sublease  by a  subtenant  of  Tenant  (a  "Second  Tier
Sublease") but not a further  subletting) other than pursuant to Section 5.01(c)
or 5.01(e),  to which  Landlord has given its consent or is deemed to have given
its  consent  pursuant  to the terms of this  Article 5 and which (A) is for not
less than 20,000  rentable  square feet of Office Space (50,000  rentable square
feet in the case of a Second Tier Sublease), (B) consists of either (x) not less
than 100,000  rentable square feet of Office Space or (y) contiguous space which
includes  the highest or lowest  floor then  comprising  the Office  Space or is
contiguous to another floor that has, in substantial part, been sublet by Tenant
and with  respect to which  Landlord  has  executed  and  delivered  one or more
non-disturbance   and   attornment   agreements   hereunder   with   respect  to
substantially  all of such floor, (C) provides for a rental which,  after taking
into account any free rent periods,  credits, offsets or deductions to which the
subtenant  may be  entitled  thereunder,  is  equal  to or in  excess  (on a per
rentable square foot basis) of the Fixed Rent and recurring  Additional  Charges
payable  hereunder  by  Tenant  with  respect  to such  space  from time to time
throughout  the Term (or if less (on a per rentable  square foot basis) than the
Fixed Rent and recurring Additional Charges payable hereunder by Tenant, if such
subtenant agrees, in the  non-disturbance and attornment  agreement  hereinafter
referred to, that such rental will automatically and without condition become so
equal, if, as and when the attornment  provided for in such  non-disturbance and
attornment  agreement  becomes  effective  between  Landlord  and the  subtenant
following  the  termination  of this Lease),  (D) consists of space that will be
demised  separately  from the remainder of the Premises in  accordance  with all
applicable Laws and (E) provides for other obligations of the subtenant at least
substantially  identical to the  obligations  of Tenant under this Lease (but in
compliance, to the extent applicable,  with Section 8.24 below), Landlord shall,
at Tenant's request, execute and deliver to such subtenant a non-disturbance and
attornment agreement  substantially in the form of Exhibit B attached to Exhibit
M annexed hereto,  modified as necessary to reflect that the  non-disturbance is
being granted by Landlord rather than by a Superior Mortgagee, provided and upon
condition  that (1) in the case of any subtenant  that is a partnership  that is
not publicly  traded,  such  subtenant  shall have had net income  determined in
accordance  with GAAP (i.e.,  the excess of all gross revenues and fees over all
expenses  (including,  without  limitation,  all partnership  debt service),  as
determined by a firm of independent  certified  public  accountants)  for the 12
month period ending on the last day of the most recently ended fiscal quarter of
such subtenant  equal to or in excess of the product of (I) 5 multiplied by (II)
the  greater of (aa) the Rent  payable by Tenant  with  respect to the  sublease
space for the 12 month  period  commencing  on the  sublease  commencement  date
(determined  without giving effect to any credits,  offsets,  abatements or free
rent  periods)  and (bb) all sums  payable  under the sublease for such 12 month
period  (as so  determined),  (2) in the  case  of any  subtenant  other  than a
subtenant  described in clause (1) above,  Tenant has  furnished  to  Landlord's
reasonable   satisfaction  proof  that  the  subtenant  has  a  financial  worth
sufficient to timely  fulfill its  obligations  under such sublease as a primary
tenant of Landlord (and not as a subtenant of Tenant), including any increase in
such financial  obligations  which may become effective  pursuant to this clause
(iv),   and  (3)  the   subtenant   executes  and  delivers  to  Landlord   such
non-disturbance  and  attornment  agreement.  Notwithstanding  anything  to  the
contrary  set forth in this clause  (iv),  any  non-disturbance  and  attornment
agreement delivered by Landlord pursuant to this clause (iv) shall,  pursuant to
this Lease, be conditional and by its terms expressly contain the condition such
that,  in the event of any  termination  of this  Lease  other than by reason of
Tenant's default (e.g., by reason of a casualty  pursuant to Section 7.05), then
any non-disturbance and attornment agreement to a subtenant shall, automatically
and without further act of the parties,  terminate and be of no further force or
effect from and after the applicable  termination date;  provided,  that if (AA)
this Lease is terminated with respect to less than all of the Premises,  or (BB)
Tenant  pursuant to Article 9 exercises the Renewal  Option with respect to less
than all of the Premises, only such non-disturbance and attornment agreements to
subtenants  who  sublease  any of such space with respect to which this Lease is
terminated or not renewed, as the case may be, shall,  automatically and without





further act of the parties,  terminate and be of no further force or effect from
and after the applicable  termination date or the day preceding the commencement
of the Renewal  Term,  as the case may be.  Anything  contained  in this Section
5.04(d)(iv)  to the contrary  notwithstanding,  with respect to any sublease for
which Landlord has delivered a non-disturbance and attornment agreement pursuant
hereto,  no  provision  of any such  sublease  providing  in  substance  for the
exculpation from personal  liability of the partners of a partnership  subtenant
shall be binding on Landlord unless such  subtenant,  on the date the attornment
provided for in such  non-disturbance and attornment agreement becomes effective
between Landlord and such subtenant,  shall post with Landlord,  as security for
such subtenant's obligations under its sublease, cash or a clean,  unconditional
and  irrevocable   letter  of  credit  (in  form  and  from  a  bank  reasonably
satisfactory  to Landlord) in either case in an amount equal to the annual fixed
rent and  recurring  charges  (without  regard  to any  abatements,  credits  or
offsets) payable by such subtenant to Landlord at such time (such security to be
increased  from  time to time to  reflect  increases  in  such  fixed  rent  and
recurring  charges).  Any  subletting  by  Tenant to an  Affiliate  of Tenant in
accordance  with Section  5.01(c) or 5.01(e) and any subletting by Tenant to the
Agency or by the Agency to Tenant in  accordance  with  Section  12.01 shall not
constitute a subletting tier for purposes of this Section 5.04(d)(iv).

     (e) Each  sublease  shall  provide  that the  subtenant  may not assign its
rights  thereunder or further  sublet the space  demised under the sublease,  in
whole or in part,  without Landlord's consent in accordance with Section 5.03(b)
and without  complying  with all of the terms and  conditions of this Article 5,
including,  without  limitation,  Section 5.05,  which Article 5 for purposes of
this Section 5.04(e) shall be deemed to be  appropriately  modified to take into
account that the  transaction  in question is an assignment of the sublease or a
further subletting of the space demised under the sublease,  as the case may be.


     (f) Tenant shall not publicly advertise the availability of the Premises or
any portion  thereof as sublet space or by way of an  assignment  of this Lease,
without  first  obtaining  Landlord's  consent,   which  consent  shall  not  be
unreasonably  withheld  or  delayed;  provided,  that  Tenant  shall in no event
publicly  advertise  the rental rate or any  description  of such  rental  rate.
Notwithstanding  the  foregoing,  Landlord's  consent  shall not be required for
Tenant to list the Premises or any portion thereof with brokers or for Tenant or
such  brokers to  distribute  flyers  with  respect to the  availability  of the
Premises  or any  portion  thereof,  subject  to the  proviso  set  forth in the
preceding sentence. 

     (g) If this Lease is  assigned  to a  partnership  in  accordance  with the
provisions  of this  Article 5, then the partners of such  partnership  shall be
exculpated from personal  liability for the  obligations of such  partnership as
Tenant  hereunder;  provided,  that (i) in the case of any such assignee that is
not a publicly traded partnership, such assignee shall, as of the effective date
of such  assignment,  have had net income  determined  in  accordance  with GAAP
(i.e.,  the excess of all gross revenues and fees over all expenses  (including,
without  limitation,  all partnership debt service),  as determined by a firm of
independent  certified public accountants) for the 12 month period ending on the
last day of the most recently  ended fiscal quarter of such assignee equal to or
in excess of the product of (A) 5  multiplied  by (B) the Rent payable by Tenant
with  respect  to  the  Premises  for  the 12  month  period  commencing  on the
assignment  commencement date (determined  without giving effect to any credits,
offsets, abatements or free rent periods), (ii) in the case of any such assignee
that is a publicly traded partnership, such assignee has furnished to Landlord's
reasonable  satisfaction  proof that such assignee,  as of the effective date of
such   assignment,   has  financial  worth  sufficient  to  timely  fulfill  its
obligations  under this Lease, and (iii) in all cases,  such assignee shall post
with Landlord cash or a clean,  unconditional  and irrevocable  letter of credit
(in form and from a bank reasonably satisfactory to Landlord) in an amount equal
to the annual Rent payable from time to time by Tenant to Landlord.

     5.05 Assignment and Sublease  Profits.  (a) If the aggregate of the amounts
payable as fixed  rent and as  additional  rent on  account of Taxes,  Operating
Expenses  and  electricity  by a  subtenant  under a sublease of any part of the
Premises  and the  amount of any other  consideration  payable to Tenant by such
subtenant,  whether  received  in a lump-sum  payment or  otherwise  shall be in
excess of Tenant's  Basic Cost  therefor at that time then,  promptly  after the
collection thereof,  Tenant shall pay to Landlord in monthly installments if, as
and when  collected,  as Additional  Charges,  50% of such excess.  Tenant shall
deliver  to  Landlord  within  60  days  after  the end of  each  calendar  year
(including, without limitation, the calendar year in which occurs the expiration
or earlier  termination of this Lease) a statement  specifying  each sublease in
effect  during such calendar year or partial  calendar  year,  the rentable area
demised thereby, the term thereof and a computation in reasonable detail showing
the calculation of the amounts paid and payable by the subtenant to Tenant,  and
by Tenant to Landlord,  with respect to such sublease for the period  covered by
such statement.  Notwithstanding  the foregoing,  if Tenant fails to timely give
any such  statement to Landlord,  such  failure  shall not  constitute a default
under this Lease unless  Landlord  gives  notice to Tenant  after the  foregoing
60-day period and Tenant fails to give such statement to Landlord within 30 days
thereafter.  "Tenant's Basic Cost" for sublet space at any time means the sum of
(i) the portion of the Fixed Rent, Tax Payments and Operating  Payments which is
attributable  to the sublet  space,  plus (ii) the  amount  payable by Tenant on
account of electricity in respect of the sublet space,  plus (iii) the amount of
any costs  reasonably  incurred  by Tenant in making  changes  in the layout and
finish of the sublet space for the subtenant  amortized on a straight-line basis
over the  term of the  sublease  with  interest  plus  (iv)  the  amount  of any
reasonable  brokerage  commissions  and reasonable  legal fees paid by Tenant in
connection with the sublease amortized on a straight-line basis over the term of
the sublease  with  interest,  plus (v) 1/2 of any costs  incurred by Tenant for
improvements  made to the sublet space within 12 months prior to the  subletting
in question (as evidenced by paid  invoices),  plus (vi) any take-over  costs in
excess of any income from any such take-over received by Tenant,  plus (vii) any
contribution for work and/or the subtenant's  moving  expenses,  plus (viii) all
other  out-of-pocket  costs  incurred  by Tenant in  connection  therewith.  All
references  to interest in this  Section  5.05 shall be deemed to be interest at
the Prime  Rate. 

     (b) Upon any assignment of this Lease,  Tenant shall pay to Landlord 50% of
the  consideration  received  by Tenant  for such  assignment,  after  deducting
therefrom  (i)  all  out-of-pocket  expenses  actually  incurred  by  Tenant  in
connection  with such  assignment  (including,  without  limitation,  all of the
expenses referred to in Section 5.05(a), if and to the extent applicable),  plus
(ii)  (without  duplicating  any amounts  deducted  under clause (i)) 1/2 of any
costs incurred by Tenant for improvements  made to the Premises within 12 months
prior to the assignment in question (as evidenced by paid invoices). 

     (c) For the purpose of  determining  whether Tenant is obligated to pay any
amounts  (or how much Tenant is  obligated  to pay) under this  Section  5.05 to
Landlord,   the  current  and  all  previous  (if  any)  sublease   transactions
consummated  within 24 months of the current sublease  transaction and which are
all part of the same  subletting  program  shall be  aggregated,  so as to allow
Tenant to  off-set  all  "losses"  incurred  by Tenant in  connection  with such
transactions against any "profits".

     (d) In no event shall Tenant be required to make any payment to Landlord by
reason of, or in connection  with, any  assignment or subletting,  other than as
expressly set forth in this Section 5.05.





                                    ARTICLE 6
                       Subordination; Default; Indemnity

     6.01  Subordination.  (a) This Lease is  subject  and  subordinate  to each
mortgage (a "Superior  Mortgage") and each underlying lease (a "Superior Lease")
which may now or  hereafter  affect  all or any  portion  of the  Project or any
interest therein;  provided, that (i) in the case of the Indenture, the Superior
Mortgagee under the Indenture,  concurrently  with the execution and delivery of
this Lease by  Landlord  and  Tenant,  shall  have  executed,  acknowledged  and
delivered to Tenant the  non-disturbance  and attornment  agreement  attached to
this Lease as Exhibit M, (ii) in the case of the Ground  Lease (if the  Superior
Lessor  thereunder  shall no longer be Landlord or an  Affiliate of Landlord) or
any other  Superior  Lease which may hereafter  affect all or any portion of the
Project or any  interest  therein,  the  Superior  Lessor  shall have  executed,
acknowledged and delivered a non-disturbance and attornment agreement containing
the same substantive  provisions as those set forth in the form attached to this
Lease as Exhibit M, modified as necessary to reflect that the party granting the
non-disturbance  is a Superior Lessor rather than a Superior Mortgagee and (iii)
in the case of any  Superior  Mortgage  which may  hereafter  affect  all or any
portion  of  the  Project  or  any  interest  therein,  the  Superior  Mortgagee
thereunder  shall  have  executed,   acknowledged  and  delivered  to  Tenant  a
non-disturbance  and  attornment   agreement  containing  the  same  substantive
provisions  as those set forth in the form  attached to this Lease as Exhibit O.
Notwithstanding  anything contained in this Section 6.01(a) to the contrary,  if
any such  Superior  Lessor or  Superior  Mortgagee  executes,  acknowledges  and
delivers to Tenant a non-disturbance and attornment agreement in the form herein
required,  and  Tenant  either  fails or refuses to  execute  and  deliver  such
agreement  within 20 days after delivery of such agreement to Tenant,  then this
Lease shall  automatically  and without  further act be deemed to be subject and
subordinate to such Superior Lease or Superior Mortgage, as the case may be, and
such  non-disturbance  and  attornment  agreement  shall then be deemed to be in
effect with respect to such Superior Lease or Superior Mortgage, as the case may
be. If the foregoing conditions are satisfied, Tenant shall execute, acknowledge
and deliver such  instrument  as may be  reasonably  requested  by  Landlord,  a
Superior Lessor or Superior Mortgagee to evidence the subordination described in
this Section  6.01(a),  but no such  instrument  shall be necessary to make such
subordination  effective.  Tenant  shall  execute  any  amendment  of this Lease
requested by a Superior  Mortgagee or a Superior Lessor (other than the Superior
Lessor under the Ground Lease so long as such Superior  Lessor is Landlord or an
Affiliate of Landlord),  provided such amendment  shall not reduce or extend the
Term,  increase the Rent,  reduce the area of the  Premises,  increase  Tenant's
obligations  or decrease  Tenant's  rights  under this Lease (other than to a de
minimis extent) or decrease Landlord's obligations or increase Landlord's rights
under this Lease  (other than to a de minimis  extent).  Any  dispute  under the
preceding sentence shall be determined by arbitration in accordance with Section
8.09. In the event of the  enforcement  by a Superior  Mortgagee of the remedies
provided  for  by law or by  such  Superior  Mortgage,  or in the  event  of the
termination  or expiration  of a Superior  Lease,  Tenant,  upon request of such
Superior Mortgagee,  Superior Lessor or any person succeeding to the interest of
such mortgagee or lessor (each,  a "Successor  Landlord"),  shall  automatically
become  the tenant of such  Successor  Landlord  without  change in the terms or
provisions of this Lease (it being  understood  that Tenant shall, if requested,
enter into a new lease on terms identical to those in this Lease).  Upon request
by such  Successor  Landlord,  Tenant shall execute and deliver an instrument or
instruments,  reasonably  requested by such Successor  Landlord,  confirming the
attornment  provided for herein,  but no such  instrument  shall be necessary to
make such  attornment  effective.  The lessor under a Superior Lease is called a
"Superior  Lessor"  and the  mortgagee  under a  Superior  Mortgage  is called a
"Superior Mortgagee". 

     (b) Without  limiting the  generality of this Section  6.01,  this Lease is
subject and  subordinate  to (i) a certain  Superior  Lease,  dated February 25,
1959, between Martha F. Keeping,  as lessor,  and 91078  Corporation,  as lessee
(the "Ground  Lease"),  a memorandum  of which was recorded in the office of the
Register  of the  City  of New  York,  County  of New  York  in  Liber  5068  of
Conveyances,  Page 489, and (ii) a certain Mortgage  Spreader and  Consolidation
Agreement and Trust Indenture dated as of March 20, 1984 (the  "Indenture") made
between O&Y Equity Corp., Olympia & York Holdings Corporation,  FAME Associates,
Olympia & York 2 Broadway  Land  Company and  Olympia & York 2 Broadway  Company
(collectively "Companies"), as mortgagor, and Nationsbank of Tennessee, N.A. (as
successor to  Manufacturers  Hanover Trust Company),  as Trustee,  as mortgagee.
Section 6.6D(1) and Section 6.6D(3) of the Indenture provide as follows: "D. The
Companies will not: "(1) receive or collect, or permit the receipt or collection
of, any rental or other  payments under any Lease more than one month in advance
of the  respective  periods in respect of which they are to accrue,  except that
(i) in  connection  with  the  execution  and  delivery  of any  Lease or of any





amendment to any Lease,  rental payments hereunder may be collected and received
in advance in an amount not in excess of three  months'  rent  and/or a security
deposit may be required  thereunder  in an amount up to any amount  permitted by
law (provided  that such deposits are maintained in accordance  with  applicable
law) and (ii) the  Companies  may  receive  and  collect  escalation  charges in
accordance  with the terms of each  Lease;"  "(3) enter into any Lease that does
not contain terms to the effect as follows:  (a) the Lease and the rights of the
tenants thereunder shall be subject and subordinate to the rights of the Trustee
under this Indenture;  (b) the Lease has been assigned as collateral security by
the  landlord  thereunder  to the  Trustee  under  this  Indenture  but that the
landlord  thereunder  is  entitled  to receive  and collect all rental and other
payments  thereunder  unless  and until  contrary  notice is  received  from the
Trustee; (c) in the case of any foreclosure  hereunder,  the rights and remedies
of the tenant in respect of any obligations of any successor landlord thereunder
shall be nonrecourse as to any assets of such successor  landlord other than its
equity in the building in which the leased  premises  are  located;  and (d) the
tenant's  obligation to pay rent and any additional rent shall not be subject to
any  abatement,  deduction,  counterclaim  or setoff as against any mortgagee or
purchaser  upon  the  foreclosure  of any of the  Properties  by  reason  of any
landlord default occurring prior to such  foreclosure."  This Lease falls within
the  definition  of "Lease"  referred to in the above quoted  language  from the
Indenture.   Landlord  and  Tenant  acknowledge  that  the  non-disturbance  and
attornment  agreement delivered by the Superior Mortgagee under the Indenture by
its terms modifies and  supersedes  the provisions of Section  6.6D(3)(d) of the
Indenture quoted above.

     (c)  Landlord  represents  to Tenant  that,  as of the date of this  Lease,
Landlord or an Affiliate of Landlord is the successor-in-interest to each of the
lessor and the lessee under the Ground Lease,  and Landlord  agrees that so long
as the lessor under the Ground Lease is Landlord or an Affiliate of Landlord, in
no event shall any action  taken by said lessor  serve to reduce any rights,  or
increase any obligations, of Tenant under this Lease.

     6.02 Estoppel  Certificate.  Each party shall, at any time and from time to
time,  within 20 days after  request by the other party,  execute and deliver to
the requesting  party (or to such person or entity as the  requesting  party may
designate)  a statement  certifying  that this Lease is  unmodified  and in full
force and effect (or if there have been modifications,  that the same is in full
force and effect as  modified  and stating the  modifications),  certifying  the
Relevant  Dates,  Expiration  Date and the  dates to which  the  Fixed  Rent and
Additional  Charges  have  been paid and  stating  whether  or not,  to the best
knowledge of such party,  the other party is in default in performance of any of
its obligations  under this Lease,  and, if so,  specifying each such default of
which such party shall have knowledge, it being intended that any such statement
shall be deemed a representation  and warranty to be relied upon by the party to
whom such  statement is  addressed.  Tenant also shall include or confirm in any
such  statement  such other  information  concerning  this Lease as Landlord may
reasonably  request in order to confirm the status of any rights or  obligations
of Tenant or Landlord  under this Lease.

     6.03  Default.  (a) This Lease and the term and estate  hereby  granted are
subject to the  limitation  that:  (i) if Tenant  defaults in the payment of any
Fixed Rent, Tax Payment, Operating Payment or payment in respect of electricity,
and such default  continues for 5 Business Days after  Landlord  gives to Tenant
(and,  if  applicable,  to the  Initially  Named Tenant if required  pursuant to
Section  5.04(c)  above) a notice  specifying  such default;  provided,  that if
Tenant,  within  such  5-Business  Day  period,  notifies  Landlord  that Tenant
disputes the payment in question, specifying the basis for Tenant's dispute, and
pays to Landlord any  undisputed  portion of such payment,  such  5-Business Day
period  shall be  extended  as to the  disputed  portion  of such  payment by an
additional 10 Business Days (i.e., 15 Business Days in the  aggregate),  or (ii)
if Tenant  defaults in the payment of any  Additional  Charges (other than a Tax
Payment,  Operating Payment or payment in respect of electricity,  each of which
is provided for in Section  6.03(a)(i) above), and such default continues for 15
Business  Days  after  Landlord  gives to Tenant  (and,  if  applicable,  to the
Initially  Named Tenant if required  pursuant to Section 5.04(c) above) a notice
specifying such default, or (iii) if Tenant defaults in the keeping,  observance
or  performance  of any  covenant  or  agreement  (other  than a default  of the
character referred to in Sections 6.03(a)(i),  (a)(ii) or (a)(iv)),  and if such
default continues and is not cured within 30 days after Landlord gives to Tenant
(and,  if  applicable,  to the  Initially  Named Tenant if required  pursuant to
Section  5.04(c)  above) a notice  specifying  the  same,  or,  in the case of a
default  which for causes beyond  Tenant's  reasonable  control  cannot with due
diligence  be cured  within such period of 30 days,  if Tenant  shall not within
said 30 days institute and thereafter  diligently prosecute to completion,  in a
commercially reasonable manner, all steps necessary to cure the same, or (iv) if
this Lease or the estate hereby granted would, by operation of law or otherwise,
devolve  upon or pass to any  person  or entity  other  than  Tenant,  except as
expressly  permitted  by Article 5, and Tenant shall fail to remedy such default
within 30 days after notice by Landlord to Tenant (and,  if  applicable,  to the
Initially Named Tenant if required pursuant to Section 5.04(c) above) specifying
such  default,  then,  in any of such cases,  in addition to any other  remedies
available to Landlord at law or in equity (but  subject to Section  6.06(a) with
respect to such other remedies),  Landlord shall be entitled to give to Tenant a
notice of intention to end the Term at the expiration of 5 days from the date of





the giving of such  notice,  and, in the event such notice is given,  this Lease
and the term and estate hereby  granted shall  terminate  upon the expiration of
such 5 days  with  the  same  effect  as if the  last  of such 5 days  were  the
Expiration  Date, but Tenant shall remain liable for damages as provided  herein
or pursuant to law.

     (b) (i) If Tenant  shall  dispute,  in good faith,  the  occurrence  of any
default  described in Section  6.03(a)(iii)  or (iv),  subject to the  following
sentence,  Tenant  shall have the right,  within 30 days after  Tenant  receives
notice of such  default,  to institute an  arbitration  proceeding in accordance
with the  provisions of Section 8.09 for the purpose of  determining  whether or
not such default  exists and pending the final outcome of such  arbitration  and
during the cure period hereinafter  provided for, Landlord shall not be entitled
to terminate  this Lease by reason of the  occurrence of such default.  Tenant's
right to dispute such default under this Section  6.03(b)(i) and the restriction
on Landlord's  right to terminate this Lease by reason of the occurrence of such
default  shall exist only if and to the extent that (A) neither the Land nor the
Building nor any portion  thereof,  nor Landlord's  interest  therein,  shall be
materially and adversely  affected by such contest,  (B) the health or safety of
persons shall not be in imminent  danger of being  threatened,  (C) such default
shall not subject Landlord to imminent risk of civil or criminal liability,  (D)
such  default  shall  not  be the  cause  of the  imminent  cancellation  of any
insurance  policy  maintained  by  Landlord,  (E) such  default  shall not cause
unreasonable  interference  to the use of space by another tenant or occupant of
the Building and (F) Tenant shall prosecute such  arbitration in compliance with
all of the provisions of Section 8.09; provided, that in the case of clauses (A)
through (F),  Landlord shall give Tenant notice of its  determination  that such
dispute by Tenant  would  violate  any such clause and the basis  therefor.  The
determination  of the  arbitration  proceeding  shall be final and binding  upon
Landlord and Tenant and (x) if the arbitration shall determine that such default
exists, Tenant shall have no rights at law or in equity (all of which are hereby
waived by  Tenant) to  contest  the  existence  of such  default  and (y) if the
arbitration  shall  determine  that such default does not exist,  Landlord shall
have no right to thereafter  give to Tenant a default notice with respect to the
specific  event that the  arbitrator  determined  not to be a  default.  Without
limiting  the  generality  of Section  8.09,  the  non-prevailing  party in such
arbitration  shall pay all of the reasonable costs and expenses  incurred by the
parties in connection with such proceeding.  If the arbitration  shall determine
that a default exists,  then the date on which the arbitrators give Landlord and
Tenant notice of such  determination  shall be deemed to be the date that Tenant
was given notice of such default  under  Section 6.03  (a)(iii) or (iv),  as the
case may be, for all purposes  hereunder,  so that Tenant shall  thereafter have
the cure  periods set forth in such  Section to cure such  default.  The dispute
rights  provided for in this Section  6.03(b)(i)  shall not apply in the case of
any default described in Section 6.03(a)(i) or Section  6.03(a)(ii) (but payment
by Tenant of any Rent shall not preclude Tenant from thereafter  arbitrating the
correctness of such payment in accordance  with Section 8.09).  (ii) If Landlord
gives a notice to Tenant in accordance with Section 6.03(b)(i)  informing Tenant
that the dispute by Tenant of any default in accordance  with such Section would
violate  any of clauses  (A) through  (F) of such  Section,  then  Tenant  shall
perform the disputed obligation, and if Tenant fails to do so, Landlord shall be
entitled to exercise all rights and remedies  under this Lease or otherwise with
respect to such failure (including,  without limitation,  the right to terminate
this  Lease).   Notwithstanding  the  foregoing,   after  Tenant  completes  the
performance of such disputed obligation, Tenant shall have the right to initiate
an  arbitration  in accordance  with Section 8.09 for the purpose of determining
whether or not Tenant was  obligated  to perform  such  disputed  obligation  in
accordance  with  the  provisions  of  this  Lease.  If such  arbitration  shall
determine  that  Tenant was not  obligated  to  perform  such  obligation,  then
Landlord shall promptly reimburse Tenant for all amounts reasonably  incurred by
Tenant in performing  such  obligation,  together  with interest  thereon at the
Prime Rate from the date that such  expenditure  was incurred by Tenant  through
the date of reimbursement by Landlord;  provided, that if such arbitration shall
determine that Landlord  acted in bad faith in requiring  Tenant to perform such
obligation,  then such  reimbursement  by Landlord shall be with interest at the
Interest Rate (instead of at the Prime Rate).

     6.04 Re-entry by Landlord. If this Lease shall terminate,  either (a) as in
Section  6.03  provided  or (b) after a default by Tenant in the  payment of any
Rent, by summary dispossess or other appropriate proceeding (a termination under
clause (a) or (b) is called a "Termination"),  Landlord or Landlord's agents and
servants may  immediately  or at any time  thereafter  re-enter into or upon the
Premises, or any part thereof,  without being liable to indictment,  prosecution
or damages  therefor,  and may  repossess  the same,  and may remove any persons
therefrom,  to the end that Landlord may have, hold and enjoy the Premises.  The
words  "re-enter" and  "re-entering" as used in this Lease are not restricted to
their  technical  legal  meanings.  Upon any  Termination,  Tenant  shall pay to
Landlord any Rent then due and owing (in addition to any damages  payable  under
Section 6.05).





     6.05 Damages.  In the event of a Termination,  Tenant shall pay to Landlord
as damages, at the election of Landlord, either: (a) a sum which, at the time of
such  termination,  represents the then value of the excess,  if any, of (i) the
aggregate  of the Rent  which,  had this Lease not  terminated,  would have been
payable  hereunder by Tenant for the period  commencing on the day following the
date of such  termination or re-entry to and including the Expiration  Date over
(ii) the  aggregate  fair rental  value of the Premises for the same period (for
the  purposes of this clause (a) the amount of  Additional  Charges  which would
have been  payable  by  Tenant  under  Sections  2.04 and 2.05  shall,  for each
calendar  year ending after such  termination  or  re-entry,  be deemed to be an
amount equal to the amount of such Additional  Charges payable by Tenant for the
calendar year immediately  preceding the calendar year in which such termination
or  re-entry  shall  occur),  or

     (b) sums equal to the Rent that would have been  payable by Tenant  through
and including the Expiration  Date had this Lease not  terminated,  payable upon
the due dates therefor specified in this Lease; provided, that if Landlord shall
relet  all or any  part  of the  Premises  for  all or any  part  of the  period
commencing on the day following the date of such  termination or re-entry to and
including the Expiration  Date,  Landlord shall credit Tenant with the net rents
received by Landlord  from such  reletting,  such net rents to be  determined by
first  deducting from the gross rents as and when received by Landlord from such
reletting the expenses  incurred or paid by Landlord in  terminating  this Lease
and of re-entering the Premises and of securing  possession  thereof, as well as
the actual expenses of reletting,  including,  without limitation,  altering and
preparing  the  Premises for new tenants,  brokers'  commissions,  and all other
actual  expenses  properly  chargeable  against  the  Premises  and  the  rental
therefrom in connection with such reletting,  it being  understood that any such
reletting  may be for a period  equal to or shorter or longer than said  period;
provided,  further, that (i) in no event shall Tenant be entitled to receive any
excess of such net rents over the sums payable by Tenant to Landlord  under this
Lease, (ii) in no event shall Tenant be entitled, in any suit for the collection
of damages pursuant to this Section  6.05(b),  to a credit in respect of any net
rents from a  reletting  except to the extent  that such net rents are  actually
received  by  Landlord on account of any period that is the subject of such suit
and (iii) if the  Premises or any part  thereof  should be relet in  combination
with other space, then proper apportionment on a square foot rentable area basis
shall be made of the rent  received  from such  reletting and of the expenses of
reletting.  Suit or suits for the recovery of any damages  payable  hereunder by
Tenant,  or any  installments  thereof,  may be brought by Landlord from time to
time at its election,  and nothing  contained  herein shall require  Landlord to
postpone  suit  until the date when the Term  would  have  expired  but for such
Termination.

     6.06 Other  Remedies.  (a)  Nothing  contained  in this Lease  (other  than
Section 7.05(f) below) shall be construed as limiting or precluding the recovery
by Landlord  against Tenant of any sums or damages to which,  in addition to the
damages particularly provided above, Landlord may lawfully be entitled by reason
of any  default  hereunder  on the part of  Tenant;  provided,  that  Landlord's
damages  solely in respect of Tenant's  failure to pay Rent for the remainder of
the Term in the event of a Termination shall be limited to amounts calculated in
accordance  with  Section  6.05.

     (b) Except where any  provision of this Lease  provides  that Tenant's sole
remedy for any failure by Landlord to perform any of its obligations  under this
Lease is as specified in this Lease (or words to that effect), nothing contained
in this Lease (other than Section  7.05(f) below) shall be construed as limiting
or precluding the recovery by Tenant against  Landlord of any sums or damages to
which, in addition to the damages  particularly  provided in this Lease,  Tenant
may  lawfully  be entitled  by reason of any  default  hereunder  on the part of
Landlord  (but  subject in all  events to Section  8.06). 

     (c) Anything to the contrary contained in this Lease notwithstanding, in no
event shall Landlord or Tenant be liable to the other for consequential  damages
under this Lease.

     6.07 Right to Injunction.  In the event of a breach or threatened breach by
Landlord or Tenant of any of its obligations  under this Lease,  the other party
shall also have the right of injunction. Except as set forth in Sections 6.06(a)
and (b) above,  the  specified  remedies to which  Landlord or Tenant may resort
hereunder  are  cumulative  and are not  intended to be  exclusive  of any other
remedies  or means of  redress  to which  Landlord  or Tenant  may  lawfully  be
entitled,  and  Landlord  or Tenant may  invoke any remedy  allowed at law or in
equity as if specific remedies were not herein provided for.

     6.08 Certain Waivers.  Tenant waives and surrenders all right and privilege
that Tenant might have under or by reason of any present or future law to redeem
the Premises or to have a continuance of this Lease after Tenant is dispossessed
or ejected therefrom by process of law or under the terms of this Lease or after
any  termination of this Lease.  Tenant also waives the right to seek a delay in





levy of execution in case of any eviction or  dispossession  for  nonpayment  of
rent.  Landlord and Tenant each waive trial by jury in any action in  connection
with this Lease.

     6.09 No Waiver.  Failure by either party to declare any default immediately
upon its  occurrence  or delay in  taking  any  action in  connection  with such
default  shall not waive such  default  but such  party  shall have the right to
declare any such default at any time  thereafter.  If either party designates by
notice  to the other  party  that a payment  made by the  paying  party is to be
applied by the  receiving  party to a  particular  item then owing by the paying
party to the receiving party,  then the receiving party shall apply such payment
to such  particular  item.  Any amounts  paid by Landlord or Tenant to the other
party,  without  notice of a  particular  item to which  such  payment  is to be
applied,  may be applied  by the  receiving  party,  in its  discretion,  to any
amounts  then  owing by the  paying  party to the  receiving  party.  Receipt by
Landlord  of a  partial  payment  shall  not  be  deemed  to  be an  accord  and
satisfaction  (notwithstanding  any endorsement or statement on any check or any
letter  accompanying  any check or payment) nor shall such receipt  constitute a
waiver by Landlord of Tenant's  obligation to make full payment. No act or thing
done by Landlord or its agents shall be deemed an  acceptance  of a surrender of
the Premises, and no agreement to accept such surrender shall be valid unless in
writing  and signed by  Landlord  and by each  Superior  Lessor  (other than the
Superior  Lessor  under  the  Ground  Lease so long as such  Superior  Lessor is
Landlord or an Affiliate of Landlord)  and Superior  Mortgagee  with whom Tenant
has (or is deemed to have) in effect a binding  non-disturbance  and  attornment
agreement.

     6.10 Holding Over. (a) If Tenant holds over without the consent of Landlord
after  expiration  or  termination  of this Lease,  Tenant shall pay as holdover
rental for each month of the holdover  tenancy an amount equal to the product of
(i) the  Holdover  Percentage  multiplied  by (ii) the  greater  of (A) the fair
market  rental  value of the  Premises  for such month or (B) the Fixed Rent and
recurring  Additional  Changes  which Tenant was  obligated to pay for the month
immediately  preceding the end of the Term.  "Holdover  Percentage"  means, with
respect to any holdover by Tenant after the  expiration or  termination  of this
Lease,  (I) for the first 30 days of such holdover  tenancy,  110%, (II) for the
second 30 days of such holdover  tenancy,  120%,  (III) for the third 30 days of
such  holdover  tenancy,  130%,  (IV) for the  fourth  30 days of such  holdover
tenancy,  140% and (V) thereafter,  150%. Subject to Section 6.10(b), no holding
over by Tenant after the Term shall operate to extend the Term.  Notwithstanding
the  foregoing,  the  acceptance  of any rent  paid by Tenant  pursuant  to this
Section 6.10 shall not preclude  Landlord  from  commencing  and  prosecuting  a
holdover or summary eviction  proceeding. 

     (b) If (i) Tenant holds over for more than 9 months after the expiration or
termination of this Lease,  (ii) Landlord enters into a lease  ("Landlord's  New
Lease") with a tenant for all or any part of the  Premises (a "New  Tenant") and
such New Tenant terminates Landlord's New Lease by reason of the holding over by
Tenant and (iii)  either (A) Tenant  shall not have entered into a lease for new
premises  ("Tenant's  New Lease") on or before the date that is the later of (x)
the date that the New Tenant  terminates  Landlord's  New Lease and (y) the date
that is 9 months after the expiration or termination of this Lease or (B) Tenant
shall have entered  into  Tenant's New Lease on or before the later of the dates
described  in clauses (x) and (y) above,  and Tenant shall have  terminated,  or
shall then have the right to terminate  (provided that such right shall continue
to be  available  for at least 2 Business  Days  after the giving of  Landlord's
notice of exercise of  Landlord's  option next  described),  Tenant's New Lease,
then, at Landlord's  option  exercisable  upon 2 Business Days notice to Tenant,
this Lease shall be deemed to be automatically renewed upon all of the terms and
conditions set forth in this Lease, except that (I) the term of this Lease shall
be extended  for an  additional  period equal in duration to the initial term of
Landlord's New Lease (the "Holdover Renewal Term"), (II) Fixed Rent with respect
to the Premises for the Holdover  Renewal Term shall be equal (on a per rentable
square foot basis) to the Fixed Rent payable in accordance  with  Landlord's New
Lease for the initial  term  thereof  (after  giving  effect to the value of any
concessions  under Landlord's New Lease that are not received by Tenant),  (III)
Tenant's  Tax  Payment  and  Tenant's  Operating  Payment  shall be  payable  in
accordance  with  Article  2;  provided,  that the Base Tax  Amount and the Base
Operating Year shall be as specified in Landlord's New Lease,  (IV) Tenant shall
accept the Premises in its "as is" condition at the commencement of the Holdover
Renewal Term, and any provisions of this Lease with respect to Landlord's  Work,
payment of a work  allowance and any abatement of Fixed Rent and any  Additional
Charges (relating only to Tenant's initial  construction  period with respect to
any  space  comprising  the  Premises,  i.e.,  the  period  prior  to  the  rent
commencement  date for such space) shall not be  applicable  during the Holdover
Renewal  Term and (V) Tenant shall have no option to renew this Lease beyond the
expiration of the Holdover Renewal Term.  Promptly after the commencement of the
Holdover  Renewal  Term,  the parties  shall  execute and deliver an  instrument
confirming the extension of the term of this Lease for the Holdover Renewal Term
upon the terms and  conditions  of this Section  6.10(b),  but the failure to so
execute and deliver such instrument  shall not affect such extension of the term




of this  Lease.  Landlord  shall  promptly  notify  Tenant  of the  terms of any
termination right contained in Landlord's New Lease which permits the New Tenant
to  terminate  Landlord's  New Lease by reason of the  failure  of  Landlord  to
deliver the premises leased to the New Tenant within a certain time period or by
a certain  date.  Tenant  shall  promptly  notify  Landlord  of the terms of any
termination  right  contained  in  Tenant's  New Lease which  permits  Tenant to
terminate Tenant's New Lease by reason of the failure of the landlord thereunder
to deliver  Tenant's new  premises  within a certain time period or by a certain
date.

     6.11 Attorneys'  Fees. If either party places the enforcement of this Lease
or any part  thereof,  or the  collection of any Rent or other payment due or to
become due  hereunder,  or recovery of the  possession of the  Premises,  in the
hands of an attorney, or files suit upon the same, the prevailing party shall be
reimbursed by the losing party,  within 30 days after demand, for its reasonable
attorneys'  fees and  disbursements  and  court  costs.

     6.12 Nonliability and Indemnification.  (a) Neither Landlord,  any Superior
Lessor  or  any  Superior  Mortgagee,  nor  any  partner,   director,   officer,
shareholder,  principal,  agent,  servant or employee of Landlord,  any Superior
Lessor or any Superior Mortgagee  (whether  disclosed or undisclosed),  shall be
liable  to Tenant  for (i) any loss,  injury or damage to Tenant or to any other
person,  or to its or their property,  irrespective of the cause of such injury,
damage or loss,  nor shall the  aforesaid  parties  be liable for any loss of or
damage to property of Tenant or of others  entrusted  to  employees of Landlord;
provided, that, subject to Sections 7.03 and 7.05(f), the foregoing shall not be
deemed to relieve  Landlord,  any  Superior  Lessor or any  Superior  Mortgagee,
respectively,  of any liability to the extent  resulting  from the negligence or
willful  misconduct  of  such  party  or  its  agents,  servants,  employees  or
contractors  in the  operation or  maintenance  of the Premises or the Building,
(ii) any loss,  injury or damage  described  in clause (i) above caused by other
tenants or persons in, upon or about the  Building,  or caused by  operations in
construction of any public or quasi-public work, except in the case of Landlord,
if and to the extent caused by the negligence or willful  misconduct of Landlord
or  Landlord's  agents,  servants,  employees  or  contractors  (but  subject to
Sections 7.03 and 7.05(f)),  or (iii) even if negligent,  consequential  damages
arising out of any loss of use of the Premises or any  equipment,  facilities or
other Tenant's Property therein.  This Section 6.12(a) shall not be construed to
relieve  Landlord of any of Landlord's  obligations  set forth elsewhere in this
Lease or to deprive  Tenant of any  remedies to which  Tenant may be entitled in
the event of the breach by Landlord of any of Landlord's  obligations under this
Lease. 

     (b) Subject to the  provisions of Sections  7.03 and 7.05(f),  Tenant shall
indemnify  and hold  harmless  Landlord,  all Superior  Lessors and all Superior
Mortgagees  and  each  of  their  respective  partners,   directors,   officers,
shareholders,  principals,  agents and employees (each  (including  Landlord and
such superior parties), a "Landlord  Indemnified  Party"),  from and against any
and all claims caused by (i) the conduct or management of the Premises or of any
business therein,  or any work or thing done, or any condition  created,  in the
Premises;  provided,  that Tenant's  indemnity pursuant to this clause (i) shall
not apply to the extent such claim  results from the acts (other than any act in
connection  with the exercise by Landlord of its  self-help  remedy set forth in
Section 4.08, in which case Tenant's indemnity pursuant to this clause (i) shall
not apply only to the extent that any such claim results from the  negligence or
willful  misconduct of Landlord) or (where a Landlord  Indemnified  Party has an
affirmative  obligation to act pursuant to the terms of this Lease) omissions of
any Landlord  Indemnified  Party,  (ii) any negligence or willful  misconduct of
Tenant or any person claiming through or under Tenant or any of their respective
partners,  directors,  officers, agents, employees,  contractors or invitees (so
long as such invitees are in the Premises) with respect to any accident,  injury
or damage occurring in, at or upon the Project or (iii) the use by Tenant or any
other person of Tenant's  Parking  Spaces;  provided,  that  Tenant's  indemnity
pursuant  to clauses  (ii) and (iii)  above  shall not apply to the extent  such
claim  results  from  the  negligence  or  willful  misconduct  of any  Landlord
Indemnified  Party, in each case together with all reasonable costs and expenses
incurred  in  connection  with each such claim or action or  proceeding  brought
thereon,  including,  without  limitation,  all reasonable  attorneys'  fees and
disbursements.  If any action or  proceeding  is brought  against  any  Landlord
Indemnified  Party by reason of any such  claim,  Tenant,  upon notice from such
Landlord  Indemnified  Party,  shall resist and defend such action or proceeding
(by counsel  reasonably  satisfactory to such Landlord  Indemnified  Party,  and
counsel selected by Tenant's  insurance company to resist and defend such action
or proceeding is hereby deemed to be satisfactory  to such Landlord  Indemnified
Party).

     (c) Subject to the provisions of Sections 7.03 and 7.05(f),  Landlord shall
indemnify and hold harmless Tenant and Tenant's partners,  directors,  officers,
shareholders,  principals,  agents and employees  (each  (including  Tenant),  a
"Tenant Indemnified Party"), from and against any and all claims arising from or
in  connection  with any  negligence  or willful  misconduct  of Landlord or any
Landlord  Indemnified  Party  with  respect  to any  accident,  injury or damage



occurring  in,  at or upon the  Project;  together  with all  reasonable  costs,
expenses and  liabilities  incurred in connection with each such claim or action
or proceeding brought thereon,  including,  without  limitation,  all attorneys'
fees and disbursements;  provided, that (except in the case of Tenant's exercise
of its self-help  remedies under Section  10.01(a),  in which case the foregoing
indemnity  shall apply with respect to claims made by third parties arising from
or in connection with the acts or omissions of Tenant or any Affiliated agent of
Tenant,  but not those of any contractor or non-Affiliated  agent of Tenant) the
foregoing  indemnity  shall not apply to the extent such claim  results from the
negligence or willful  misconduct of any Tenant Indemnified Party. If any action
or proceeding is brought against any Tenant  Indemnified  Party by reason of any
such claim,  Landlord,  upon notice from such Tenant  Indemnified  Party,  shall
resist and defend such action or proceeding (by counsel reasonably  satisfactory
to such Tenant Indemnified  Party, and counsel selected by Landlord's  insurance
company to resist and defend such action or  proceeding  is hereby  deemed to be
satisfactory to such Tenant Indemnified Party).





                                    ARTICLE 7
                       Insurance; Casualty; Condemnation

     7.01 Compliance with Insurance Standards. (a) Neither Tenant nor any person
claiming through or under Tenant, nor any of their respective agents, employees,
contractors  or invitees (so long as such  invitees are in the  Premises)  shall
violate any reasonable  condition imposed by any insurance policy then issued in
respect of the Project or do or keep  anything in the Premises  (after  Landlord
shall have  notified  Tenant not to do so) which  would  subject  Landlord,  any
Superior Lessor or any Superior Mortgagee to any liability or responsibility for
personal  injury  or death or  property  damage,  or which  would  increase  any
insurance  rate in respect of the Project  over the rate which  would  otherwise
then be in effect or which would result in insurance  companies of good standing
refusing to insure the Project in amounts  reasonably  satisfactory to Landlord,
or which would result in the cancellation of, or the assertion of any defense by
the  insurer in whole or in part to claims  under,  any policy of  insurance  in
respect of the Project;  but nothing in this Section  7.01(a) shall be construed
to prohibit  Tenant's use of the Premises for the uses  permitted  under Section
1.05.  Tenant  shall not be  responsible  for any  increased  insurance  rate in
respect of the Project over the rate that would otherwise then be in effect, and
this Section  7.01(a)  shall not be construed to impose any liability on Tenant,
in each case solely by reason of Tenant's  use of the  Premises for the purposes
stated in Section  1.05;  provided,  that,  in the case of  Tenant's  use of the
Premises  as a  Cafeteria,  Tenant  complies  with all  Laws and the  reasonable
requirements of Landlord's  insurer  applicable to such use.

     (b) If, as a direct  result of any  failure  of Tenant to comply  with this
Lease, the premiums on Landlord's  insurance on the Project shall be higher than
they otherwise would be, Tenant shall reimburse  Landlord,  within 30 days after
demand,  for that part of such  premiums  paid by reason of such  failure on the
part of Tenant,  provided that said demand shall be  accompanied  by a statement
from the insurer which shall expressly  identify the specific act or activity of
Tenant  causing the increase in the  insurance  rate. A schedule or "make up" of
rates for the  Project or the  Premises,  as the case may be,  issued by the New
York Fire Insurance  Rating  Organization or other similar body making rates for
insurance  for the  Project  or the  Premises,  as the  case  may be,  shall  be
presumptive  evidence of the facts  therein  stated and of the several items and
charges in the insurance rate then applicable to the Project or the Premises, as
the case may be. 

     (c) Notwithstanding anything to the contrary contained herein, Tenant shall
not be liable for any increases in fire insurance premiums,  unless Tenant shall
have  received not less than 120 days advance  notice of the  imposition of such
increases,  during which period Tenant may notify  Landlord that Tenant  desires
Landlord to contest the imposition of such increases with  Landlord's  insurance
company.  If Tenant  timely  gives  such  notice  to  Landlord,  Landlord  shall
vigorously  contest the imposition of such increases with  Landlord's  insurance
company.  Pending the final determination of any such contest,  Tenant shall not
be required to pay any such disputed  amount.  If it is finally  determined that
Tenant is  required  to pay such  disputed  amount,  Tenant  shall pay the same,
together with interest thereon at the Prime Rate (or the Interest Rate if Tenant
is  determined  by an  arbitration  in  accordance  with  Section  8.09  to have
contested  any such  increase in insurance  premiums in bad faith) from the date
such  disputed  amounts  were paid by  Landlord  through  the date of payment by
Tenant,  within 30 days after demand  therefor by  Landlord. 

     (d) Landlord, at Landlord's expense, shall maintain at all times during the
Term,  with a reputable  insurance  company  licensed to do business in New York
State and rated by Best's  Insurance  Reports or any  successor  publication  of
comparable standing as "A VIII" or better or the then equivalent of such rating,
the following insurance:  (i) commercial general liability insurance against all
claims, demands or actions for injury to or death of person or property having a
limit of not less than  $25,000,000  per  occurrence  and/or  in the  aggregate,
including products liability, contractual liability and independent contractors'
coverage,  arising from or related to, the conduct of Landlord, the operation of
the Project  and/or  caused by the acts or omissions  of Landlord,  the managing
agent for the Building and their respective employees; (ii) if there is a boiler
or other  similar  refrigeration  equipment or pressure  object or other similar
equipment  in  the  Building,  steam  boiler,  air  conditioning  and  machinery
insurance  written  on broad  form  basis with a limit of not less than the full
replacement value of such equipment;  (iii) "all-risk" insurance,  to the extent
of 100% of the replacement cost of the Building (including,  without limitation,
the Landlord  Obligation  Areas,  but  excluding  the  Premises,  other than any
Landlord Obligation Areas within the Premises,  and all Tenant's Fixtures);  and
(iv) worker's compensation, disability and such other similar insurance covering
all persons employed in connection with Landlord's Work and with respect to whom
death or bodily injury claims could be asserted against  Landlord,  Tenant,  the
Premises or the Building.





     (e)  Within  10  days  after  Landlord's  receipt  of  notice  from  Tenant
requesting  same,  Landlord  shall  give  Tenant  reasonable  evidence  that the
insurance  required to be carried by Landlord  under Section  7.01(d) is in full
force and effect.

     7.02 Tenant's Insurance. Tenant shall maintain at all times during the Term
(a) "all risk"  property  insurance  covering the Premises  (including,  without
limitation,  all present and future Tenant's Property and Tenant's Fixtures, but
excluding  any Landlord  Obligation  Areas) to a limit of not less than the full
replacement cost thereof, (b) commercial general liability insurance,  including
a contractual liability endorsement,  and personal injury liability coverage, in
respect of the Premises and the conduct or operation of business  therein,  with
Landlord and its managing  agent,  if any, and each Superior Lessor and Superior
Mortgagee  whose name and  address  shall  have been  furnished  to  Tenant,  as
additional  insureds,  with limits of not less than  $5,000,000  combined single
limit for bodily injury and property damage  liability in any one occurrence (c)
steam boiler, air conditioning or machinery  insurance,  if there is a boiler or
pressure  object or similar  equipment in the Premises,  with limits of not less
than the full replacement  value of such equipment,  (d) when Alterations are in
process, the insurance specified in Section 4.02(e) hereof and (e) the insurance
specified in Section 8.25(d). Such insurance may be carried under blanket and/or
umbrella  policies covering the Premises and other properties owned or leased by
Tenant;  provided,  that each such policy shall in all respects comply with this
Section  7.02,  shall  specify  that the  portion of the total  coverage of such
policy that is allocated to the Premises is in the amounts required  pursuant to
this  Section  7.02 and  shall  provide  that the  amount of  coverage  afforded
thereunder  with  respect  to the  Premises  shall  not  be  reduced  by  claims
thereunder  against such other properties.  The limits of the insurance required
under this  Section 7.02 shall not limit the  liability of Tenant.  Tenant shall
deliver to Landlord and any additional insureds,  on or before the Relevant Date
with respect to each Block (or any applicable portion thereof),  certificates of
insurance  evidencing  the  insurance  required to be maintained by Tenant under
this  Section  7.02 issued by the  insurance  company or its  authorized  agent.
Tenant shall  procure  renewals of such  insurance  from time to time before the
expiration  thereof,  and Tenant shall  deliver to Landlord  and any  additional
insureds such renewal  certificate before the expiration of any existing policy.
All such  policies  shall be issued by  companies of  recognized  responsibility
licensed to do business in New York State and rated by Best's Insurance  Reports
or any successor publication of comparable standing as "A VIII" or better or the
then equivalent of such rating,  and all such policies shall contain a provision
whereby the same cannot be canceled unless Landlord and any additional  insureds
are given at least 30 days' prior written notice of such cancellation.  Landlord
and Tenant shall  cooperate with each other in connection with the collection of
any  insurance  monies  that may be due in the  event of loss and  Landlord  and
Tenant  shall  execute  and  deliver to each other such proofs of loss and other
instruments which may be required to recover any such insurance monies. Landlord
may from time to time (but not more  frequently than once every 3 years) require
that the amount of the  insurance to be  maintained by Tenant under this Section
7.02 be  increased,  so that  the  amount  thereof  is equal  to the  amount  of
insurance  which  landlords of midtown  Manhattan  buildings  comparable  to the
Building are then requiring tenants to carry.

     7.03 Subrogation Waiver.  Landlord and Tenant shall each include in each of
its respective insurance policies insuring the Building,  any portion thereof or
any  property  therein  against  loss,  damage or  destruction  by fire or other
casualty, a waiver of the insurer's right of subrogation against the other party
during the Term or, if such waiver should be unobtainable or unenforceable,  (a)
an express  agreement  that such policy shall not be  invalidated if the assured
waives  the right of  recovery  against  any party  responsible  for a  casualty
covered by the policy  before the  casualty or (b) any other form of  permission
for the release of the other party.  Each party hereby  releases the other party
with  respect to any claim  (including  a claim for  negligence)  which it might
otherwise  have  against the other party for loss,  damage or  destruction  with
respect to its property  occurring during the Term to the extent to which it is,
or is required to be, insured under a policy or policies  containing a waiver of
subrogation  or  permission  to release  liability.  Nothing  contained  in this
Section  7.03  shall be  deemed  to  relieve  either  party of any duty  imposed
elsewhere  in this  Lease to  repair,  restore  or  rebuild  or to  nullify  any
abatement of rents provided for elsewhere in this Lease.

     7.04 Condemnation.  (a) If there shall be a total taking of the Building in
condemnation  proceedings or by any right of eminent domain,  this Lease and the
term and  estate  hereby  granted  shall  terminate  as of the date of taking of
possession by the  condemning  authority and all Rent shall be prorated and paid
as of such  termination  date.  If there  shall  be a taking  of the Land or the
Building (whether or not the Premises are affected by such taking) of such scope
such that the untaken part thereof  would be in Landlord's  reasonable  judgment
uneconomic or undesirable to operate, then Landlord may terminate this Lease and
the term and estate  granted  hereby by giving  notice to Tenant  within 60 days
after the date of taking of possession by the  condemning  authority;  provided,





that if no part of the  Premises is subject to such  taking,  Landlord  shall be
entitled to  terminate  this Lease only if Landlord  then  terminates  all other
leases  for  office  space in the  Building.  If there  shall be a taking of the
Premises of such scope that the untaken part of the  Premises  would in Tenant's
reasonable  judgment be uneconomic or  undesirable  to operate,  then Tenant may
terminate this Lease and the term and estate granted thereby by giving notice to
Landlord within 60 days after the date of taking of possession by the condemning
authority.  If either  Landlord  or Tenant  shall give a  termination  notice as
aforesaid,  then  this  Lease  and the  term and  estate  granted  hereby  shall
terminate  as of the date of such notice and all Rent shall be prorated and paid
as of such termination date. In the event of a taking of the Premises which does
not  result in the  termination  of this  Lease (i) the term and  estate  hereby
granted with respect to the taken part of the Premises shall terminate as of the
date of taking of possession by the condemning authority and all Rent applicable
to the taken part of the Premises shall be  appropriately  abated for the period
from such date to the Expiration  Date and (ii) Landlord  shall with  reasonable
diligence restore the remaining  portion of the Premises  (exclusive of Tenant's
Property) as nearly as practicable to its condition prior to such taking. In the
case of any termination of this Lease under this Section 7.04, whether as to all
or a portion of the Premises,  Tenant shall pay to Landlord the amount,  if any,
due in accordance with Section 7.06 below.

     (b) In the event of any taking of all or a part of the  Building,  Landlord
shall be  entitled  to make a claim  for and  receive  the  entire  award in the
condemnation proceeding made for the value of the estate vested by this Lease in
Tenant or any value  attributable  to the unexpired  portion of the Term and for
the costs to perform the repairs to the Building and the Premises which Landlord
is required to perform pursuant to Section 7.04(d), and Tenant shall be entitled
to make a claim for and receive from the condemning authority,  any compensation
to which  Tenant may  otherwise  lawfully be entitled in such case in respect of
Tenant's  Property,  the  unamortized  cost  (as  shown  on  Tenant's  financial
statements)  of all  Alterations  made by Tenant  to the  Premises  at  Tenant's
expense  (without  the use of any work  allowance  provided  by  Landlord),  any
increased  rent which  Tenant is (or would be)  required to pay for new space to
the extent such space is  comparable to the  Premises,  moving  expenses and the
unamortized  cost of all Alterations for which Tenant was reimbursed by any work
allowance  provided  by  Landlord  to Tenant for each  Block or any other  space
included in the  Premises  which shall have been repaid to Landlord  through the
payment of Fixed Rent by Tenant (for purposes  solely of determining the portion
of any such work allowance which shall have been so repaid,  work allowances for
each Block or any other space shall be deemed to be amortized on a straight-line
basis during the period  commencing on the rent commencement date for such Block
or other space and ending on the last day of the initial  Term (or, if such work
allowance is provided by Landlord  during any renewal term, the last day of such
renewal term), so that each Fixed Rent payment made by Tenant during such period
shall include an equal amount of such work  allowance);  provided,  that if such
taking shall include only a portion of any Block or a portion of any other space
included  in the  Premises  and this  Lease  shall not be  terminated  by reason
thereof,  any work allowance  provided by Landlord with respect to such Block or
other space shall be appropriately  prorated based upon the rentable area of the
taken portion of such Block or other space and amortized in accordance  with the
foregoing  provisions.  Notwithstanding  the  foregoing,  Tenant  shall  not  be
permitted to make a claim in any such condemnation proceeding which shall reduce
the award to Landlord  for the costs to perform the repairs to the  Building and
the Premises which Landlord is required to perform pursuant to Section 7.04(d).

     (c) If all or any part of the Premises shall be taken for a limited period,
Tenant shall be entitled,  except as hereinafter  set forth,  to that portion of
the  award  for  such  taking  which  represents  compensation  for  the use and
occupancy of the  Premises,  for the taking of Tenant's  Property and for moving
expenses,  and  Landlord  shall be entitled  to that  portion  which  represents
reimbursement  for the cost of restoration of the Premises  (including  Tenant's
Alterations). Notwithstanding anything to the contrary contained in this Section
7.04(c), if any such temporary taking shall continue for a period in excess of 6
months,  the same shall be deemed a  permanent  taking,  and the  provisions  of
Sections 7.04(a) and (b) shall apply thereto. This Lease shall remain unaffected
by such  taking  (unless  such  taking  exceeds 6 months and one of the  parties
terminates  this Lease under the preceding  sentence) and Tenant shall  continue
responsible  for all of its  obligations  under this  Lease to the  extent  such
obligations  are not  affected by such taking and shall  continue to pay in full
all Rent when due. If the period of  temporary  use or  occupancy  shall  extend
beyond the Expiration Date, that part of the award which represents compensation
for the use and occupancy of the Premises shall be apportioned  between Landlord
and Tenant as of the Expiration  Date. Any award for temporary use and occupancy
for a period  beyond  the date to which the Rent has been paid shall be paid to,
held and  applied by Tenant as a trust fund for  payment of the Rent  thereafter
becoming  due.  





     (d) In the event of any taking which does not result in termination of this
Lease,  Landlord,  whether or not any award shall be sufficient therefor,  shall
proceed with reasonable  diligence to repair the remaining parts of the Building
and the Premises  (including all Fixtures,  but excluding  Tenant's Property) to
substantially their former condition to the extent that the same may be feasible
(subject to reasonable  changes which  Landlord  deems  desirable)  and so as to
constitute a complete and rentable Building and Premises.

     7.05  Casualty.  (a) If the Building or the Premises  shall be partially or
totally  damaged or destroyed by fire or other casualty (each, a "Casualty") and
if this Lease is not  terminated  as provided  below,  then (i)  Landlord  shall
repair and restore the Building  (including,  without  limitation,  the Landlord
Obligation Areas, but excluding the Premises, other than any Landlord Obligation
Areas within the  Premises,  and all Fixtures  and Tenant's  Property)  with due
diligence (provided,  that Landlord shall not be required to perform the same on
an  overtime  or premium pay basis  except to the extent the  insurance  carrier
agrees to pay for such overtime  without  reducing the total insurance  proceeds
available to be paid to Landlord)  after  Landlord has actual  knowledge of such
Casualty and (ii) Tenant shall repair and restore,  in  accordance  with Section
4.02, the Premises  (including,  without  limitation,  all Fixtures and Tenant's
Property,  but excluding all Landlord Obligation Areas) with reasonable dispatch
after the Casualty. 

     (b) If, by  reason  of a  Casualty,  all or part of the  Premises  shall be
rendered Untenantable,  whether by reason of damage to the Premises or by reason
of  damage  to  other  portions  of the  Building  which  results  in a lack  of
reasonable  access to, or a material  interference  with the ability to use, the
Premises,  the Fixed Rent and  Additional  Charges under  Sections 2.04 and 2.05
shall be abated in the  proportion  that the  Untenantable  area of the Premises
bears to the total area of the  Premises,  for the  period  from the date of the
Casualty to the earlier of (i) the date (the "Substantial Completion Date") that
Landlord  substantially  completes the repair and restoration to the portions of
the Building (including,  without limitation, the Landlord Obligation Areas, but
excluding  the  Premises,  other than any Landlord  Obligation  Areas within the
Premises,  and all Fixtures and Tenant's Property)  necessary in order to render
the Premises  tenantable (the "Required  Restoration  Work") (provided,  that if
such  repair and  restoration  would  have been  substantially  completed  at an
earlier  date but for  Tenant  having  failed  to  cooperate  with  Landlord  in
effecting repairs or restoration or collecting  insurance proceeds or any Tenant
Delay,   then  such  repair  and  restoration  shall  be  deemed  to  have  been
substantially  completed on such earlier date and the  abatement  shall cease on
such earlier date) or (ii) the date Tenant or any subtenant reoccupies a portion
of the Premises for the conduct of Tenant's normal business  operations  therein
(in which  case the Fixed  Rent and the  Additional  Charges  allocable  to such
reoccupied  portion shall be payable by Tenant from the date of such occupancy).
Landlord's determination of the Substantial Completion Date shall be controlling
unless Tenant  disputes same by notice to Landlord within 10 days after Landlord
shall have given notice of such  determination to Tenant, and pending resolution
of  such  dispute,   Tenant  shall  pay  Rent  in  accordance   with  Landlord's
determination.  If it is resolved that the  Substantial  Completion Date was not
the date so fixed by  Landlord,  any payments of Rent paid by Tenant to Landlord
during the period  commencing  on such date fixed by Landlord  and ending on the
day  before the proper  Substantial  Completion  Date,  together  with  interest
thereon at the Prime Rate from the date of the applicable  payments by Tenant to
the date of payment by Landlord,  shall be paid by Landlord to Tenant  within 30
days after the  resolution  of such dispute.  Nothing  contained in this Section
7.05 shall relieve  Tenant from any liability  that may exist as a result of any
Casualty.  For  purposes of this  Section  7.05(b),  in the case of any Casualty
which renders all or part of the Premises Untenantable, the Required Restoration
Work shall be deemed to be  substantially  completed on the date upon which such
work is completed other than minor details or adjustments to such work, but only
if such details or adjustments  shall not interfere in any material respect with
Tenant's  ability to repair and restore the portion of the Premises  (including,
without   limitation,   Tenant's  Fixtures  and  Tenant's   Property)   rendered
Untenantable  by such Casualty or thereafter  use and occupy such portion of the
Premises  for the ordinary  conduct of Tenant's  intended use of such portion of
the Premises (as such use is shown on, or  reasonably  inferable  from  Tenant's
then  current  plans and  specifications  with  respect to  Tenant's  repair and
restoration  work);  provided,  that such intended use is permitted  pursuant to
Section 1.05.  "Untenantable"  means that Tenant (or any applicable subtenant of
Tenant) shall be unable to occupy,  and shall not be occupying,  the Premises or
the  applicable  portion  thereof  for the  purposes  for which  Tenant (or such
subtenant) was using the Premises or such portion thereof  immediately  prior to
the  Casualty  or  other  event  in  question  (including  for  the  purpose  of
construction if Tenant (or such  subtenant) was then  performing  Alterations in
the Premises or such portion thereof).





     (c) If by reason of a Casualty (i) the Building shall be totally damaged or
destroyed,  (ii) the Building  shall be so damaged or destroyed  (whether or not
the Premises are damaged or destroyed) that repair or restoration  shall require
more  than 270 days or the  expenditure  of more  than 33%  percent  of the full
insurable value of the Building  (which,  for purposes of this Section  7.05(c),
shall mean  replacement  cost less the cost of footings,  foundations  and other
structures below the street and first floors of the Building)  immediately prior
to the  Casualty,  then in any such case  Landlord may  terminate  this Lease by
notice  given to Tenant  within  180 days  after the  Casualty;  provided,  that
Landlord may only  terminate  this Lease if Landlord  then also  terminates  the
leases of all of the other office  tenants in the Building.  In the event of any
termination  of this  Lease  under this  Section  7.05(c),  Tenant  shall pay to
Landlord the amount,  if any, due in accordance with Section 7.06 below. 

     (d) (i) Within 45 days after Landlord has actual knowledge of any Casualty,
Landlord shall deliver to Tenant an estimate prepared by a reputable  contractor
selected by Landlord and  reasonably  acceptable  to Tenant  setting  forth such
contractor's estimate as to the time reasonably required to repair the damage in
order to make the Office Space no longer  Untenantable (other than any Long Lead
Work which the  Contractor  estimates will take more than 315 days from the date
of such Casualty to repair);  provided,  that if Landlord  shall fail to deliver
such  estimate  within said 45-day  period,  Tenant may  designate a  contractor
(subject to Landlord's reasonable approval thereof;  provided,  that if Landlord
fails to approve or disapprove any contractor designated by Tenant within 5 days
after the  giving of notice by  Tenant,  such  contractor  shall be deemed to be
approved by Landlord) to prepare the same (the  contractor  designated by either
Landlord or Tenant pursuant to this sentence is called the  "Contractor" and the
estimate prepared by the Contractor is called the "Estimate").  (ii) If at least
the lesser of (A) one full floor of the Building included in the Office Space or
(B) 25,000 contiguous rentable square feet of space in the Office Space shall be
rendered  Untenantable  by reason of a Casualty  and the period set forth in the
applicable Estimate exceeds 315 days from the date of such Casualty,  Tenant may
elect to terminate this Lease with respect to the Casualty  Terminated  Space by
notice (a  "Termination  Notice")  to  Landlord  given  not  later  than 30 days
following Tenant's receipt of such Estimate. (iii) If at least the lesser of (A)
one full  floor of the  Building  included  in the  Office  Space or (B)  25,000
contiguous  rentable  square feet of space in the Office Space shall be rendered
Untenantable  by  reason  of a  Casualty,  the  time  period  set  forth  in the
applicable Estimate does not exceed 315 days from the date of such Casualty, and
for any reason whatsoever Landlord shall not substantially complete the Required
Restoration  Work on or before the date (the "First  Outside Date") which is 410
days after the date of such  Casualty  (provided,  that the First  Outside  Date
shall be  extended  to the extent  that  Landlord  is  delayed in  substantially
completing the Required  Restoration Work by reason of Tenant Delay and/or Force
Majeure; provided, further, that any such extension of the First Outside Date by
reason of Force  Majeure  shall not exceed 60 days),  then Tenant shall have the
right to terminate this Lease with respect to the Casualty  Terminated  Space by
giving a Termination Notice to Landlord on or before the earlier to occur of (x)
the date that Landlord substantially  completes the Required Restoration Work or
(y) the date that is 30 days after the First Outside Date.  (iv) If at least the
lesser of (A) one full floor of the Building included in the Office Space or (B)
25,000  contiguous  rentable  square feet of space in the Office  Space shall be
rendered Untenantable by reason of a Casualty,  the time period set forth in the
applicable  Estimate  does  exceed 315 days from the date of such  Casualty  and
Tenant has not elected to terminate  this Lease under Section  7.05(d)(ii),  and
for any reason whatsoever Landlord shall not substantially complete the Required
Restoration  Work on or before the date (the  "Second  Outside  Date") that is 6
months after the date set forth in the applicable  Estimate as the date by which
the repair and  restoration  (other than any Long Lead Work which the Contractor
estimated  would  take  more  than 315 days  from the date of such  Casualty  to
repair) should reasonably be completed  (provided,  that the Second Outside Date
shall be extended if and to the extent that Landlord is delayed in substantially
completing the Required  Restoration  Work by reason of Tenant Delay,  but shall
not be extended for any other reason, including, without limitation, if Landlord
is so delayed by reason of Force  Majeure),  then Tenant shall have the right to
terminate this Lease with respect to the Casualty  Terminated  Space by giving a
Termination Notice to Landlord on or before the earlier to occur of (x) the date
that Landlord  substantially  completes the Required Restoration Work or (y) the
date that is 30 days after the Second Outside Date. (v) If Tenant timely gives a
Termination Notice pursuant to this Section 7.05(d),  this Lease shall terminate





with respect to the Casualty  Terminated Space on the 20th day after such notice
is given by Tenant and Tenant  shall vacate the  Casualty  Terminated  Space and
surrender the same to Landlord in accordance with the terms of this Lease.  Upon
any such termination,  Tenant's  liability for Fixed Rent and Additional Charges
hereunder  with respect to the Casualty  Terminated  Space shall cease as of the
date of such  termination,  and any prepaid  portion of Rent with respect to the
Casualty  Terminated  Space for any period  after such date shall be refunded by
Landlord  to  Tenant  within  30  days  after  such  termination  date.  Upon  a
termination  of this Lease with  respect to less than the entire  Office  Space,
there shall be a pro rata reduction of Tenant's Rent obligations to reflect such
partial  termination  and  Landlord  and  Tenant  shall  promptly  enter into an
instrument  evidencing such partial termination and the reduced rentable area of
the Office Space (such  rentable area to be  determined  in a manner  consistent
with the methods used in calculating the rentable area of the Premises initially
demised  under  this  Lease);  provided,  that the  failure  to enter  into such
instrument shall not affect the  effectiveness of such partial  termination.  In
the event of any termination of this Lease under this Section  7.05(d),  whether
as to all or a portion of the Premises, Tenant shall pay to Landlord the amount,
if any, due in accordance with Section 7.06 below. (vi) Anything to the contrary
contained in this Section 7.05(d) notwithstanding, if any Casualty occurs during
the last 3 years of the Term,  all  references  in this Section  7.05(d) to "315
days" and "410 days" shall be deemed to be replaced with the following number of
days (provided,  that such number of days shall not be extended even if Landlord
is delayed in substantially  completing the Required  Restoration Work by reason
of Force Majeure, but such number of days shall be extended if and to the extent
Landlord is delayed in substantially completing the Required Restoration Work by
reason of Tenant Delay):  (A) if such Casualty occurs during the 12-month period
commencing  on the date that is 3 years prior to the last day of the Term,  "240
days" and "365  days",  respectively;  (B) if such  Casualty  occurs  during the
12-month period  commencing on the date that is 2 years prior to the last day of
the Term,  "180 days" and "270  days",  respectively;  and (C) if such  Casualty
occurs  during  the last  12-months  of the Term,  "120  days"  and "180  days",
respectively.  (vii) Subject to Section 7.07, "Casualty Terminated Space" means,
at Tenant's election as specified in the applicable  Termination Notice,  either
(A) the entire Premises or (B) a portion of the Premises consisting of entire



floors of the  Building  (or so much of any  floor as shall  then be part of the
Premises);  provided, that in the case of any such partial termination,  (x) all
floors included within the Casualty Terminated Space shall be contiguous and (y)
the  Casualty  Terminated  Space  shall  consist of either (I) all or any of the
floors  which shall have been  rendered  Untenantable  by such  Casualty or (II)
either the highest or lowest  floor then  included  in the Office  Space and any
other  floor(s)  contiguous to such highest or lowest floor so long as the total
rentable area of the Casualty Terminated Space does not exceed the rentable area
of the portion of the Premises which was rendered Untenantable by such Casualty.
(viii) Time is of the essence  with respect to all of the time periods set forth
in this Section  7.05(d). 

     (e) If Landlord  terminates this Lease in accordance with Section  7.05(c),
Landlord  shall inform Tenant in Landlord's  termination  notice  whether or not
Landlord  intends  to  rebuild  the  Building  for use as a first  class  office
building.  If Landlord so notifies  Tenant that Landlord  intends to rebuild the
Building,  then Tenant shall have the right,  by notice given to Landlord within
30 days  after the  giving by  Landlord  of such  notice,  to reject  Landlord's
termination of this Lease.  If Tenant timely gives such rejection  notice,  then
(i) Landlord's termination notice shall be null and void and of no further force
and effect,  (ii)  anything  to the  contrary  contained  in this  Section  7.05
notwithstanding,  Tenant shall have no further right to terminate  this Lease on
account of such  Casualty and (iii) the Term shall be extended by a period which
is equal to the period commencing on the date of such Casualty and ending on the
date that  Landlord  notifies  Tenant  that the  Premises  are  tenantable.

     (f)  Landlord  shall not be  obligated  to repair or replace  the  Premises
(other than any Landlord  Obligation  Areas within the Premises) or any Tenant's
Fixtures or Tenant's Property,  notwithstanding  that Landlord may carry its own
insurance  covering  the same.  Tenant  shall look solely to its  insurance  for
recovery  of any  damage to or loss of the  Premises  (other  than any  Landlord
Obligation  Areas  within the  Premises)  or any  Tenant's  Fixtures or Tenant's
Property. Tenant shall notify Landlord promptly of any Casualty in the Premises,
unless Landlord has actual knowledge  thereof.  Tenant shall not be obligated to
repair or replace the Building or any portion  thereof  (other than the Premises
(but excluding any Landlord  Obligation  Areas within the Premises) and Tenant's
Fixtures),  notwithstanding that Tenant may carry its own insurance covering the
same.  Landlord shall look solely to its insurance for recovery of any damage to
or loss of the Building or any portion  thereof  (other than the  Premises  (but
excluding  any  Landlord  Obligation  areas  within the  Premises)  and Tenant's
Fixtures).  Anything to the contrary  contained  in this Lease  notwithstanding,
neither  Landlord  nor  Tenant  shall be  responsible  for any  property  damage
suffered  by the other party if and to the extent that such damage is covered by
any  insurance  carried by such other  party (or would have been so covered  had
such party carried the insurance required to be carried by such party under this
Lease), except that, to the extent so provided in Section 4.05(a),  Tenant shall
be  responsible  for certain  damage to the solar film  attached to the exterior
windows  of the  Premises. 





     (g) This Section 7.05 shall be deemed an express  agreement  governing  any
damage or destruction of the Premises by fire or other casualty, and Section 227
of the New York  Real  Property  Law  providing  for such a  contingency  in the
absence  of an  express  agreement,  and any  other  law of like  import  now or
hereafter in force,  shall have no  application. 

     (h) "Long Lead Work" means any item of repair to Tenant's Alterations which
is not a  stock  item  and  must be  specifically  manufactured,  fabricated  or
installed or is of such an unusual,  delicate or fragile  nature that there is a
substantial risk that (i) there will be a delay in its manufacture, fabrication,
delivery  or  installation,  or (ii) after  delivery,  such item will need to be
reshipped or  redelivered,  so that the item of work in question would delay the
completion of the standard items of such work even though the items of Long Lead
Work in question are (A) ordered together with the other items required for such
work and (B) then installed or performed  (after the  manufacture or fabrication
thereof) in order and sequence  that such Long Lead Work and other items of work
are  normally  installed  or  performed  in  accordance  with good  construction
practice.

     (i) If in case of a Casualty,  Landlord  shall be delayed in completing the
repair and restoration  that Landlord is obligated to perform under this Section
7.05 by reason of Force Majeure,  Landlord  shall promptly  notify Tenant of the
occurrence of such Force Majeure and, to the extent  possible,  Landlord's  good
faith estimate of the duration of such Force Majeure delays and, if requested by
Tenant from time to time,  Landlord shall update Tenant as to the status of such
Force Majeure  delays. 

     (j) In case  of any  Casualty  which  renders  all or part of the  Premises
Untenantable,  prior to the substantial completion of the repair and restoration
that Landlord is obligated to perform under this Section  7.05,  Landlord  shall
provide  Tenant and  Tenant's  contractors  access to the Premises to repair and
restore the Premises on the  following  terms and  conditions.  Tenant shall not
commence  work in any  portion of the  Premises  until the date  specified  in a
notice  from  Landlord  to Tenant  (which  notice  shall be given by Landlord to
Tenant as soon as the giving of such notice shall be feasible)  stating that the
repairs  required to be made by Landlord  have been or will be  completed to the
extent reasonably  necessary,  in the reasonable opinion of Landlord,  to permit
the repair and  restoration  of the portion of the  Premises  in  question  then
prudent to be performed in accordance with good  construction  practice  without
interference  with,  and  consistent  with the  performance  of, the repairs and
restoration, remaining to be performed by Landlord.

     7.06 Certain Termination  Payments. In the event of any termination of this
Lease as to all or any portion of the  Premises  pursuant  to Sections  4.04(c),
7.04,  7.05 or 10.03 (but excluding a termination  under Section 10.03 by reason
of an Eviction  that  results  from the willful  acts or (where  Landlord has an
affirmative  obligation to act pursuant to the terms of this Lease) omissions of
Landlord),  then (a) if such termination is with respect to all of the Premises,
Tenant  shall  pay to  Landlord  an amount  equal to the  excess of (i) all work
allowances (including,  without limitation,  the Allowances) theretofore paid by
Landlord  to  Tenant  over (ii) the costs  and  expenses  incurred  by Tenant in
connection with Tenant's  moving into and preparation for Tenant's  occupancy of
the  Premises  (including,  without  limitation,  all  soft  costs  incurred  in
connection  therewith,  but excluding all actual costs  incurred to purchase and
install Tenant's Property),  and (b) if such termination is with respect to less
than the entire  Premises,  Tenant  shall pay to Landlord an amount equal to the
excess of (i) the Deemed  Termination  Allowance for such terminated  space over
(ii) the costs and  expenses  incurred  by Tenant in  connection  with  Tenant's
moving into and  preparation  for Tenant's  occupancy of such  terminated  space
(including, without limitation, all soft costs incurred in connection therewith,
but  excluding  all actual  costs  incurred  to purchase  and  install  Tenant's
Property).  "Deemed Termination Allowance" means, with respect to any terminated
space,  an amount equal to the sum of (A) the product of (x) $45  multiplied  by
(y) the number of rentable square feet included in such terminated space that is
part of the Blocks and (B) any work  allowance  paid by  Landlord to Tenant with
respect to any portion of such  terminated  space that is not part of the Blocks
(such work allowance to be  appropriately  prorated based upon the rentable area
of such  terminated  space if such  work  allowance  was paid by  Landlord  with
respect to a larger space which  included such  terminated  space).  Any payment
required to be made under this  Section 7.06 shall be paid by Tenant to Landlord
(1) in the case of Tenant  exercising a right of termination,  together with the
giving of Tenant's notice of termination  (and any such notice shall be null and
void unless (I)  accompanied  by such payment or (II) such notice states that no
payment is required to be paid by Tenant under this Section 7.06) and (2) in the
case of any  termination  other than as  described  in clause  (1) above,  on or
before  the date that such  termination  becomes  effective;  provided,  that if
Tenant  claims  that no  payment  is  required  to be paid by Tenant  under this
Section 7.06,  Tenant shall so notify Landlord in Tenant's  termination  notice.
Any such  payment (or notice that no such  payment is required to be paid) shall
be accompanied by invoices or other evidence reasonably satisfactory to Landlord
establishing   the   amount  of  such   payment  or  that  no  payment  is  due.





Notwithstanding  the  foregoing,  if Tenant  timely  notifies  Landlord  that no
payment is required to be paid by Tenant  under this Section 7.06 and, as of the
date of such  notice,  Tenant  has  occupied  substantially  all of the Block or
Blocks in which the  terminated  space is located (or if such  terminated  space
consists of or includes Offer Space,  Tenant has occupied  substantially  all of
the applicable Offer Space), and Tenant informs Landlord thereof in such notice,
then Tenant shall not be required to deliver such invoices or other  evidence to
Landlord  together  with such notice;  provided,  that upon request by Landlord,
Tenant shall promptly  deliver such invoices or other  evidence to Landlord.  If
Landlord  disputes  the amount of any payment by Tenant  under this Section 7.06
and it is  subsequently  determined  that the  amount so paid by Tenant was less
than the amount due to Landlord hereunder, then the termination of this Lease as
to the applicable space shall  nevertheless be effective and Tenant shall pay to
Landlord the amount of such underpayment  together with interest at the Interest
Rate from the date such amount was first due from Tenant until paid.

     7.07  Termination  Rights  As To Sublet  Space.  Anything  to the  contrary
contained in Section 7.05(d) or 10.03 notwithstanding,  if (a) a Casualty occurs
and Tenant  would  have the right to  terminate  this  Lease as to the  Casualty
Terminated Space in accordance with Section 7.05(d) or if an Eviction occurs and
Tenant would have the right to terminate this Lease as to the  Terminated  Space
in accordance with Section 10.03 (in either case, without regard to this Section
7.07), (b) the space rendered  Untenantable by such Casualty or Eviction, as the
case may be, includes space that was occupied by a  non-Affiliated  subtenant of
Tenant at the time of such Casualty or Eviction, as the case may be, and (c) (i)
in the  case of any such  Casualty,  the  space  rendered  Untenantable  by such
Casualty  does not  include  at least the  lesser  of (x) one full  floor of the
Building included in the Office Space, which floor was occupied by Tenant and/or
any  Affiliated  subtenants of Tenant at the time of such Casualty or (y) 25,000
contiguous  rentable  square feet of space in the Office Space,  which space was
occupied by Tenant  and/or any  Affiliated  subtenants  of Tenant at the time of
such  Casualty  or (ii) in the case of any such  Eviction,  the  space  rendered
Untenantable  by such Eviction does not include  50,000 or more rentable  square
feet of the  Office  Space,  which  space  was  occupied  by Tenant  and/or  any
Affiliated  subtenants of Tenant at the time of such  Eviction,  then,  provided
that (1) in the case of any such Casualty,  the space rendered  Untenantable  by
such Casualty includes at least the lesser of (A) one full floor of the Building
included in the Office  Space,  which space was occupied by such  non-Affiliated
subtenant  of  Tenant  at the time of such  Casualty  or (B)  25,000  contiguous
rentable  square feet of space in the Office Space,  which space was occupied by
such  non-Affiliated  subtenant of Tenant at the time of such Casualty or (2) in
the case of any such Eviction,  the space rendered Untenantable by such Eviction
includes  50,000 or more rentable  square feet of the Office Space,  which space
was  occupied  by such  non-Affiliated  subtenant  of Tenant at the time of such
Eviction, Tenant shall only have the right to terminate this Lease in accordance
with Section 7.05(d) or 10.03, as applicable, with respect to the space that was
occupied by such non-Affiliated subtenant of Tenant at the time of such Casualty
or  Eviction,  as the case may be, and,  for  purposes of any such  termination,
"Casualty  Terminated Space" or "Terminated  Space",  as applicable,  shall mean
only such space.





                                   ARTICLE 8
                            Miscellaneous Provisions

     8.01 Notice. All notices, demands, consents, approvals, advices, waivers or
other communications (each, a "Notice") which may or are required to be given by
either  party to the other  under this Lease  shall be in  writing  and,  unless
otherwise  required by any Laws, shall be sent (a) by hand, (b) by United States
Mail, certified or registered,  postage prepaid, return receipt requested or (c)
by a nationally  recognized  overnight  carrier,  in each case  addressed to the
party to be  notified  at the  address  for such  party  specified  in the first
paragraph of this Lease (in the case of any Notice to Tenant,  to the  attention
of the Vice  President,  Facilities),  or to such other place in the continental
United States as the party to be notified may from time to time  designate by at
least 20 days' notice to the  notifying  party (with a copy, in the case of each
Notice  to  Landlord,  to  Landlord's  Managing  Attorney,  c/o  Olympia  & York
Companies  (U.S.A.),  237 Park Avenue, New York, New York 10017 and, in the case
of each  Notice to Tenant,  to the  attention  of the  General  Counsel,  at the
address for Tenant specified in the first paragraph of this Lease).  Each Notice
shall be deemed to have been given on the date such Notice is actually  received
as  evidenced  by a written  receipt  therefor,  and in the event of  failure to
deliver by reason of changed  address of which no Notice was given or refusal to
accept  delivery,  as of the date of such failure. 

     8.02 Building  Rules.  Tenant shall comply with, and Tenant shall cause its
licensees,  employees,  contractors, agents and (while on the Premises) invitees
to comply  with,  the rules of the  Building set forth in Exhibit C, as the same
may be reasonably modified or supplemented by Landlord from time to time for the
safety,  care  and  cleanliness  of  the  Premises  and  the  Building  and  for
preservation  of good order therein;  provided,  that in no event shall any such
modified or supplemented rule increase  Tenant's  obligations or reduce Tenant's
rights  under this Lease (in either  case,  other than to a de minimis  extent).
Landlord  shall not be obligated  to enforce the rules of the  Building  against
Tenant or any other tenant of the Building or any other party (unless  Tenant is
adversely  affected with respect to Tenant's use or occupancy of the Premises in
any  material  respect  and Tenant  notifies  Landlord  thereof,  specifying  in
reasonable  detail the manner in which  Tenant's  use or  occupancy  is being so
adversely  affected).  Unless Landlord shall willfully or negligently fail to so
enforce  said rules (and  Tenant's use or occupancy of the Premises is adversely
affected  in any  material  respect by reason of such  failure by  Landlord  and
Tenant notifies Landlord thereof,  specifying in reasonable detail the manner in
which Tenant's use or occupancy is being so adversely affected),  Landlord shall
have no  liability  to Tenant by reason of the  violation by any tenant or other
party of the rules of the Building. In no event shall Landlord enforce the rules
of the Building in a manner which  discriminates  against Tenant. If any rule of
the Building shall conflict with any provision of this Lease,  such provision of
this Lease shall  govern.

     8.03  Severability.  If  any  term  or  provision  of  this  Lease,  or the
application  thereof  to any  person  or  circumstances  shall to any  extent be
invalid or  unenforceable,  the remainder of this Lease,  or the  application of
such  provision to persons or  circumstances  other than those as to which it is
invalid or  unenforceable,  shall not be  affected,  and each  provision of this
Lease shall be valid and shall be  enforceable  to the extent  permitted by law.


     8.04 Certain Definitions.  (a) "Landlord" means only the owner, at the time
in  question,  of the  Building  or that  portion of the  Building  of which the
Premises  are a part,  or of a lease  of the  Building  or that  portion  of the
Building of which the Premises are a part,  so that in the event of any transfer
or transfers of title to the  Building or of  Landlord's  interest in a lease of
the Building or such portion of the Building, the transferor shall be and hereby
is relieved and freed of all  obligations  of Landlord under this Lease accruing
from and  after  the date of such  transfer,  and it  shall be  deemed,  without
further agreement,  that such transferee has assumed all obligations of Landlord
during the  period it is the holder of  Landlord's  interest  under this  Lease;
provided,  that any such  transferee  shall not be deemed  to have  assumed  any
liabilities of Landlord accruing prior to the date of such transfer,  except for
(i) any such liabilities set forth in sufficient detail to identify the claim by
Tenant in an estoppel  certificate  or other  notice given by Tenant to Landlord
within 30 days after Landlord notifies Tenant of such transfer, (ii) any amounts
to which Tenant is entitled under Section 2.05 in respect of Operating  Payments
made by Tenant for periods  prior to such  transfer  (and which amounts have not
been previously paid to Tenant),  but only if Tenant, on or before the Operating
Expense Cutoff Date,  delivers to such transferee a Tenant's  Statement  setting
forth in  reasonable  detail any such amounts  which Tenant claims to be due and
(iii) any  liabilities for unpaid tax refunds owed to Tenant pursuant to Section
2.04(f) in respect of periods prior to such transfer.  "Operating Expense Cutoff
Date"  means,  in the case of any transfer or transfers of title to the Building
or of Landlord's  interest in a lease of the Building or the applicable  portion
of the  Building,  the date that is the later of (A) 365 days after the last day
of the Operating  Year  immediately  preceding the Operating  Year in which such
transfer takes place (the "Preceding Operating Year") and (B) 180 days after the
date that Landlord delivers to Tenant (x) a Landlord's Statement with respect to





the Preceding  Operating Year, and (y) a notice stating that Tenant's failure to
deliver a Tenant's  Statement under Section  8.04(a)(ii)  shall result in Tenant
being  estopped  from  further  claiming any refund for the period to which such
Landlord's  Statement  relates  and for any prior  periods.  In case of any such
transfer,  Landlord shall reasonably cooperate with Tenant in making the Records
with  respect to  Operating  Years prior to such  transfer  which Tenant has the
right to examine in accordance  with Section  2.05(l)(i)  available to Tenant in
accordance with Section 2.05(l)(i).

     (b) "Landlord shall have no liability to Tenant" or words of similar import
mean that Tenant is not entitled to terminate this Lease,  or to claim actual or
constructive  eviction,  partial,  or total,  or to  receive  any  abatement  or
diminution  of  Rent,  or to be  relieved  in any  manner  of  any of its  other
obligations  under this Lease,  or to be compensated for loss or injury suffered
or to enforce any other right or kind of liability  whatsoever  against Landlord
under or with respect to this Lease or with respect to Tenant's use or occupancy
of the  Premises. 

     (c)  Wherever  in  this  Lease  it is  provided  that  a  party  shall  not
unreasonably  withhold  a  consent  or  approval,  such  party  shall  also  not
unreasonably delay such consent or approval.

     8.05 Quiet Enjoyment.  During the Term,  Tenant shall and may peaceably and
quietly have,  hold and enjoy the  Premises,  subject to the other terms of this
Lease and to Superior Leases and Superior Mortgages.

     8.06 Limitation of Landlord's Personal Liability.  Tenant shall look solely
to Landlord's  interest in the Project for the recovery of any judgment  against
Landlord,  and no other  property or assets of Landlord or Landlord's  partners,
officers,  directors,  shareholders or principals, direct or indirect, disclosed
or  undisclosed,  shall be  subject  to  levy,  execution  or other  enforcement
procedure for the  satisfaction  of Tenant's  remedies  under or with respect to
this Lease. For purposes of the preceding sentence,  "Landlord's interest in the
Project" shall be deemed to include (a) all rent or other consideration received
by Landlord  (and/or by the lessor under the Ground Lease;  provided,  that such
lessor is Landlord or an Affiliate of Landlord) in respect of the Building,  (b)
proceeds of a sale (net of transaction  costs),  financing or  refinancing  (but
only to the extent the  proceeds of a financing  or  refinancing  exceed (i) the
amount of any indebtedness  that was paid with the proceeds of such financing or
refinancing  plus (ii) all transaction  costs  associated with such financing or
refinancing)  of the  Building or the Project  (or any portion  thereof),  or of
Landlord's (or such lessor's)  estate or interest  therein,  or in any property,
equipment or improvements in the Project (or any portion  thereof),  and (c) any
insurance proceeds or condemnation awards relating to any portion of the Project
(to the  extent  in  excess  of any  restoration  costs  and net of all costs of
obtaining such proceeds or awards); provided, in each case that Tenant (A) shall
have delivered a notice to Landlord asserting a claim for a breach of Landlord's
obligations  under this Lease prior to the receipt by Landlord  (or such lessor)
of such  rent or  other  consideration,  proceeds  or  awards,  (B)  shall  have
commenced an  appropriate  proceeding  against  Landlord  asserting  such breach
within 6 months  after the date such notice was  delivered  to Landlord  and (C)
shall be diligently prosecuting such claim to completion,  and Tenant shall have
the right to look to such rent, consideration, proceeds or awards only as to the
subject matter of such action.

     8.07 Counterclaims.  If Landlord commences any summary proceeding or action
for  nonpayment of Rent or to recover  possession of the Premises,  Tenant shall
not  interpose  any  counterclaim  of any  nature  or  description  in any  such
proceeding or action,  unless Tenant's failure to interpose such counterclaim in
such  proceeding or action would result in the waiver of Tenant's right to bring
such claim in a separate proceeding under applicable law.

     8.08 Survival. All obligations and liabilities of Landlord or Tenant to the
other which accrued before the expiration or other termination of this Lease and
all  such  obligations  and  liabilities  which  by their  nature  or under  the
circumstances  can only be, or by the provisions of this Lease may be, performed
after such  expiration or other  termination,  shall  survive the  expiration or
other  termination  of  this  Lease.  Without  limiting  the  generality  of the
foregoing,  the  rights  and  obligations  of the  parties  with  respect to any
indemnity under this Lease, and with respect to Tax Payments, Operating Payments
and any other amounts payable under this Lease,  shall survive the expiration or
other  termination  of this Lease. 

     8.09 Arbitration.  (a) Except as otherwise expressly set forth elsewhere in
this Lease, each party shall have the right to submit all disputes regarding the
interpretation  of the provisions of this Lease and all  determinations  made by
any party under this Lease to arbitration, which shall be conducted in Manhattan
in accordance with the Commercial  Arbitration  Rules (Expedited  Procedures) of
the AAA,  except that the  provisions  of this Section 8.09 shall  supersede any
conflicting  or  inconsistent  provisions  of said rules.  The party  requesting
arbitration  shall do so by  giving  notice to that  effect to the other  party,





specifying in said notice the nature of the dispute, and that said dispute shall
be determined in the City of New York, by a panel of 3 arbitrators in accordance
with this  Section  8.09.  Landlord  and  Tenant  shall each  appoint  their own
arbitrator  within 5 days after the giving of notice by either party.  If either
Landlord or Tenant  shall fail timely to appoint an  arbitrator,  the  appointed
arbitrator shall select the second arbitrator, who shall be impartial,  within 5
days after such party's  failure to appoint.  The arbitrators so appointed shall
meet and shall,  if  possible,  determine  such matter  within 10 days after the
second arbitrator is appointed and their  determination  shall be binding on the
parties.  If for any reason  such two  arbitrators  fail to agree on such matter
within  such  period of 10 days,  then  either  Landlord  or Tenant may  request
ENDISPUTE/JAMS  (or any organization which is the successor thereto or any other
arbitration or mediation organization,  including,  without limitation, the AAA,
which will provide an impartial arbitrator that is an active or retired state or
federal judge) to appoint an arbitrator who shall be impartial  within 7 days of
such request and both parties shall be bound by any  appointment  so made within
such 7-day period.  The third arbitrator (and the second  arbitrator if selected
by the other  arbitrator as provided above) only shall subscribe and swear to an
oath fairly and  impartially to determine such dispute.  Within 7 days after the
third  arbitrator has been appointed,  each of the first two  arbitrators  shall
submit their respective  determinations  to the third arbitrator who must select
one or the other of such determinations (whichever the third arbitrator believes
to be correct or  closest  to a correct  determination)  within 7 days after the
first two arbitrators  shall have submitted their respective  determinations  to
the third  arbitrator,  and the  selection so made shall in all cases be binding
upon the parties,  and judgment upon such decision may be entered into any court
having  jurisdiction.  In the event of the  failure,  refusal or inability of an
arbitrator to act, a successor shall be appointed within 10 days as hereinbefore
provided.  Except as provided in the next sentence,  in the case of all disputes
to be determined by arbitration in accordance  with this Section 8.09, the third
arbitrator  shall be an active  or  retired  federal  or New York  State  judge.
Notwithstanding the foregoing,  (i) in the case of an arbitration  involving the
determination  of Fair Market Rent or the fair market  rental value of any Offer
Space  or (ii) if no  arbitration  or  mediation  organization  shall be able to
appoint an active or retired  state or federal  judge to serve as  arbitrator of
the  dispute  in  question  within  the 7-day  period  specified  above for such
appointment, then either Landlord or Tenant may request AAA to appoint the third
arbitrator who shall be  experienced in the issue with which the  arbitration is
concerned and shall have been actively  engaged in such field for a period of at
least  10 years  before  the date of his or her  appointment  hereunder.  If the
second  arbitrator is appointed by the first arbitrator as provided above,  such
second  arbitrator  shall  also be  experienced  in the  issue  with  which  the
arbitration  is  concerned  and have been  actively  engaged in such field for a
period of at least 10 years before the date of his or her appointment hereunder.
The third  arbitrator  shall  apply  the laws of the State of New York,  without
giving effect to any principles of conflicts of laws. The third arbitrator shall
schedule a hearing where the parties and their advocates shall have the right to
present evidence, call witnesses and experts and cross-examine the other party's
witnesses and experts. Either party shall have the right, at any time, to make a
motion to the third  arbitrator to grant summary  judgment as to any question of
law.

     (b) Except with respect to an arbitration  involving the  determination  of
Fair Market Rent or the fair market rental value of any Offer Space (which shall
be governed by the  provisions  of Sections  9.02 and 1.06,  respectively),  the
losing  party shall pay the fees and  expenses of all  arbitrators  acting under
this Section 8.09.

     (c)  Landlord and Tenant  agree to sign all  documents  and to do all other
things  necessary to submit any such matter to arbitration and further agree to,
and hereby do,  waive any and all rights  they or either of them may at any time
have to revoke their  agreement  hereunder to submit to arbitration and to abide
by the decision rendered thereunder.  For such period, if any, as this agreement
to arbitrate  is not legally  binding or the  arbitrator's  award is not legally
enforceable,  the provisions  requiring  arbitration shall be deemed deleted and
matters to be determined by arbitration  shall be subject to litigation.

     (d) If there shall be  submitted to  arbitration  in  accordance  with this
Section  8.09 any dispute  concerning  the payment of any Rent by Tenant  (other
than any dispute under Section  2.05(l)(ii),  which dispute shall be governed by
the provisions of said Section),  pending the resolution of such dispute, Tenant
shall pay the disputed Rent to Landlord.  If the arbitrator shall determine that
such disputed payment was not required to be paid by Tenant,  Landlord shall pay
to Tenant,  within 30 days  after such  determination,  such  disputed  payment,
together  with interest  thereon at the Prime Rate from the date the  applicable
payment was made by Tenant  through the date of payment by Landlord  pursuant to
this Section 8.09(d);  provided, that if the arbitrator shall determine that the
disputed  payment  was  charged to Tenant by  Landlord  in bad faith,  then such
payment by Landlord shall include interest thereon at the Interest Rate (instead
of at the Prime Rate).





     8.10 No Offer. The submission by Landlord of this Lease in draft form shall
be solely for Tenant's consideration and not for acceptance and execution.  Such
submission  shall have no binding force or effect and shall confer no rights nor
impose any obligations,  including brokerage obligations, on either party unless
and until both  Landlord  and Tenant shall have  executed a lease and  duplicate
originals  thereof shall have been  delivered to the  respective  parties.

     8.11 Captions;  Construction. The table of contents, captions, headings and
titles in this Lease are  solely  for  convenience  of  reference  and shall not
affect its  interpretation.  This Lease shall be construed without regard to any
presumption or other rule requiring  construction against the party causing this
Lease to be drafted.

     8.12 Amendments.  This Lease may not be altered, changed or amended, except
by an instrument in writing signed by the party to be charged.

     8.13  Broker.  (a) Each party  represents  to the other that such party has
dealt with no broker  other than EREIM and  Newmark & Company  Real  Estate Inc.
(collectively, the "Brokers") in connection with this Lease or the Building, and
each party  shall  indemnify  and hold the other  harmless  from and against all
loss, cost,  liability and expense (including,  without  limitation,  reasonable
attorneys' fees and disbursements)  arising out of any claim for a commission or
other  compensation by any broker other than the Brokers who alleges that it has
dealt with the indemnifying party in connection with this Lease or the Building.
Landlord  shall  enter into a  separate  agreement  with  EREIM (the  "Brokerage
Agreement") which provides that, if this Lease is executed and delivered by both
Landlord and Tenant, Landlord shall pay to EREIM a commission (the "Commission")
to be agreed upon  between  Landlord  and EREIM,  subject to, and in  accordance
with, the terms and conditions of such agreement. 

     (b) If and to the extent that (i) the Commission or any portion  thereof is
not paid by Landlord when due in accordance with the provisions of the Brokerage
Agreement  and (ii)  Tenant  delivers  to  Landlord a release,  signed by EREIM,
releasing  Landlord  from any  obligation to pay to EREIM the unpaid amount then
overdue (the "Unpaid Commission"),  then Tenant shall be entitled to a credit (a
"Commission  Rent Credit")  against  installments  of Rent next coming due under
this Lease in an amount equal to the Unpaid  Commission,  together with interest
on the  Unpaid  Commission  at the Prime  Rate plus 6% from the date the  Unpaid
Commission was due in accordance with the provisions of the Brokerage  Agreement
to the  date  such  amount  is  credited  against  Rent in  accordance  with the
provisions of this Section 8.13(b). If Tenant delivers a release from EREIM with
respect to any Unpaid  Commission,  Landlord  shall have the right,  at any time
prior to Tenant  crediting  against Rent in accordance with this Section 8.13(b)
the full amount of such Commission Rent Credit, to pay to Tenant an amount equal
to the  remaining  Commission  Rent  Credit  to  which  Tenant  is  entitled  in
accordance  with this  Section  8.13(b)  in respect  of such  Unpaid  Commission
(together  with interest to the date of such payment) and, upon Landlord  paying
such amount to Tenant,  Tenant shall have no further right to any credit against
Rent with respect to such Unpaid  Commission.  Nothing contained in this Section
8.13(b) shall be construed to impose any  obligation on Tenant to pay any Unpaid
Commission.  If Landlord  fails to pay any  installment  of the  Commission in a
timely manner in accordance with the provisions of the Brokerage  Agreement,  in
no event shall there be any  duplication  of interest  payable by Landlord  with
respect  to  such  installment  of the  Commission  pursuant  to  the  Brokerage
Agreement and this Section 8.13(b) or any other provision of this Lease.

     8.14  Merger.  Tenant  acknowledges  that  Landlord has not made and is not
making, and Tenant, in executing and delivering this Lease, is not relying upon,
any warranties,  representations,  promises or statements,  except to the extent
that the same are  expressly  set forth in this Lease.  This Lease  embodies the
entire  understanding  between the parties  with  respect to the subject  matter
hereof, and all prior agreements, understanding and statements, oral or written,
with respect thereto are merged in this Lease.

     8.15 Successors.  This Lease shall be binding upon and inure to the benefit
of Landlord,  its successors and assigns, and shall be binding upon and inure to
the benefit of Tenant,  its successors,  and to the extent that an assignment is
permitted under this Lease, Tenant's assigns.

     8.16  Applicable  Law.  This Lease shall be governed  by, and  construed in
accordance with, the laws of the State of New York, without giving effect to any
principles of conflicts of laws.





     8.17 No Development  Rights.  Tenant  acknowledges that this Lease does not
grant to  Tenant  any  development  rights,  air  rights  or  comparable  rights
appurtenant to the Project, and Tenant consents,  without further consideration,
to any utilization of such rights by Landlord. Tenant shall promptly execute and
deliver any instruments which may be reasonably requested by Landlord, including
instruments merging zoning lots, evidencing such acknowledgment and consent. The
provisions  of this  Section  8.17 shall be  construed  as an express  waiver by
Tenant of any interest  Tenant may have  (arising out of Tenant  having  entered
into this  Lease) as a "party in  interest"  (as such term is defined in Section
12-10  Zoning  Lot of the  Zoning  Resolution  of the  City of New  York) in the
Project.

     8.18 Parking. During the Term, Landlord (or any person or entity designated
by Landlord to operate the indoor  parking  spaces in the  Building)  shall make
available  to  Tenant,  and  Tenant  shall  hire from  Landlord  (or  Landlord's
designated operator), on a non-reserved basis, 6 of the indoor parking spaces in
the Building  ("Tenant's Parking Spaces");  provided,  that if Tenant terminates
this  Lease with  respect  to less than all of the  Premises  or  exercises  the
Renewal Option with respect to less than all of the Premises or if Tenant leases
Offer Space in accordance  with Section 1.06 or if the number of indoor  parking
spaces in the Building shall be increased, the number of Tenant's Parking Spaces
shall be appropriately reduced or increased,  as the case may be, so that Tenant
shall  have  Tenant's  Operating  Share  of the  indoor  parking  spaces  in the
Building.  Landlord and Tenant  acknowledge that on the date of this Lease there
are 25 indoor parking  spaces in the Building.  Tenant shall pay to Landlord (or
Landlord's  designated  operator) monthly, as an Additional Charge, on the first
day of each month,  the  Building's  established  charges for  Tenant's  Parking
Spaces  (which  charges  are  subject  to change  from time to time and shall be
comparable to those charged by  neighboring  garages which are comparable to the
Building's  garage).  Landlord (or Landlord's  designated  operator) may require
Tenant to use reasonable  visible  identification  (e.g.,  bumper decal,  window
sticker, or pass) to evidence authorized use of Tenant's Parking Spaces.  Tenant
shall from time to time furnish  Landlord (or  Landlord's  designated  operator)
with a list of the persons that Tenant has  permitted  to use  Tenant's  Parking
Spaces,  together with such other corresponding  identification  (e.g.,  license
plates, car models or addresses) as Landlord (or Landlord's designated operator)
may require.  Tenant's use of Tenant's  Parking  Spaces shall be subject to such
reasonable  rules and  regulations  as may from time to time be  promulgated  by
Landlord in accordance  with the provisions of this Lease (which may include the
obligation  to leave  the car keys as  designated  by  Landlord  (or  Landlord's
designated  operator)).  Except as may otherwise be required pursuant to Section
3.03(b),  Landlord  shall not be obligated to police the use of any elevators or
any other points of access which may connect  Tenant's  Parking  Spaces with any
other areas of the Building.  Landlord  shall have no  responsibility  for loss,
theft or damage,  howsoever  caused,  to person or  property  arising  out of or
attributable to Tenant's Parking Spaces, except to the extent the same arise out
of the  gross  negligence  or  willful  misconduct  of  Landlord  or  Landlord's
contractors or employees (subject, however, to Section 7.03).

     8.19 Emergency  Generator.  (a) To the extent permitted by Law, Tenant may,
at Tenant's sole cost and expense,  install an emergency generator,  at Tenant's
option,  in any of the following  locations:  (i) on the Building setback on the
17th floor of the  Building in a location  designated  by Tenant and  reasonably
satisfactory to Landlord,  (ii) alongside  Landlord's emergency generator in the
pit located on the  sub-cellar  floor of the Building or (iii) in the mechanical
equipment  room on the 8th floor of the Building in the  location  shown on that
certain drawing dated 6/20/95,  Sketch No. SKM-3,  prepared by Edwards and Zuck,
P.C. and titled "8th Floor MER Room Proposed Generator Loc.",  together with all
required controls,  wiring,  distribution and other ancillary equipment normally
associated  therewith;  provided,  that any fuel tank  shall be  located  on the
sub-cellar level of the Building  adjacent to Landlord's fuel tanks.  Tenant may
replace or modify such equipment (and modify  Tenant's  electrical  distribution
system  connected to such generator) from time to time during the Term,  subject
to the  provisions  of  this  Lease.

     (b) In any case where,  pursuant to the provisions of this Lease, Tenant is
permitted  to install  equipment  on a setback of the  Building,  or in the case
where Tenant is permitted to install an emergency generator in the sub-cellar or
8th floor  mechanical  equipment room in accordance  with Section 8.19(a) above,
Tenant's  installation  of such equipment  shall be done as an  Alteration,  and
shall constitute a Material Alteration.  Any installation,  maintenance,  repair
and  replacement  of such  equipment  shall  be done at  Tenant's  expense,  and
Landlord  shall have no  liability  in respect  thereof.  No  installation  on a
Building  setback  may be  closer  than 5 feet  to the  parapet  wall,  and  any
installation  shall  provide for adequate  drainage and decking and be done in a
manner to  provide  that such  equipment  shall  not cause  unreasonable  noise,
unreasonable  vibration  or  other  unreasonable  interference  with  any  other
occupants of the Building or the operation of the Building. Any reinforcement of
the setback  area or other  reasonable  requirements  of  Landlord's  structural





engineer  required as a result of Tenant's  installation  shall be  performed by
Landlord  at  Tenant's  reasonable  expense.  Landlord  may at all times use the
setback area,  sub-cellar or 8th floor  mechanical  equipment room in connection
with any  cleaning,  maintenance,  repair  or  operation  of the  Building,  and
Landlord  shall have no liability  to Tenant by reason  thereof,  provided  that
Landlord does not interfere with the operation of Tenant's equipment. Subject to
Sections 7.03 and 7.05(f), Tenant shall be responsible for all damage to persons
or property  which results from Tenant's use of the setback area,  sub-cellar or
8th  floor  mechanical  equipment  room  except  to  the  extent  caused  by the
negligence or willful  misconduct of any Landlord  Indemnified  Party.  Landlord
makes no  warranty  to Tenant as to the  permissibility  under Laws of using the
setback,  sub-cellar  or 8th floor  mechanical  equipment  room for any  purpose
permitted under this Lease or as to the  suitability of the setback,  sub-cellar
or 8th floor mechanical equipment room for any such purpose. Tenant shall comply
with all Laws  applicable  to the equipment so installed and Tenant's use of the
setback area,  sub-cellar or 8th floor mechanical  equipment room.  Tenant shall
secure and keep in full force and effect,  from and after the time Tenant begins
installation of such  equipment,  such  supplementary  insurance with respect to
such equipment as Landlord may reasonably require,  provided that the same shall
not be in excess of that which would  customarily  be required from time to time
by landlords of buildings of similar  class and  character in New York City with
respect to similar  installations.  

     (c) Landlord shall give Tenant  reasonable  access to the setback area, the
sub-cellar space or the 8th floor mechanical equipment room, as the case may be,
so as to permit  Tenant to install,  operate,  maintain,  repair and replace its
emergency generator and to connect the same to the Premises;  provided, that, in
any such case,  Tenant shall be accompanied by a representative  of Landlord who
shall be made available to Tenant at reasonable  times upon  reasonable  advance
notice from Tenant. If Tenant installs the emergency generator in the sub-cellar
space,  Landlord may at any time and from time to time during the Term (but only
after such prior notice,  if any, as is reasonable under the  circumstances)  at
Tenant's  reasonable  expense,   temporarily   disconnect  and  remove  Tenant's
generator  if  reasonably  required  in order to access the  Building  emergency
generator or other emergency  generators at such location,  in which event, upon
completion of Landlord's work,  Landlord shall, at Tenant's  reasonable expense,
re-install the same in substantially its original location.

     8.20  Signage.  (a) Subject to the  provisions of Section  8.20(b),  Tenant
shall have the right to place signs  containing  Tenant's  name in the  Building
lobby and on the  exterior of the  Building;  provided,  that (i) in the case of
such Building  lobby  signage,  the same shall be installed as part of the Lobby
Renovation Work only in the locations shown on the applicable  drawings referred
to in Exhibit W and shall meet the design  criteria set forth in the  applicable
specifications  referred  to in Exhibit W and (ii) in the case of such  exterior
signage, the same shall be installed only in the locations shown, and shall meet
the design criteria set forth, on the drawings referred to on Exhibit V attached
hereto  (provided  that  Tenant  may  use a style  of  lettering  other  than as
described on Exhibit V subject to the reasonable approval of Landlord). All such
signage   (including,   without   limitation,   such  Building   lobby  signage,
notwithstanding that the same is being installed as part of the Lobby Renovation
Work)  shall be  installed,  maintained  and  repaired  by  Landlord at Tenant's
reasonable expense.

     (b) The  provisions  of  Section  8.20(a)  shall be null and void and of no
further force or effect, and Landlord shall have the right to remove any signage
theretofore  installed pursuant to Section 8.20(a), if (i) ELAS is no longer the
Tenant  under this Lease,  (ii) ELAS and/or any  Affiliated  subtenants  of ELAS
shall be  occupying  less than 300,000  rentable  square feet in the Building or
(iii) the Term shall expire or terminate.  "ELAS" means (A) The  Equitable  Life
Assurance  Society of the United States,  the original  Tenant under this Lease,
(B) any entity which,  pursuant to Section 5.01(b) above, directly or indirectly
succeeds to the interest of The Equitable Life  Assurance  Society of the United
States as Tenant under this Lease,  and/or (C) any  Affiliate  of The  Equitable
Life Assurance Society of the United States or of any entity described in clause
(B)  above. 

     (c) Upon the expiration or earlier  termination of the Term (or earlier, if
required by Landlord  under  Section  8.20(b)),  any signage of Tenant  shall be
removed by Landlord and Tenant shall reimburse Landlord for any reasonable costs
incurred by  Landlord to remove such  signage and to repair or restore the areas
from which such  signage  was removed  (ordinary  wear and tear  excepted). 

     (d) Subject to the provisions of Section 8.20(e),  Landlord shall not grant
to any other tenant the right to place exterior signage containing such tenant's
name on the Sixth Avenue or 52nd Street sides of the  Building;  provided,  that
Landlord  may grant to  retail  tenants  the right to place on the Sixth  Avenue
and/or 52nd  Street  sides of the  Building  exterior  signage,  so long as such
signage (i) is in keeping  with the  character  of the  Building,  (ii) does not
diminish  the impact of Tenant's  exterior  signage and (iii) is in keeping with





the standards of retail  signage in comparable  buildings in the vicinity of the
Building. The restrictions on retail signage in the preceding sentence shall not
apply to retail signage existing at the Building on the date of this Lease.

     (e) The  provisions  of  Section  8.20(d)  shall be null and void and of no
further force or effect and Landlord shall have the right to grant to any tenant
the right to place any exterior  signage on the Sixth Avenue  and/or 52nd Street
sides of the  Building (i) if (A) ELAS is no longer the Tenant under this Lease,
(B) ELAS and/or any  Affiliated  subtenants of ELAS shall be occupying less than
300,000  rentable  square feet in the Building,  or (C) the Term shall expire or
terminate and (ii) during the last 18 months of the Term.

     (f)  Notwithstanding  the  foregoing,  if (i) the  provisions  of  Sections
8.20(a)  and  8.20(d)  shall  become  null  and void  because  ELAS  and/or  any
Affiliated  subtenants of ELAS fail to occupy at least 300,000  rentable  square
feet in the  Building,  (ii) such failure  constitutes  the first time that ELAS
and/or  any  Affiliated  subtenants  of  ELAS  failed  to  meet  such  occupancy
requirement  and  (iii)  at a later  date  during  the  Term,  ELAS  and/or  any
Affiliated subtenants of ELAS shall again be occupying at least 300,000 rentable
square feet in the Building,  then,  provided Landlord shall not have previously
granted  the  signage  rights  granted to ELAS  pursuant  to Section  8.20(a) to
another tenant and shall not then be engaged in active negotiations with another
tenant to do so (provided,  that,  for so long as this Section  8.20(f) shall be
relevant,  Landlord  shall not have the  right to so grant to any  other  tenant
exterior  signage in the locations shown on the plans attached hereto as Exhibit
U unless, at the time such right is granted to such tenant, such tenant occupies
in the  Building  at least the amount of rentable  square feet  occupied by ELAS
and/or any  Affiliated  subtenants  of ELAS in the  Building at such time),  the
provisions  of  Sections  8.20(a)  and  8.20(d)  shall  be  reinstated.   Tenant
acknowledges  that the  reinstatement  of Tenant's rights under Sections 8.20(a)
and 8.20(d) pursuant to the preceding sentence is a one-time right.

     8.21 Lobby Renovation.  (a) For purposes of this Lease, the following terms
shall have the following meanings: "Lobby Renovation Work" means,  collectively,
the Phase I Lobby Renovation Work and the Phase II Lobby Renovation Work. "Phase
I Lobby  Renovation  Work" means the work shown on the  drawings  referred to in
Exhibit W annexed hereto, to the extent such drawings identify the work shown on
such drawings to be part of the Phase I Lobby  Renovation Work;  provided,  that
Landlord shall have the right to change such work after having received Tenant's
consent  thereto if such consent is required  pursuant to Section 8.21(e) below.
"Phase II Lobby Renovation  Work" means the work shown on the drawings  referred
to in Exhibit W annexed  hereto,  to the extent such drawings  identify the work
shown  on such  drawings  to be part of the  Phase  II  Lobby  Renovation  Work;
provided,  that  Landlord  shall have the right to change such work after having
received  Tenant's  consent  thereto if such  consent is  required  pursuant  to
Section  8.21(e) below.  "Phase I Target Date" means August 15, 1996;  provided,
that  the  Phase I Target  Date  shall  be  postponed  one day for each day that
Landlord is delayed in  substantially  completing  the Phase I Lobby  Renovation
Work by reason of either Force Majeure or Tenant Delay; provided,  further, that
if Tenant fails substantially to move into the Block A Space on or before August
15, 1996,  then the Phase I Target Date shall be postponed  one day for each day
occurring in the period  commencing on August 16, 1996 through and including the
date that is 30 days after Tenant has substantially moved into the Block A Space
and Tenant notifies  Landlord of the same. "Phase II Target Date" means December
31, 1997; provided, that the Phase II Target Date shall be postponed one day for
each day that Landlord is delayed in substantially completing the Phase II Lobby
Renovation  Work by reason of either Force  Majeure or Tenant  Delay;  provided,
further,  that the Phase II Target Date shall be postponed  one day for each day
that the Phase I Target Date is postponed  beyond August 15, 1996 as provided in
the  definition of "Phase I Target Date". 

     (b) Landlord,  at Landlord's expense (except as provided in Section 8.20(a)
above with respect to the  installation  of Tenant's  Building  lobby  signage),
shall  perform  the  Lobby  Renovation  Work;  provided,  that  Tenant  shall be
responsible  for the  installation  of the security  desks in Tenant's  elevator
lobbies and Tenant shall reimburse Landlord,  in accordance with Section 4.01(d)
above, for Landlord's  actual costs incurred to perform the interior finishes to
the security desk areas (it being  understood that Landlord shall be responsible
for the cost of exterior finishes to such areas).  Landlord shall  substantially
complete  the  Phase I Lobby  Renovation  Work on or prior to the Phase I Target
Date and the Phase II Lobby  Renovation  Work on or prior to the Phase II Target
Date.  For purposes of this Section 8.21, the Phase I Lobby  Renovation  Work or
the Phase II Lobby  Renovation  Work,  as the case may be, shall be deemed to be
substantially  completed  on the date upon which  such work has been  completed,
other than minor details or adjustments to such work.





     (c) If Landlord  shall fail  substantially  to complete  either the Phase I
Lobby Renovation Work on or before the Phase I Target Date or the Phase II Lobby
Renovation  Work on or before the Phase II Target  Date,  then as Tenant's  sole
remedy for such failure of Landlord, Tenant shall be entitled to an abatement of
Rent in the amount set forth in the next sentence  during the period (the "Lobby
Abatement  Period")  from the day after the Phase I Target  Date or the Phase II
Target Date, as applicable,  to and  including,  the date upon which the Phase I
Lobby  Renovation  Work or the Phase II Lobby  Renovation  Work, as  applicable,
shall be  substantially  completed.  The Rent to be abated  under the  preceding
sentence  shall consist of (i) during the first 180 days of any Lobby  Abatement
Period, all Fixed Rent, Tax Payments and Operating Payments and (ii) thereafter,
in any month (appropriately prorated in the case of a partial month), the excess
of (A) Fixed Rent over (B) the sum of Tenant's Tax Share of Taxes for such month
plus Tenant's  Operating Share of Operating Expenses for such month (i.e., after
the initial 180 day period  described in clause (i) above to and  including  the
last day of the  applicable  Lobby  Abatement  Period,  but subject to the other
provisions of this Lease, Tenant shall be obligated to pay the amounts described
in this clause (B) (the "Tax and Operating Payments")).  If, as of the first day
of any Lobby  Abatement  Period,  the  Relevant  Date with  respect to any space
included in the  Premises  has  occurred,  but the Rent  Commencement  Date with
respect  to such space has not  occurred,  then,  in lieu of the rent  abatement
provided in this Section  8.21(c),  the Rent  Commencement  Date with respect to
such  space  shall be  delayed  for the  number of days  occurring  in the Lobby
Abatement  Period,  except  that  from and  after  the  181st day that such Rent
Commencement  Date  is so  postponed  to and  including  the  last  day of  such
postponement, but subject to the other provisions of this Lease, Tenant shall be
obligated to pay the Tax and Operating Payments. 

     (d) If requested  by Landlord at any time on or after July 1, 1996,  Tenant
shall notify Landlord,  within 10 days after such request, whether or not Tenant
reasonably  expects  to be able to move  into  substantially  all of the Block A
Space on or before August 15, 1996, and, if not, of Tenant's reasonable estimate
of the date on which Tenant  expects to be moved into  substantially  all of the
Block A Space.  

     (e)  Landlord  shall not change the Lobby  Renovation  Work in any material
respect without Tenant's prior consent,  which consent shall not be unreasonably
withheld  if such  change  does not  diminish  the scope or quality of such work
(except to a de minimis  extent). 

     (f) Tenant shall provide  Landlord  with access to the Secondary  Concourse
Space as  reasonably  required  by  Landlord  for the  performance  of the Lobby
Renovation Work.

     8.22 Force  Majeure.  If, by reason of strike,  lockouts  or other labor or
industrial  troubles,  governmental  pre-emption  in connection  with a national
emergency,  any rule, order or regulation of any governmental  agency applicable
to the Building or to the party  obligated to perform,  conditions  of supply or
demand that are affected by war or other national, state or municipal emergency,
fire or other  casualty,  acts of God such as (by way of example only)  tornado,
earthquake,  hurricane,  washout or storm, civil disturbance,  act of the public
enemy, riot, sabotage,  blockade, embargo, explosion or any other cause beyond a
party's  reasonable  control,  whether  or not  similar  to  any  of the  causes
hereinabove stated (collectively,  "Force Majeure"),  such party shall be unable
to perform any  obligation  that such party is obligated  to perform,  then such
party's  obligation  to perform  shall be excused for the duration of such Force
Majeure,  and,  except as otherwise set forth in this Lease,  this Lease and the
other party's rights and obligations  hereunder shall not be affected,  impaired
or excused.  Notwithstanding  anything to the contrary contained in this Section
8.22,  any  party's  failure  timely to fulfill  an  obligation  required  to be
fulfilled by such party under this Lease shall not be excused or deemed to be an
event of Force Majeure if (a) said obligation is an obligation to pay money, (b)
said failure  shall be  attributable  to such  party's  lack of funds,  (c) said
obligation  relates  to  Tenant's  obligation  to  vacate  the  Premises  or any
applicable  portion  thereof  at the end of the  term of this  Lease  applicable
thereto (in which case  Sections  4.03 and 6.10 shall apply  thereto) or (d) the
provisions  of this  Lease  expressly  limit the  amount  of time by which  such
obligation  shall be  excused by reason of Force  Majeure.

     8.23  Memorandum  of Lease.  Upon the  request of Tenant,  Landlord  shall,
contemporaneously  with the execution of this Lease,  execute,  acknowledge  and
deliver to Tenant a short form or memorandum  of this Lease in  recordable  form
and otherwise in form reasonably satisfactory to Landlord. Recording, filing and
like charges imposed by any  governmental  agency to effect such recording shall
be paid by Tenant.  Upon the  termination  of this Lease,  Tenant shall execute,
acknowledge  and deliver to Landlord all necessary  instrument(s)  in recordable
form  evidencing a  termination  of this Lease and  sufficient  to discharge any
memorandum hereof of record, and Tenant shall pay for all recording,  filing and
like charges imposed by any governmental  agency to effect such recording. 





     8.24 Major Tenant Rights. (a) "Major Tenant Rights" means: (i) the right to
lease,  and the obligation of Landlord to deliver,  the Block C Space;  (ii) the
rights  granted under Section 1.06;  (iii) the right to use the Premises for the
Identified  Ancillary  Uses;  (iv)  the  right to  initiate  an  examination  of
Landlord's  Records  with  respect  to any  Operating  Year up to 4 years  after
Landlord  delivers a Landlord's  Statement with respect to such Operating  Year;
(v) the right to require  Landlord to consent to a sublease or assignment  which
is a Qualifying  Transaction;  (vi) the right to require Landlord to execute and
deliver a non-disturbance and attornment agreement with respect to a Second Tier
Sublease; (vii) the right to an abatement of certain Rent payments under Section
8.21(c);  (viii) the right to  maintain a  partitioning  of the  elevator  banks
servicing  the 7th through the 15th floors of the Building and interior  signage
and a dedicated  security desk adjacent to such elevator bank and  turnstiles at
the  entrances to such  elevator  banks;  (ix) the right to maintain a dedicated
security desk and interior  signage  adjacent to the elevator bank servicing the
15th  through  the 22nd floors of the  Building;  (x) the rights  granted  under
Section 10.01(a);  (xi) the rights granted under Section 10.03; (xii) the rights
granted  under  Section  10.05;  (xiii) the right to an  abatement of Rent under
Section  10.02  prior to the 3rd  Business  Day after  notice  from Tenant of an
Eviction;  (xiv) the right to terminate  this Lease  pursuant to Section 7.05 or
10.03 with respect to less than the entire Premises; and (xv) the rights granted
under  Section  3.04(e). 

     (b) If this Lease  terminates prior to the Block C Relevant Date and Tenant
has  granted the Major  Tenant  Right  described  in Section  8.24(a)(i)  to any
subtenant  that has received a  non-disturbance  and  attornment  agreement from
Landlord (or who Landlord  elects to have attorn to Landlord in accordance  with
Section 5.04(d)(iii) above), then such Major Tenant Right shall be null and void
with  respect  to such  subtenant  if such  subtenant  at any time  prior to the
delivery of the Block C Space leases less than 300,000  rentable  square feet of
the Office Space. 

     (c) The Major Tenant Rights described in Section  8.24(a)(ii),  (vii), (x),
(xiii)  and (xv) shall be null and void if at any time the  Office  Space  shall
consist  of  less  than   300,000   rentable   square  feet  in  the   Building.
Notwithstanding the foregoing, so long as the Office Space shall consist of less
than 300,000,  but more than 100,000,  rentable  square feet then (i) the rights
granted under  Section 1.06 shall  continue in effect but the term "Offer Space"
shall mean only the one floor in the Building  that is contiguous to the highest
floor then comprising the Office Space and the one floor in the Building that is
contiguous to the lowest floor then comprising the Office Space; provided,  that
(A) in no event shall Offer Space  include any floor in the  Building  below the
7th floor or above the 23rd floor and (B) if such floor  that is  contiguous  to
such highest or lowest floor then comprising the Office Space becomes  Available
and Tenant leases the same in accordance with Section 1.06,  "Offer Space" shall
not  include  the floor that is  contiguous  to such  floor  leased by Tenant in
accordance  with  Section  1.06 (for  example,  if the Office  Space at any time
consists of floors 14 through 21,  then "Offer  Space"  shall mean only the 13th
and  22nd  floors  and if  Tenant  leases  the 13th  floor or the 22nd  floor in
accordance with Section 1.06,  "Offer Space" would not include the 12th floor or
the 23rd  floor,  as the case may be) and  (ii)  the  right to an  abatement  of
certain Rent payments  under Section  8.21(c) shall  continue in effect but such
abatement  shall be limited to 25% of the Fixed Rent, Tax Payments and Operating
Payments payable during the period that Tenant is entitled to such abatement (or
if Tenant is entitled under Section 8.21(c) to a deferral of a rent commencement
date,  the  same  shall be  deferred  by only 1/4 of one day for each day in the
applicable Lobby Abatement Period).

     (d) The Major Tenant Right described in Section 8.24(a)(viii) shall be null
and void if at any time more than one floor of floors 11 through 15 is leased by
a tenant  other than Tenant or an Affiliate of Tenant and the Major Tenant Right
described in Section 8.24(a)(ix) shall be null and void if at any time more than
one floor of floors 15 through 22 is leased by a tenant  other than Tenant or an
Affiliate of Tenant.  If either or both of such Major Tenant  Rights become null
and void in accordance  with the preceding  sentence,  Landlord and Tenant shall
reasonably  cooperate  with each  other to  establish  a modified  security  and
interior  signage  program for Tenant so that Tenant  shall  continue to receive
security and interior signage rights commensurate with the security and interior
signage rights customarily  granted by Landlord to tenants leasing the number of
rentable  square  feet then  included  in the Office  Space in a  multi-tenanted
elevator  bank.  If Tenant at any time no longer leases all of floors 11 through
15 (but  continues  to lease  at least 4 of such  floors)  or all of  floors  15
through  22 (but  continues  to lease at  least 7 of such  floors),  so that the
applicable  Major Tenant Right shall not become null and void in accordance with
this clause (d),  Tenant shall cooperate with any tenant who leases such portion
of such floor so that such tenant shall have access to its premises 24 hours per
day, 365 days per year,  subject only to  reasonable  security  requirements  of
Tenant which do not render such portion of such floor unreasonably  difficult to
market and lease. 





     (e) If at any time the Office  Space  shall  consist  of less than  300,000
rentable  square feet in the  Building,  the Major  Tenant  Right  described  in
Section  8.24(a)(iii)  shall  be null  and  void,  except  with  respect  to any
Identified  Ancillary  Uses  existing  in the Office  Space at the time that the
Office Space first consisted of less than 300,000 rentable square feet.

     (f) If at any time the Office  Space  shall  consist  of less than  300,000
rentable  square feet in the  Building,  the Major  Tenant  Right  described  in
Section 8.24(a)(iv) shall be null and void; provided, that (i) during such time,
if any,  that the  Office  Space  consists  of less than  300,000,  but at least
200,000,  rentable  square  feet,  Tenant  shall have the right to  initiate  an
examination  of Landlord's  Records with respect to any  Operating  Year up to 3
years  after  Landlord  delivers a  Landlord's  Statement  with  respect to such
Operating Year, (ii) during such time, if any, that the Office Space consists of
less than 200,000, but at least 100,000, rentable square feet, Tenant shall have
the right to initiate such  examination up to 2 years after Landlord  delivers a
Landlord's  Statement  with respect to any Operating  Year and (iii) during such
time,  if any,  that the Office  Space  consists of less than  100,000  rentable
square feet,  Tenant shall have the right to initiate such  examination  up to 1
year  after  Landlord  delivers  a  Landlord's  Statement  with  respect  to any
Operating  Year.  Landlord's  time  period  to  deliver a  corrected  Landlord's
Statement for any  Operating  Year or a corrected Tax Statement for any Tax Year
shall be reduced from 4 years  commensurate  with the reduction in Tenant's time
period to initiate an examination of Landlord's Records pursuant to this Section
8.24(f). 

     (g) The Major Tenant Rights described in Section  8.24(a)(v) and (vi) shall
be null and void if at any time the Office  Space  consists of less than 200,000
rentable  square  feet.  During the Term,  no subtenant of Tenant shall have the
Major  Tenant  Right  described  in Section  8.24(a)(v),  unless such  subtenant
subleases  from  Tenant not less than  200,000  rentable  square  feet of Office
Space.  If this Lease  terminates  and Tenant has granted  either or both of the
Major Tenant Rights  described in Section  8.24(a)(v)  and (vi) to any subtenant
that has received a non-disturbance  and attornment  agreement from Landlord (or
who  Landlord  elects to have  attorn to  Landlord in  accordance  with  Section
5.04(d)(iii)  above),  then such Major Tenant Rights shall be null and void with
respect to such subtenant if such subtenant at any time leases less than 300,000
rentable square feet of the Office Space. 

     (h) The Major  Tenant  Rights  described in Section  8.24(a)(xi)  and (xiv)
shall be null and void if at any time the  Office  Space  shall  consist of less
than 100,000  rentable square feet.

     (i) If this Lease  terminates and Tenant has granted the Major Tenant Right
described  in  Section   8.24(a)(xii)  to  any  subtenant  who  has  received  a
non-disturbance  and attornment  agreement from Landlord (or who Landlord elects
to have attorn to Landlord in accordance with Section  5.04(d)(iii) above), then
such Major Tenant Right shall be null and void with respect to such subtenant if
at any time such subtenant  leases less than 100,000 rentable square feet of the
Office Space; provided,  that, if and to the extent Tenant granted the following
rights to such subtenant in its sublease, such subtenant shall have the right to
set-off against the rent payable to Landlord (i) such  subtenant's  share of any
tax  refund to which such  subtenant  may become  entitled  pursuant  to Section
2.04(f) if such tax refund is not timely paid to such  subtenant  in  accordance
with Section  2.04(f) and (ii) any amount  required to be reimbursed by Landlord
to such subtenant in accordance  with Section 2.05 with respect to any Operating
Payment made by such subtenant to Landlord,  if such reimbursement is not timely
made by Landlord to such subtenant in accordance with Section 2.05.

     8.25 Lobby Artwork. (a) Tenant shall install in the Building lobby the work
consisting  of 10 panels and known as the "America  Today" murals by Thomas Hart
Benton (the "Benton").  Tenant,  at Tenant's  expense,  shall be responsible for
deinstalling  the Benton  from its present  location  at 787 Seventh  Avenue and
moving the Benton to the Building.  Landlord shall reimburse  Tenant,  within 30
days  after  submission  of an  invoice  therefor,  for the  reasonable  cost of
installing  the  Benton in the  Building.  The  Benton  shall be moved  to,  and
installed in, the Building by Tenant, under the supervision of Tenant's curator,
upon completion of the Lobby  Renovation  Work. The Benton shall be installed in
the  locations in the Building  lobby shown on the drawing  designated  SK7-7-2,
dated June 7, 1995,  prepared by David Kenneth Specter & Associates,  Architects
P.C.  Exhibit U annexed  hereto  shows  where  each panel of the Benton is to be
located,  except for the panel  known as  "Outreaching  Hands",  which  shall be
located in the Building  lobby in a location  reasonably  acceptable to Landlord
and Tenant.





     (b) Tenant shall not be  permitted to deinstall  and remove the Benton from
the  Building  before  the  later of (i) the date  that is one year  before  the
scheduled  Expiration  Date of the  initial  Term and  (ii) the date  that is 12
months after Tenant  notifies  Landlord of Tenant's  intention to deinstall  and
remove the Benton from the Building.  The  provisions of the preceding  sentence
shall apply notwithstanding any earlier expiration or termination of this Lease.
Notwithstanding the foregoing (A) if this Lease shall terminate by reason of the
default of Landlord (it being  understood  that any termination of this Lease by
reason  of the  occurrence  of  any  Force  Majeure  event  (including,  without
limitation,  any Casualty)  shall not constitute the default of Landlord),  then
Tenant shall have the right at any time,  upon notice to Landlord,  to deinstall
and remove the Benton from the Building and (B) if this Lease shall terminate or
expire for any reason as to the entire  Premises,  Landlord  may,  upon not less
than 12 months prior notice to Tenant,  require  Tenant to deinstall  and remove
the Benton from the Building.  Any removal of the Benton from the Building shall
be at Tenant's expense.

     (c)  Landlord,  at Landlord's  expense,  shall install as part of the Lobby
Renovation  Work  glass  barriers  approximately  3 feet in  height  and  motion
detectors,  in each case to protect  the panels of the Benton  installed  on the
north and south sides of the lobby (but not the panels over the escalator).  The
glass  barriers  shall be  substantially  as shown on the drawing  designated as
SK7-7-1,  dated July 18, 1995,  prepared by David Kenneth  Specter & Associates,
Architects P.C.

     (d) For so long as the  Benton  is in the  Building,  Tenant,  at  Tenant's
expense, shall (i) provide all maintenance and repair of the Benton necessary or
appropriate  to preserve the Benton in excellent  condition  and (ii) maintain a
fine arts policy covering the Benton with sufficient limits to cover 100% of the
replacement  value of the  Benton  and  including  a waiver  of  subrogation  in
accordance  with  Section  7.03  above.  If  Tenant  shall at any  time  deem it
reasonably  necessary to provide  security  measures for the Benton in excess of
those  described  in  Section  8.25(c)  above and on  Exhibit L annexed  hereto,
Landlord  shall  provide  such  security  measures  and Tenant  shall  reimburse
Landlord for the reasonable  cost thereof within 30 days after demand.  Landlord
and Tenant shall cooperate to agree on the scope of any such additional security
measures.  Tenant shall have no claim against Landlord by reason of the security
specifications  described  in  Section  8.25(c)  above and on  Exhibit L annexed
hereto,  or any excess security  measures  provided by Landlord  pursuant to the
preceding  sentence,  being  insufficient  to prevent damage to the Benton.

     (e) Tenant  represents  to Landlord  that Tenant is the owner of the Benton
and that the  moving of the  Benton to the  Building,  the  installation  of the
Benton in the Building  lobby and the other  provisions  of this Section 8.25 do
not violate the  provisions of any agreement to which Tenant or any Affiliate of
Tenant  is  a  party.   Anything  to  the  contrary   contained  in  this  Lease
notwithstanding, the Benton shall in all events remain Tenant's property.

     (f) The  provisions  of this Section 8.25 shall  survive the  expiration or
earlier termination of this Lease.





                                   ARTICLE 9
                                 Renewal Right

     9.01 Renewal  Right.  (a) Provided  that on the date Tenant  exercises  the
Renewal Option (i) this Lease shall not have been terminated,  (ii) Tenant shall
not be in default under this Lease after notice and beyond all applicable  grace
periods and (iii) Tenant shall occupy at least 50% of the Premises, Tenant shall
have the option (the "Renewal  Option") to extend the term of this Lease for, at
Tenant's  option,  either an  additional 5 year period or an  additional 10 year
period (the "Renewal Term"),  to commence at the expiration of the initial Term.
(b) The Renewal Option shall be exercised  with respect to, at Tenant's  option,
(i) the  entire  Premises,  (ii) all space then  included  in the  Premises  and
located on floors 7 through 15 or (iii) all space then  included in the Premises
and  located  on floors 15  through 22 (the  "Renewal  Premises"),  and shall be
exercisable by Tenant giving notice to Landlord (the "Renewal  Notice") at least
18 months before the last day of the initial  Term.  Tenant shall specify in the
Renewal  Notice the duration of the Renewal Term and the space to be included in
the Renewal  Premises.  Time is of the essence with respect to the giving of the
Renewal Notice.

     9.02 Renewal  Rent and Other Terms.  (a) The Renewal Term shall be upon all
of the terms and conditions set forth in this Lease,  except that (i) Fixed Rent
shall be as determined  pursuant to the further provisions of this Section 9.02;
(ii) Tenant  shall accept the Renewal  Premises in its "as is"  condition at the
commencement  of the Renewal Term, and any provisions of this Lease with respect
to Landlord's Work,  payment of a work allowance and any abatement of Fixed Rent
and Additional  Charges (relating only to Tenant's initial  construction  period
with respect to any space comprising the Premises, i.e., the period prior to the
rent  commencement  date for any such space) shall not be applicable  during the
Renewal  Term;  (iii) Tenant shall have no option to renew this Lease beyond the
expiration  of the  Renewal  Term;  (iv)  all  references  in this  Lease to the
"Premises" shall be deemed to refer to the "Renewal Premises",  and (v) Tenant's
Tax Share and  Tenant's  Operating  Share shall be  recalculated  to reflect the
rentable area of the Renewal Premises (such rentable area to be determined based
on the measurements set forth in Exhibit H annexed hereto). 

     (b) The annual  Fixed Rent for the Renewal  Premises  for the Renewal  Term
shall be the Fair Market Rent  therefor  multiplied  by the Renewal  Percentage.
"Fair Market  Rent" means the fixed annual rent that,  as of the date that is 18
months before the  commencement  of the Renewal Term, a willing lessee would pay
and a willing  lessor would accept for the Renewal  Premises  during the Renewal
Term in an arms-length transaction,  taking into account all relevant factors at
the time in question.  "Renewal Percentage" means (i) if the Renewal Term is for
5 years, 97.5% and (ii) if the Renewal Term is for 10 years, 95%.

     (c) If Tenant timely  exercises the Renewal  Option,  Landlord shall notify
Tenant  (the  "Rent  Notice")  within 30 days  after  Landlord's  receipt of the
Renewal Notice of Landlord's  determination of the Fair Market Rent ("Landlord's
Determination"),  which Rent  Notice  shall  state that if Tenant  fails to give
Tenant's Notice within 30 days after Tenant's receipt of the Rent Notice, Tenant
shall be deemed to have accepted Landlord's  Determination.  Tenant shall notify
Landlord ("Tenant's Notice"),  within 30 days after Tenant's receipt of the Rent
Notice,  whether Tenant  accepts or disputes  Landlord's  Determination,  and if
Tenant  disputes  Landlord's  Determination,  Tenant's  Notice  shall  set forth
Tenant's  determination of the Fair Market Rent ("Tenant's  Determination").  If
Tenant fails to give Tenant's Notice within such 30 day period,  Tenant shall be
deemed to have  accepted  Landlord's  Determination.  If Landlord  fails to give
Landlord's  Determination within 30 days after Landlord's receipt of the Renewal
Notice,  Tenant shall have the right,  at any time prior to Tenant's  receipt of
Landlord's  Determination,  to give to Landlord a notice  setting forth Tenant's
Determination,  which  notice  shall  state  that  if  Landlord  fails  to  give
Landlord's Determination within 30 days after Landlord's receipt of such notice,
Landlord  shall be deemed to have  accepted  Tenant's  Determination.  If Tenant
timely gives such notice setting forth Tenant's Determination in accordance with
the  preceding  sentence and  Landlord  fails to give  Landlord's  Determination
within 30 days after Landlord's  receipt of Tenant's  Notice,  Landlord shall be
deemed to have accepted  Tenant's  Determination. 

     (d) If Tenant timely  disputes  Landlord's  Determination  and Landlord and
Tenant fail to agree as to the Fair Market Rent within 20 days after  Landlord's
receipt of Tenant's  Determination  (or if Tenant gives  Tenant's  Determination
prior to  Landlord  giving  Landlord's  Determination  as provided in clause (c)
above and thereafter Landlord timely gives Landlord's Determination and Landlord
and  Tenant  fail to agree as to the  Fair  Market  Rent  within  20 days  after
Tenant's receipt of Landlord's  Determination),  then the Fair Market Rent shall
be  determined  as  follows:  Such  dispute  shall be  resolved  by  arbitration
conducted  in  accordance  with  the Real  Estate  Valuation  Arbitration  Rules
(Expedited  Procedures)  of the AAA,  except that the provisions of Section 8.09
shall supersede any conflicting or  inconsistent  provisions of said rules.  The
fees and expenses of any  arbitration  of Fair Market Rent shall be borne by the
parties  equally,  but each party shall bear the expense of its own  arbitrator,
attorneys and experts and the additional expenses of presenting its own proof.


     (e)  If  Tenant  disputes  Landlord's  Determination  (or,  if  applicable,
Landlord disputes Tenant's Determination) and if the final determination of Fair
Market  Rent shall not be made on or before the first day of the  Renewal  Term,
then, pending such final determination,  Tenant shall pay, as Fixed Rent for the
Renewal  Term,  an amount  equal to the  applicable  Renewal  Percentage  of the
average of Landlord's  Determination and Tenant's Determination.  If, based upon
the final determination of the Fair Market Rent, the Fixed Rent payments made by
Tenant for such  portion of the Renewal  Term were (i) less than the Fair Market
Rent therefor, Tenant shall pay to Landlord the amount of such deficiency within
30 days  after  demand  therefor  or (ii)  greater  than  the Fair  Market  Rent
therefor,  Landlord  shall  credit  the  amount of such  excess  against  future
installments  of Fixed Rent and/or  Additional  Charges  payable by Tenant. 

     (f) Notwithstanding the foregoing  provisions of this Article 9, if, at any
time after Tenant's  delivery of the Renewal Notice and before the  commencement
of the Renewal Term,  this Lease shall be  terminated,  then such Renewal Notice
shall be null and void and of no further  force and effect and Tenant shall have
no further right or option to extend the Term.





                                   ARTICLE 10
                       Self-Help; Rent Abatement; Set-Off

     10.01 Tenant's Right To Perform Landlord's Obligations.  (a) If (i) for any
reason,  including,  without  limitation,  Force Majeure,  there is a failure to
furnish any of the services  which  Landlord is required to furnish  pursuant to
this Lease, or to make any repairs or replacements which Landlord is required to
make pursuant to the terms of this Lease, or to perform any other  obligation of
Landlord  under this  Lease,  and as a result  thereof  the  conduct of Tenant's
normal business operations in the Premises (or a material portion thereof) shall
be  materially  impaired  (any  or all of the  foregoing  hereinafter  sometimes
referred to as an  "Interruption"),  (ii) the curing of such Interruption  would
require work to be  performed,  or otherwise  affect any space,  in the Landlord
Obligation Areas or elsewhere  outside of the Premises,  (iii) either (A) Tenant
obtains the decision of an arbitrator  in  accordance  with Section 8.09 that an
Interruption  has  occurred  and  Landlord  does  not  immediately   after  such
arbitration  decision  commence and diligently  prosecute  action to remedy such
Interruption or (B) Landlord, in bad faith, fails to comply with the arbitration
procedures  set forth in Section  8.09,  then,  in any such event,  and upon the
giving of 5 days notice to Landlord  (which  notice shall  expressly  state that
Tenant intends to exercise its self-help  remedy in accordance with this Section
10.01(a)),  Tenant shall have the right (but not the  obligation) to furnish any
such  Landlord's  services  or to make any such  repairs or  replacements  which
Landlord  shall have  failed to make,  or to perform  such other  obligation  of
Landlord as Landlord shall have failed to perform.  Landlord hereby  irrevocably
appoints Tenant as Landlord's agent, coupled with an interest,  for the sole and
limited purpose of permitting  Tenant access to areas of the Building outside of
the Premises to the extent necessary to perform, in accordance with this Section
10.01(a),  any  obligation  or furnish  any service  that  Landlord so failed to
perform.  If at any time Tenant becomes entitled in accordance with this Section
10.01(a) to cure any Interruption and, thereafter, Landlord prevents Tenant from
exercising its right to cure such Interruption,  then the parties agree that, in
such case, damages would be an inadequate remedy and Tenant shall be entitled to
injunctive relief or specific performance in order to enable Tenant to cure such
Interruption.  If (x) Tenant  becomes  entitled in accordance  with this Section
10.01(a) to cure any Interruption, (y) in order to cure such Interruption Tenant
must obtain access to another  tenant's  premises,  and (z) after  compliance by
Tenant with all  requirements  set forth in such tenant's lease regarding access
thereto for Landlord and its agents,  such tenant  prevents Tenant from entering
its premises in breach of such tenant's  lease,  then Landlord shall enforce all
of its rights and  remedies  against  such  tenant in order to permit  Tenant to
enter  such  tenant's  premises  in order  to cure  such  Interruption.  Without
limiting the generality of any other provision of this Lease,  Tenant shall have
no right to perform any  obligation  or furnish any service  that  Landlord  has
failed to perform or furnish,  the curing of which  failure will require work to
be performed,  or otherwise affect any space in the Landlord Obligation Areas or
elsewhere  outside the Premises unless such failure results in an  Interruption,
and,  in the  case of an  Interruption,  Tenant's  sole  right to  perform  such
obligation  or  furnish  such  service  shall be as set  forth  in this  Section
10.01(a).  Nothing  contained  in this  Article 10 shall be  construed to permit
Tenant to cause  Landlord's  managing  agent for the  Building  to be removed or
replaced. 

     (b)  If  (i)  any  Interruption  shall  occur,  (ii)  the  curing  of  such
Interruption  would not require work to be  performed,  or otherwise  affect any
space, in the Landlord Obligation Areas or elsewhere outside of the Premises and
(iii) after notice thereof by Tenant to Landlord,  Landlord does not immediately
commence  action to  remedy  such  Interruption,  or if so  commenced,  does not
continue such action with reasonable  diligence,  and complete the same within 7
days or, in the case of emergency,  within 2 days,  then, in any such event, and
upon the giving of 5 days notice to Landlord (which notice shall expressly state
that Tenant  intends to exercise its self-help  remedy in  accordance  with this
Section 10.01(b)) or, in the case of emergency,  upon the giving of such notice,
oral or written, as may be reasonable under the circumstances, Tenant shall have
the right (but not the obligation) to furnish any such Landlord's services or to
make any such repairs or replacements  which Landlord shall have failed to make,
or to perform such other obligation of Landlord as Landlord shall have failed to
perform. 

     (c) If (i) for any reason,  including,  without limitation,  Force Majeure,
there is a failure to furnish any of the services  which Landlord is required to
furnish  pursuant to this Lease,  or to make any repairs or  replacements  which
Landlord is required to make pursuant to the terms of this Lease,  or to perform
any other  obligation of Landlord  under this Lease,  (ii) such failure does not
result in an  Interruption,  (iii) the curing of such failure  would not require
work to be performed,  or otherwise affect any space, in the Landlord Obligation
Areas or elsewhere  outside of the Premises,  (iv) such failure continues for 30
days  after  notice by Tenant to  Landlord;  provided,  that if the cure of such
failure cannot with due diligence be performed  within such 30-day period,  such
30-day  period  shall be extended  for so long as Landlord  shall be  diligently





prosecuting the  performance of such cure and (v) such failure  continues for 10
days after a second notice by Tenant to Landlord  (which notice shall  expressly
state that Tenant  intends to exercise its self-help  remedy in accordance  with
this  Section  10.01(c)),  then  Tenant  shall  have  the  right  (but  not  the
obligation) to furnish any such Landlord's  services or to make any such repairs
or  replacements  which  Landlord  shall have failed to make, or to perform such
other  obligation of Landlord as Landlord  shall have failed to perform.

     (d) If Tenant  exercises  its self-help  remedy in accordance  with clauses
(a),  (b) or (c) of  this  Section  10.01,  Landlord  shall  pay to  Tenant  the
reasonable costs incurred by Tenant in furnishing such Landlord's services which
Landlord failed to furnish or making such repairs or replacements which Landlord
failed to make or performing  such other  obligations of Landlord which Landlord
failed to perform,  as the case may be,  together  with interest at the Interest
Rate  (unless  Landlord  shall have been  unable to perform  the  obligation  in
question by reason of Force Majeure, in which case such interest shall be at the
Prime  Rate)  from the date of the  expenditure  by Tenant to the date that such
costs plus interest shall have been paid to Tenant, within 30 days after receipt
by Landlord of a detailed  statement as to the amount of such costs. If Landlord
notifies  Tenant  within the 30-day period  described in the preceding  sentence
that in lieu of making such  payment to Tenant,  Landlord  shall allow Tenant to
credit  against the next  installments  of Rent to come due any amounts to which
Tenant may be entitled  under this Section  10.01(d),  then,  subject to Section
10.05(b), Tenant shall so credit such amounts.

     (e) For all purposes of this Article 10, a material portion of the Premises
shall mean at least 5,000 contiguous rentable square feet of the Office Space or
at  least  10,000  rentable  square  feet of the  Office  Space  (regardless  of
contiguity). 

     (f) If and to the extent that Tenant  successfully  exercises its self-help
remedy in  accordance  with this  Section  10.01,  Tenant shall have no right to
terminate this Lease in accordance  with Section 10.03 on account of the failure
by Landlord to perform the  obligation  with respect to which  Tenant  exercises
such self-help remedy. If Landlord fails to perform any of its obligations under
this Lease by reason of Force Majeure and Tenant  exercises its self-help remedy
in accordance with this Section 10.01 with respect thereto,  then such self-help
remedy  (including  Tenant's right to  reimbursement  in accordance with Section
10.01(d)  above) and, if  applicable,  any rent  abatement  which  Tenant may be
entitled to pursuant to Section 10.03 shall be Tenant's sole remedies in respect
of Landlord's failure to perform such obligation. 10.02 Tenant Abatement Rights.
If, for any reason,  including,  without  limitation,  Force Majeure (but not by
reason of (a) a  Casualty  or (b) any act or (where  Tenant  has an  affirmative
obligation to act pursuant to the terms of this Lease) omission of Tenant or any
person  claiming  through  or under  Tenant or any of their  respective  agents,
employees,  contractors or (while in the Premises) invitees), there is a failure
to furnish any of the services which Landlord is required to furnish pursuant to
this Lease, or to make any repairs or replacements which Landlord is required to
make  pursuant to this Lease,  or to perform  any other  obligation  of Landlord
under this Lease or if Landlord  performs any repair,  replacement,  alteration,
addition, improvement or installation in or about the Premises which Landlord is
required or permitted to make under this Lease  (other than in  connection  with
the exercise by Landlord of its self-help  remedy set forth in Section 4.08) and
as a result of any of the foregoing all or any material  portion of the Premises
shall be  Untenantable  (an  "Eviction")  for 1 Business  Day after  notice from
Tenant,  then Fixed Rent and the Additional  Charges payable under Sections 2.04
and 2.05 shall  abate  solely  with  respect to the  portion or  portions of the
Premises  that are  Untenantable  from the day after such one Business Day until
such space is no longer  Untenantable. 

     10.03 Tenant Termination  Rights. (a) If, by reason of an Eviction,  50,000
or more  rentable  square  feet of the  Office  Space are  Untenantable  (A) for
reasons  other than Force Majeure for 60 or more  consecutive  days after notice
from Tenant to Landlord, (B) for reasons other than Force Majeure for 90 or more
days in any consecutive  12-month period (such reference to 90 days being deemed
to refer to the  number of days  that the  applicable  space is so  Untenantable
after   Tenant  has  given   Landlord   notice  of  each   occurrence   of  such
Untenantability) or (C) as a result of Force Majeure for 365 or more consecutive
days after notice from Tenant to Landlord (such 60, 90 and 365 day periods to be
extended  for  up to an  additional  90  days  during  which  time  Landlord  is
diligently prosecuting to cure the cause of such Untenantability),  then in each
such case Tenant  may,  by notice  given to Landlord on or before the earlier to
occur of (x) the  date  that  the  applicable  portion  of the  Office  Space is
rendered  tenantable  and (y) the date that is 30 days after the end of such 60,
90 or 365 day period (as so  extended),  as  applicable  (time of the  essence),
terminate this Lease, at Tenant's option,  with respect to the Terminated Space.
If Tenant  timely gives a  termination  notice in  accordance  with this Section
10.03,  this Lease shall  terminate with respect to the Terminated  Space on the
20th day after  such  notice is given by Tenant  and  Tenant  shall  vacate  the
Terminated Space and surrender the same to Landlord in accordance with the terms




of this Lease. Upon any such termination,  Tenant's liability for Fixed Rent and
Additional Charges hereunder with respect to the Terminated Space shall cease as
of the date of such termination, and any prepaid portion of Rent with respect to
the  Terminated  Space for any  period  after  such date  shall be  refunded  by
Landlord to Tenant within 30 days after Landlord receives  Tenant's  termination
notice.  Upon a  termination  of this Lease with respect to less than the entire
Premises,  there shall be a pro rata  reduction of Tenant's Rent  obligations to
reflect such partial  termination and the reduced  rentable area of the Premises
(such  rentable area to be determined  in a manner  consistent  with the methods
used in calculating  the rentable area of the Premises  initially  demised under
this Lease) and  Landlord  and Tenant shall  promptly  enter into an  instrument
evidencing such partial  termination;  provided,  that the failure to enter into
such instrument shall not affect the effectiveness of such partial  termination.
In the event of any termination of this Lease under this Section 10.03,  whether
as to all or a portion of the Premises, Tenant shall pay to Landlord the amount,
if any, due in accordance with Section 7.06 above.  Tenant acknowledges that, in
the case of an Eviction,  Tenant's sole rights to terminate this Lease by reason
of such Eviction are as expressly set forth in this Section  10.03(a) and Tenant
hereby  waives  all  other  rights  at  law  or in  equity  (including,  without
limitation,  any right to claim a constructive eviction) to terminate this Lease
by reason  of such  Eviction;  provided,  that  this  sentence  (i) shall not be
applicable  if such Eviction  occurs by reason of  Landlord's  bad faith acts or
(where  Landlord has an  affirmative  obligation to act pursuant to the terms of
this Lease)  omissions  and (ii) shall not be deemed to  constitute  a waiver by
Tenant of any right that Tenant may have under this Lease or at law or in equity
to make a claim for any damages  suffered by Tenant by reason of such  Eviction.
Any notice given by Tenant  pursuant to this Section 10.03 as to the  occurrence
of an Eviction which renders all or a portion of the Premises Untenantable shall
not be effective  unless such notice  expressly states that such notice is being
given  pursuant  to this  Section  10.03 and that  Tenant  may have the right to
terminate  this Lease in accordance  with the  provisions of this Section 10.03.

     (b) Subject to Section 7.07, "Terminated Space" means, at Tenant's election
as  specified  in the  applicable  termination  notice,  either  (i) the  entire
Premises or (ii) a portion of the Premises  consisting  of entire  floors of the
Building  (or so much  of any  floor  as  shall  then be part of the  Premises);
provided,  that in the  case of any such  partial  termination,  (x) all  floors
included within the Terminated  Space shall be contiguous and (y) the Terminated
Space shall include either (I) all or any of the floors the  Untenantability  of
which gave rise to such  termination  right or (II) either the highest or lowest
floor then  included in the Office Space and any other  floor(s)  contiguous  to
such  highest  or  lowest  floor  so  long  as the  total  rentable  area of the
Terminated  Space  does not  exceed  the  rentable  area of the  portion  of the
Premises the Untenantability of which gave rise to such termination right. If an
Eviction  occurs by reason of Force  Majeure,  then  Tenant's  sole  remedies in
respect of such Eviction  shall be as set forth in Sections  10.02 and 10.03 and
Tenant  hereby  waives  all  other  rights  or  remedies  at  law  or in  equity
(including,  without limitation, any right to claim a constructive eviction), if
and to the extent  that  Tenant may be  entitled  to such  rights or remedies by
reason of such Eviction.

     10.04 Tenant's Right to Interest on Late Payments.  Any amounts  payable by
Landlord  to Tenant  under this Lease  shall be due and  payable on the 30th day
after the date of invoice,  unless a  different  due date is  specified  in this
Lease.  If Landlord  fails to pay any amount  which is due and payable to Tenant
under this Lease on or before the due date therefor, Landlord shall pay interest
thereon at the Interest Rate (provided, that if Landlord fails timely to pay any
installment  of the Block A and B Allowance  or the Block C Allowance to Tenant,
the same shall bear  interest at the Prime Rate plus 5%) from the date when such
amount became due and payable to the date of Landlord's  payment of such amount;
provided,  that in no event  shall  there  be any  duplication  of any  interest
payable by Landlord  pursuant to this Section  10.04 and any other  provision of
this Lease.

     10.05 Tenant's Set-Off Right. (a) If Landlord fails to pay any amount which
is due and payable to Tenant under this Lease on or before the due date therefor
and such failure  continues for 30 days after Tenant  notifies  Landlord of such
failure  (which  notice  shall state that Tenant  intends to set-off such amount
against the next installment of Rent unless Landlord pays such amount to Tenant)
(an "Offset  Notice"),  then,  as Tenant's  sole remedy (but  subject to Section
10.05(b)),  Tenant may set-off such amount,  together with any interest  accrued
thereon in accordance with Section 10.04 or the other  applicable  provisions of
this Lease (collectively, the "Offset Amount"), against the next installments of
Rent  coming  due.  If any  portion  of any  Offset  Amount  shall not have been
credited  as of the end of the Term,  Landlord,  within 30 days after the end of
the Term,  shall pay such amount to Tenant (but subject to  Landlord's  right to
offset  against  such  unused  rent  credit any  amounts  which are then due and
payable  by Tenant to  Landlord).  The  preceding  sentence  shall  survive  the
expiration or earlier  termination of this Lease.  Notwithstanding the preceding
provisions  of this  Section  10.05(a),  if  Landlord,  within 30 days after the
giving of an Offset  Notice,  notifies  Tenant that Landlord  disputes  Tenant's
entitlement  to all or any  portion of the  Offset  Amount,  specifying  in such



notice the reasons for such dispute and the exact amount (if less than all) that
Landlord so disputes,  then Tenant shall not be entitled to so offset the Offset
Amount (or such portion  thereof as is in dispute)  pending  resolution  of such
dispute by  arbitration  in accordance  with Section 8.09 of this Lease. 

     (b) If  pursuant  to any  provision  of this Lease  Tenant is entitled to a
credit, for any amount owed by Landlord to Tenant under this Lease, against Rent
and such  credit,  together  with all other such credits to which Tenant is then
entitled,  exceeds  the Rent which is required to be paid by Tenant for the next
calendar  month,  then,  within 30 days  after  notice  by  Tenant to  Landlord,
Landlord shall pay to Tenant the total amount of such credits.

     10.06 Effect of Rejection by Landlord. Landlord and Tenant acknowledge that
this Lease is being executed and exchanged by the parties in  contemplation of a
bankruptcy proceeding involving Landlord and Landlord agrees that, in connection
with any bankruptcy  proceeding  involving  Landlord,  Landlord shall not reject
this Lease.  If,  notwithstanding  the  agreement  by Landlord in the  preceding
sentence, in connection with any bankruptcy proceeding involving Landlord,  this
Lease shall be rejected by Landlord or any legal representative of Landlord, and
if Tenant  shall  elect to retain its rights  under  this  Lease  under  Section
365(h)(1)(A)(ii)  or other then applicable  provision of the Federal  Bankruptcy
Code,  then  Tenant's  occupancy of the  Premises for the  remainder of the Term
shall be on all of the same  terms and  conditions  set  forth in this  Lease as
though such rejection had not occurred.





                                   ARTICLE 11
                                 Tenant Antenna

     11.01 Tenant Antenna. (a) Tenant may, subject to and in accordance with the
provisions of this Section 11.01, use those portions of the roof of the Building
designated on Exhibit T-1 attached  hereto to install,  maintain and operate one
8-foot whip antenna,  three microwave  dishes and one satellite dish and related
equipment, mountings and support structures (collectively, the "Antenna") and to
run lines  therefrom  into the  Premises,  as shall be  reasonably  required  in
connection  with the operation of the Antenna.  Landlord  shall permit Tenant to
construct a telecommunications  riser along a path that is reasonably acceptable
to  Landlord  and Tenant to connect the Antenna to the  Premises,  and  Landlord
shall  cooperate  with Tenant to provide  Tenant  with access to other  tenants'
premises to the extent  required to  construct  such riser.  Tenant's use of the
roof of the Building is a non  exclusive  use and Landlord may permit the use of
any  other  portion  of the  roof by any  other  person  for  any use  including
installation  of other  antennas and related  equipment and support  structures.
Landlord  shall  use  reasonable  efforts  (at no cost  to  Tenant,  subject  to
reimbursement  as part  of  Operating  Expenses  if and to the  extent  properly
includable  therein)  to ensure  that  such use does not  impair  Tenant's  data
transmission and reception via Tenant's Antenna. Tenant shall use its reasonable
efforts to ensure that its use of the roof does not impair  such other  person's
data  transmission  and  reception  via  its  respective  antennas  and  support
equipment.  If  Tenant's  construction,   installation,   maintenance,   repair,
operation  or use of the  Antenna  shall  interfere  with the rights of Landlord
(including, without limitation, Landlord's right reasonably to use the remainder
of the roof) or other  tenants in the  Building,  Tenant  shall  cooperate  with
Landlord or such other tenants in exercising  reasonable  efforts in eliminating
such interference;  provided, that the cost of remedying such interference shall
be borne by the party which is suffering  such  interference,  unless such party
was using the roof in the manner  suffering such  interference  prior in time to
the use of the Antenna in the manner  causing such  interference  by Tenant,  in
which case the cost of  remedying  such  interference  shall be borne by Tenant.
Tenant shall  secure and keep in full force and effect,  from and after the time
Tenant begins  construction and installation of the Antenna,  such supplementary
insurance  with  respect to the  Antenna as  Landlord  may  reasonably  require,
provided that the same shall not be in excess of that which would customarily be
required  from time to time by  landlords  of  buildings  of  similar  class and
character  in New York City with  respect to similar  installations. 

     (b) Tenant shall comply with all Laws  applicable to the Antenna.  Landlord
makes no warranties as to the permissibility of an Antenna under applicable Laws
or the suitability of the roof of the Building for the installation  thereof. If
Landlord's  structural  engineer  reasonably  deems it  necessary  that there be
structural  reinforcement  of the  roof  or  other  structural  requirements  in
connection with the installation of the antenna,  Landlord shall perform same at
Tenant's reasonable cost within 120 days after Tenant delivers to Landlord final
plans and  specifications  with respect to the  installation  of the Antenna and
Tenant shall not perform any such  installation  prior to the  completion of any
such  structural  reinforcement  or other  structural  requirements.  If  Tenant
disputes  the need for any such  structural  reinforcement  or other  structural
requirements  or whether  such need arises out of Tenant's  installation  of the
Antenna, then, pending the resolution of such dispute in accordance with Section
8.09,  (i) Landlord  shall not perform such  structural  reinforcement  or other
structural  requirements,  (ii)  Landlord's time period for completing such work
shall be  extended by the number of days that it takes to resolve  such  dispute
and (iii) Tenant shall not perform the  installation  of the Antenna  until such
dispute  is  resolved  and any  structural  reinforcement  or  other  structural
requirements  determined by such  arbitration  as necessary are  completed.  The
installation of the Antenna shall be an Alteration subject to Article 4. For the
purpose of  installing,  servicing or repairing  the Antenna,  Tenant shall have
access to the roof of the Building at reasonable times upon reasonable notice to
Landlord  and Landlord  shall have the right to require,  as a condition to such
access, that Tenant (or its employee, contractor or other representative) at all
times be  accompanied by a  representative  of Landlord whom Landlord shall make
available  upon  reasonable  notice  (except  that such  accompaniment  shall be
required in the case of an emergency only if practicable).  All work required to
be performed to the roof and other parts of the Building outside of the Premises
in  connection  with  the  installation  of  the  Antenna  (including,   without
limitation, any roof penetrations, structural modifications and reroofing) shall
be performed  by Landlord at Tenant's  reasonable  expense. 

     (c) Tenant shall be responsible  for all costs and expenses for maintenance
of the roof if and to the extent the same actually  results from Tenant's use of
the roof for the construction, installation, maintenance, repair, operation, and
use or removal of the  Antenna.  





     (d)  Notwithstanding  anything to the  contrary  contained  in this Section
11.01,  Landlord  may,  at  Landlord's  expense  (except as provided in the last
sentence of this  Section  11.01(d)),  on not less than 90 days'  prior  notice,
relocate the Antenna to another  location on the roof of the Building,  provided
that Landlord does not, except during such relocation  (which shall be scheduled
at a time reasonably  convenient to Tenant),  either interfere with or adversely
affect the receipt of and/or transmittal of microwaves or other similar signals,
and Tenant shall cooperate in all reasonable  respects with Landlord in any such
relocations.  If such  relocation  is done  pursuant  to any Law,  Tenant  shall
reimburse  Landlord  for the  cost  thereof  within  30 days  after  receipt  of
statements  therefor. 

     (e) The rights granted in this Section 11.01 are given in connection  with,
and as part of the  rights  created  under,  this  Lease and are not  separately
transferable  or  assignable.  Tenant shall use the Antenna solely in connection
with activities permitted under Section 1.05. Tenant shall not sell any services
arising  out of the use of the  Antenna  (i) to any other  tenant or (ii) to the
general public.





                                   ARTICLE 12
                          Corporate Retention Benefits

     12.01 Incentive Benefits.  Landlord hereby consents to Tenant entering into
an  arrangement  with  agencies  of the City and State of New  York,  including,
without limitation,  the New York City Economic Development  Corporation and the
Industrial Development Agency (such agencies are referred to herein collectively
as the "Agency")  pursuant to which Tenant  subleases the Premises to the Agency
and the Agency  sub-subleases  the  Premises  to Tenant.  Landlord  shall  fully
cooperate with Tenant in connection with such arrangement between Tenant and the
Agency;  provided,  that the same shall be accomplished  without  Landlord being
required to incur any out-of-pocket cost or expense thereby. If such cooperation
by  Landlord  shall  result in any  out-of-pocket  cost or expense to  Landlord,
Tenant shall  nonetheless  have the right to require  Landlord's  cooperation in
connection  therewith,  provided that Tenant shall  reimburse  Landlord for such
out-of-pocket costs or expenses within 30 days after demand.





IN WITNESS  WHEREOF,  Landlord and Tenant have executed this Lease as of the day
and year first written above.

Landlord:                          1290 ASSOCIATES
                                   By: O&Y Management Corp., As Agent

                                   By: /s/Tom Falus
                                       -------------------------------------- 
                                       Tom Falus
                                       Executive Vice President


Tenant:                           THE EQUITABLE LIFE ASSURANCE
                                  SOCIETY OF THE UNITED STATES

                                  By:  /s/William T. McCaffrey
                                       ------------------------------------- 
                                       William T. McCaffrey
                                       Executive Vice President and
                                       Chief Administrative Officer


Tenant's Federal Tax I.D. No.:    13-5570651

1290 Associates, in its capacity as the lessor ("Lessor") under the Ground Lease
(as defined in Section  6.01(c)(i) of the within  Lease) hereby  consents to the
within Lease and agrees, for itself and each of its successors and assigns which
is an Affiliate of the then  Landlord,  that in the event of the  termination of
the Ground Lease,  the Lease shall continue in full force and effect as a direct
lease  between  Lessor and Tenant,  and Lessor and Tenant shall be bound to each
other  under all of the terms,  covenants  and  conditions  of the Lease for the
balance  of the term  thereof  remaining,  with the same  force and effect as if
Lessor were the Landlord,  and Tenant does hereby (i) agree to attorn to Lessor,
as its Landlord, (ii) affirm its obligations under the Lease, and (iii) agree to
make  payment to Lessor of all sums  required  to be paid by Tenant to  Landlord
under the Lease,  and Lessor does hereby (a) agree to recognize  Tenant,  as its
Tenant,  (b) affirm all of its obligations as Landlord under the Lease,  and (c)
agree to make  payment to Tenant of all sums  required to be paid by Landlord to
Tenant under the Lease, said attornment (recognition), affirmation and agreement
by Tenant and Lessor to be effective and self-operative without the execution of
any further  instruments,  upon Lessor  succeeding  to the  interest of Landlord
under the Lease; provided,  that if Lessor or Tenant requests,  without implying
any obligation to do so on either party's part,  Lessor and Tenant shall confirm
the attornment and recognition  described  herein in writing.  Tenant waives the
provisions  of any  statute or rule of law now or  hereafter  in effect that may
give or purport  to give it any right or  election  to  terminate  or  otherwise
adversely affect the Lease or the obligations of Tenant  thereunder by reason of
any termination of the Ground Lease.

                                   1290 ASSOCIATES
                                   By: O&Y Management Corp., As Agent

                                   By: /s/Tom Falus
                                       -------------------------------------- 
                                       Tom Falus
                                       Executive Vice President


                                  THE EQUITABLE LIFE ASSURANCE
                                  SOCIETY OF THE UNITED STATES

                                  By:  /s/William T. McCaffrey
                                       ------------------------------------- 
                                       William T. McCaffrey
                                       Executive Vice President and
                                       Chief Administrative Officer





                                    EXHIBIT A

                               DESCRIPTION OF LAND

     All that certain plot, piece or parcel of land, situate, lying and being in
the  Borough  of  Manhattan,  City,  County and State of New York,  bounded  and
described as follows:

     BEGINNING at the corner formed by the intersection of the northerly side of
West 51st  Street with the  easterly  side of Avenue of the  Americas  (formerly
Sixth  Avenue);  running  thence  Easterly along the northerly side of West 51st
Street 448 feet to a point  distant 472 feet  Westerly from the corner formed by
the  intersection  of the  northerly  side of West 51st Street with the westerly
side of Fifth Avenue,  thence  Northerly  parallel with Fifth Avenue and part of
the  distance  through a party wall 100 feet 5 inches to the center  line of the
block between West 51st Street and West 52nd Street,  thence Westerly along said
center line of the block 2 feet, thence Northerly parallel with Fifth Avenue and
part of the  distance  through a party  wall 100 feet 5 inches to the  southerly
side of West 52nd Street,  at a point therein distant 474 feet Westerly from the
southwest  corner of West 52nd Street and Fifth Avenue;  running thence Westerly
along the  southerly  side of West 52nd Street 446 feet to the easterly  side of
Avenue of the Americas,  thence  Southerly  along the easterly side of Avenue of
the Americas 200 feet 10 inches to the northerly side of West 51st Street at the
point or place of BEGINNING.

                                      A-1


                           EXHIBIT B (B1 through B15)

                                   FLOOR PLANS

                                 See Exhibit AA



                                      B-1



                                    EXHIBIT C

                              RULES AND REGULATIONS

     1. The rights of each tenant in the  entrances,  corridors,  elevators  and
escalators  servicing  the  Building are limited to ingress and egress from such
tenant's premises for the tenant and its employees,  licensees and invitees, and
no tenant shall use, or permit the use of, the entrances,  corridors, escalators
or  elevators  for any other  purpose.  No tenant  shall  invite to the tenant's
premises,  or  permit  the visit  of,  persons  in such  numbers  or under  such
conditions  as to  interfere  with the use and  enjoyment  of any of the plazas,
entrances, corridors, escalators, elevators and other facilities of the Building
by any other  tenants.  Fire exits and stairways are for emergency use only, and
they shall not be used for any other  purpose by the tenants,  their  employees,
licensees or  invitees.  No tenant  shall  encumber or  obstruct,  or permit the
encumbrance  or  obstruction  of,  any  of  the  sidewalks,  plazas,  entrances,
corridors,  escalators,  elevators,  fire exits or  stairways  of the  Building.
Landlord  reserves  the right to control and operate the public  portions of the
Building and the public  facilities,  as well as  facilities  furnished  for the
common use of the tenants, in such manner as it in its reasonable judgment deems
best for the benefit of the tenants generally.

     2. Landlord may refuse  admission to the Building outside of Business Hours
on Business Days to any person not known to the watchman in charge or not having
a pass issued by Landlord or the tenant whose  premises are to be entered or not
otherwise properly identified,  and Landlord may require all persons admitted to
or leaving the Building  outside of Business  Hours on Business  Days to provide
appropriate identification. Tenant shall be responsible for all persons for whom
it  issues  any  such  pass and  shall be  liable  to  Landlord  for all acts or
omissions of such persons. Any person whose presence in the Building at any time
shall, in the judgment of Landlord, be prejudicial to the safety of the Building
or of its tenants may be ejected  therefrom.  During any invasion,  riot, public
excitement or other  commotion,  Landlord may prevent all access to the Building
by closing the doors or otherwise  for the safety of the tenants and  protection
of property in the Building.

     3. No awnings or other  projections  shall be attached to the outside walls
of the Building. No curtains, blinds, shades or screens which are different from
the standards  adopted by Landlord for the Building shall be attached to or hung
in, or used in connection  with, any exterior  window or door of the premises of
any tenant,  without  the prior  written  consent of  Landlord.  Such  curtains,
blinds,  shades or screens  must be of a quality,  type,  design and color,  and
attached  in the  manner  approved  by  Landlord,  which  approval  shall not be
unreasonably withheld.

     4. No lettering,  sign, advertisement or notice shall be displayed in or on
the exterior windows or doors, or on the outside of any tenant's premises, or at
any point inside any tenant's premises (except in the elevator lobbies on floors
fully  leased by Tenant)  where the same is  designed  or intended to be visible
outside of such premises,  without the prior written consent of Landlord. In the
event of the  violation of the  foregoing by any tenant and if such tenant shall
not cure such violation within 10 days after notice from Landlord,  Landlord may
remove the same without any  liability,  and may charge the  reasonable  expense
incurred in such removal to the tenant violating this rule.

                                      C-1


     5. The sashes,  sash doors,  skylights,  windows and doors that  reflect or
admit light and air into the halls,  passageways  or other public  places in the
Building shall not be covered or obstructed by any tenant.

     6. No  showcases or other  articles  shall be put in front of or affixed to
any part of the exterior of the Building,  nor placed in the halls, corridors or
vestibules.

     7. No bicycles,  vehicles,  animals  (other than seeing eye dogs to aid the
handicapped),  fish or  birds of any kind  shall be  brought  into or kept in or
about the premises of any tenant or the Building.

     8. No noise, including, without limitation, music or the playing of musical
instruments,  recordings,  radios or television,  which actually  disturbs other
tenants in the Building, shall be made or permitted by any tenant. Nothing shall
be done or permitted in the  premises of any tenant  which  actually  impairs or
interferes  with the use or  enjoyment  by any other  tenant of any space in the
Building.

     9. No tenant, nor any tenant's contractors,  employees, agents, visitors or
licensees,  shall at any  time  bring  into or keep  upon  the  premises  or the
Building any  inflammable,  combustible,  explosive,  or otherwise  hazardous or
dangerous fluid, chemical,  substance or material;  provided,  that Tenant shall
have the right to use and store such  materials  in the  Premises so long as the
same are reasonably  required for the performance of Tenant's  Alterations or in
the ordinary  conduct of Tenant's use and  occupancy  of the  Premises,  and, in
either of such cases,  such materials are used and stored in compliance with all
Laws.

     10.  Additional  locks or bolts of any kind which  shall not be operable by
the Grand Master Key for the Building  shall not be placed upon any of the doors
or  windows  by any  tenant,  nor  shall  any  changes  be made in  locks or the
mechanism  thereof  which shall make such locks  inoperable by said Grand Master
Key.  Notwithstanding  the  foregoing,  Tenant shall have the right to install a
separate security/access system for the Premises; provided, that Tenant delivers
to Landlord  keys or other access  devices  which allow  Landlord to always have
access to the Premises.

     11.  All  removals,  or the  carrying  in or out  of  any  safes,  freight,
furniture,  packages,  boxes,  crates  or any  other  object  or  matter  of any
description must take place during such hours and in such elevators, and in such
manner as Landlord or its agent may reasonably  determine from time to time. The
persons  employed  to move safes and other  heavy  objects  shall be  reasonably
acceptable to Landlord and, if so required by law, shall hold a Master  Rigger's
license.  Arrangements will be made by Landlord with any tenant for moving large
quantities  of  furniture  and  equipment  into  or  out of  the  Building.  All
out-of-pocket  labor and  engineering  costs  incurred by Landlord in connection
with any moving  specified in this rule shall be paid by tenant to Landlord,  on
demand, subject to Sections 3.04(c)(ii) and 4.01(a)(iv) of the Lease.

                                      C-2


     12.  Landlord  reserves the right to inspect all objects and matter  (other
than confidential documents) to be brought into the Building and to exclude from
the  Building  all  objects  and matter  which  violate  any of these  Rules and
Regulations  or the lease of which this Exhibit is a part.  Landlord may require
any person  leaving the  Building  with any package or other object or matter to
submit a pass,  listing such  package or object or matter,  from the tenant from
whose  premises  the  package  or object or  matter  is being  removed,  but the
establishment   and  enlargement  of  such  requirement  shall  not  impose  any
responsibility  on Landlord for the protection of any tenant against the removal
of  property  from the  premises  of such  tenant.  Except as may  otherwise  be
expressly  provided  in the lease to which this  Exhibit is  attached.  Landlord
shall in no way be liable to any tenant for  damages  or loss  arising  from the
admission,  exclusion  or ejection of any person to or from the  premises or the
Building under the provisions of this Rule or of Rule 2 hereof.

     13. No tenant  shall  occupy or permit any  portion of its  premises  to be
occupied as an office for a public  stenographer  or public  typist,  or for the
possession, storage, manufacture, or sale of liquor, narcotics, dope, tobacco in
any form, or as a barber,  beauty or manicure  shop,  or as a school.  No tenant
shall  use,  or  permit  its  premises  or any  part  thereof  to be  used,  for
manufacturing,  or the  sale at  retail  or  auction  of  merchandise,  goods or
property  of any kind,  except for the sale of food and  beverages  to  Tenant's
employees and invitees from vending machines in its premises.

     14. No machinery or mechanical equipment other than such as are customarily
found in general,  executive or administrative offices (or are customary for the
ancillary  uses  permitted in Section 1.05 of the lease to which this Exhibit is
attached)  may be  installed  or  operated  in  any  tenant's  premises  without
Landlord's  prior  written  consent  which  consent  shall  not be  unreasonably
withheld  or  delayed,  and in no case  (even  where  the  same are of a type so
excepted or as so  consented to by  Landlord)  shall any machines or  mechanical
equipment be so placed or operated as to actually  disturb  other  tenants;  but
machines and  mechanical  equipment  which may be permitted to be installed  and
used in a tenant's  premises  shall be so equipped,  installed and maintained by
such  tenant  as  to  prevent  any  noise,  vibration  or  electrical  or  other
interference  from being transmitted from such premises to any other area of the
Building,  which noise,  vibration or electrical or other interference  actually
interferes with or disturbs any other tenant or unreasonably  interferes with or
disturbs Landlord.

                                      C-3


     15. Landlord,  its contractors,  and their respective  employees shall have
the right to use,  without charge  therefor,  all light,  power and water in the
premises of any tenant while  cleaning or making  repairs or  alterations in the
premises of such tenant. If Landlord, its contractors or their employees turn on
any lights,  power or water in the  premises  for  purposes of  performing  such
cleaning,  repairs or alterations,  they shall turn the same off upon completing
such work.

     16. No premises of any tenant  shall be used for lodging or sleeping or for
any illegal purpose.

     17. The  requirements of tenants will be attended to only upon  application
at the office of the Building.  Employees of Landlord shall not perform any work
or  do  anything   outside  of  their  regular  duties,   unless  under  special
instructions from Landlord.

     18. Canvassing,  soliciting and peddling in the Building are prohibited and
each tenant shall cooperate to prevent the same.

     19.  Tenant shall not cause or permit any unusual or  objectionable  fumes,
vapors or odors to emanate from the Premises  which would annoy other tenants or
create a public or private  nuisance.  No cooking  shall be done in the Premises
except as is expressly permitted in the Lease.

                                      C-4


     20. No acids, vapors or other materials shall be discharged or permitted to
be  discharged  into the waste lines,  vents or flues of the Building  which may
damage  them.  The water and wash  closets  and other  plumbing  fixtures  in or
serving any tenant's  premises  shall not be used for any purpose other than the
purposes of which they were designed or constructed, and no sweepings,  rubbish,
rags, acids or other foreign substances shall be deposited  therein.  Subject to
the waiver of  subrogation  described in Section 7.03 of the Lease,  all damages
resulting  from any misuse of the fixtures  shall be borne by the tenant who, or
whose servants,  employees, agents, visitors or licensees shall have, caused the
same. Any cuspidors or containers or receptacles used as such in the premises of
any tenant,  or for garbage or similar refuse,  shall be emptied,  cared for and
cleaned by and at the expense of such tenant.

     21. All entrance  doors in each tenant's  premises shall be left locked and
all windows  shall be left closed by the tenant when the  tenant's  premises are
not in use.  Entrance doors on any floor not fully leased to Tenant shall not be
left open at any time.  If Tenant  installs a security  system for the Premises,
Tenant shall provide Landlord with a reasonable  number of keys/cards for access
thereto.

     22. Hand trucks not equipped with rubber tires and side guards shall not be
used within the Building.

     23. All windows in each tenant's premises shall be kept closed. If Landlord
shall elect to install any energy  saving film on the windows of the Premises or
to install energy saving windows in place of the present  windows,  tenant shall
cooperate with the reasonable  requirements  of Landlord in connection with such
installation  and thereafter the  maintenance and replacement of the film and/or
windows  and  permit  Landlord  to  have  access  to the  tenant's  premises  at
reasonable times during Business Hours to perform such work.

     24. If the Premises shall at any time be infested with vermin or rodents as
a result of the use or any  misuse or  neglect of the  Premises  by Tenant,  its
agents,  employees,  licensees  or  invitees,  Tenant shall cause the same to be
exterminated  from time to time to the reasonable  satisfaction  of Landlord and
Tenant  shall  employ for such purpose an  exterminator  reasonably  approved by
Landlord.

     25.  To the  extent  there  is a  conflict  or  inconsistency  between  the
provisions  contained  in the  Lease or this  Exhibit  C  annexed  thereto,  the
provisions of the Lease shall govern and control.

                                      C-5


                                    EXHIBIT D

                        ALTERATIONS RULES AND REGULATIONS

A.       General

     1) Tenant will make no  Alterations  (as  defined in the Lease),  in, to or
about the Premises except in compliance with Section 4.02 of the Lease.

     2) Prior to the commencement of any Alterations,  Landlord and Tenant shall
perform a  walk-through  of the Premises to determine the existing  condition of
Premises.

     3) Prior to the  commencement of any  Alterations,  Tenant shall submit for
Landlord's  written approval all required items described in Paragraphs 1, 2 and
3 of Section B hereof.

     4) Tenant  shall  ensure  that the  proposed  Alterations  comply  with The
Administrative  Code of The  City of New York and all  other  laws,  ordinances,
rules and regulations promulgated by all governmental agencies and bodies having
jurisdiction over such Alterations, including, without limitation, the Americans
With Disabilities Act.

     5) Tenant shall ensure that all proposed  Alterations  comply with Building
standards  listed in  Section C hereof,  and are  adequately  designed  to serve
Tenant's needs while remaining in conformity with, and not adversely  affecting,
any Building systems.

     6) All (i) demolition or removal of construction  materials, or (ii) moving
of construction  materials to or from the Building, or (iii) other categories of
work which  actually  disturb or interfere with other Tenants of the Building or
unreasonably  disturb or interfere with Building  operations,  must be scheduled
and performed before or after Business Hours;  provided,  that clause (ii) above
shall not be applicable to Tenant's  initial  Alterations to the Blocks.  Tenant
shall provide the Building  Manager with written  notice at least 24 hours prior
to scheduling any Alteration,  and except as may otherwise be expressly provided
in the Lease,  shall pay  Landlord's  standard  charges  for  overtime  porters,
security, engineers and other costs incurred by Landlord in connection with such
after hours scheduling.

     7) All  inquiries,  Tenant  plans,  requests for  approvals,  and all other
matters concerning Alterations shall be initially processed through the Building
Manager.


                                      D-1


     8) Except if and to the extent  expressly  provided to the contrary in this
Exhibit D, Tenant shall not be required to pay any fees or other charges for any
of the  obligations  of  Landlord  set  forth  in this  Exhibit  D  (subject  to
reimbursement of Landlord's costs and expenses as part of Operating  Expenses to
the extent properly includable therein).

B.       Tenant Submittals

     1) Tenant to submit, to Landlord,  the following information for Landlord's
review  and  approval  prior  to  commencement  of  any  Alterations  for  which
Landlord's approval is required under the Lease.  Landlord's review and approval
period  will not  commence  until the  Building  Manager  is in  receipt  of the
following items, as one complete package:

     a)  Letter of Intent to  perform  construction.  Letter to  include a brief
description  of the  proposed  Alterations,  Tenant  contact,  list of  proposed
contractors  and  estimated  work  schedule.  Such letter of intent shall not be
required with respect to Tenant's initial Alterations to the Blocks.

     b) 2 sets of design drawings and  specifications  noting full scope of work
involved in performing such Alterations.  All drawings must be signed and sealed
by Tenant's  Registered  Architect or Professional  Engineer licensed to conduct
business in the State of New York. Part plan drawings will not be acceptable.

     (i) If full height  partition  walls are being installed in an area that is
sprinklered, the existing sprinkler head locations must be included to show that
new partitions are not in conflict with sprinkler coverage.

     (ii) If the area being altered includes  existing  compartmentation  walls,
those compartmentation walls must be indicated on Tenant's layout.

     c) A letter from Tenant's  Registered  Architect or  Professional  Engineer
stating that their design and scope of work complies with all applicable  codes,
and local laws, especially noting Local Laws 16/84, 58/87, and 5/73. This letter
must be signed and include their professional seal.

     d)  Proper  New York  City  Building  Department  filing  applications,  as
required, for all Alterations indicated on drawings.

     2) Upon completion of Landlord's  review, the following will be returned to
Tenant:

                                      D-2


     a) A letter  (i)  granting  approval  to file  drawings;  or (ii)  granting
conditional  approval,  subject to Tenant incorporating  Landlord's comments and
suggested  revisions into a revised set of design drawings (no Alterations  will
commence or  applications  be filed until Landlord is in receipt of such revised
set of drawings);  or (iii)  disapproving  such Alterations (it being understood
that the time period for  Landlord's  approval shall be governed by Section 4.02
of the Lease); and

     b) If approved, or conditionally approved, Building Department applications
signed by Landlord  (it being  understood  that the time  period for  Landlord's
signing such applications shall be governed by Section 4.02(h) of the Lease).

Landlord's  review is for conformance with Building  standards only and is not a
review for compliance  with law or a review of the adequacy of Tenant's  design.
No such approval,  or comments shall  constitute a waiver of the obligation that
Tenant's  Alterations  comply with all laws and receive Buildings  Department or
other governmental approvals.

     3) Prior to commencement of Alterations:

     Tenant to submit to Landlord the following:

     a) A letter or revised drawings addressing Landlord's comments, if any.

     b)  Approved  New  York  City  Building  Department  filing   applications,
drawings, and all work permits for work then being performed by Tenant.

     c) A final list of all contractors and  subcontractors who will perform the
Alterations.

     d) A work schedule noting duration of work.

     e) Valid  Certificates of Insurance and a Contractors  Agreement  signed by
each  contractor  with  whom  Tenant  contracts  directly,   including,  without
limitation,  any construction  manager (see Insurance  Requirements in Section D
hereof).

     4) Upon completion of Alterations:

     Tenant to submit to Landlord, in a timely manner, the following:

     a) All  sign-off  documents  which  pertain to work filed from all agencies
having jurisdiction.

     b) As-built  drawings or final  working  drawings  (to the extent  required
under the Lease).

     c) A properly  executed  Air  Balancing  Report,  signed by a  Professional
Engineer  (other than in connection  with Tenant's  initial  Alterations  to the
Premises).

                                      D-3


C.       Building Standard Requirements

     1)  All  structural  or  floor  loading  requirements,  mechanical  (HVAC),
plumbing,  sprinkler,  electrical,  fire alarm, elevator, of any proposed Tenant
installation  shall be subject to the prior approval of Landlord's  consultants.
All actual out-of-pocket  expenses reasonably incurred by Landlord's  consultant
regarding  review and approval of Tenant's design shall be at Tenant's  expense;
provided,  that such expenses shall not be payable by Tenant in connection  with
Tenant's initial Alterations to the Blocks.

     2)  Landlord  or its  representative  shall have the right to  monitor  all
demolition.

     3) Except as  otherwise  may be expressly  provided in the Lease,  elevator
service for  construction  work shall be charged to Tenant at standard  Building
rates.  Prior  arrangements for elevator use shall be made with Building Manager
by  Tenant.  No  material  or  equipment  shall  be  carried  under or on top of
elevators.  Except as  otherwise  may be  expressly  provided  in the Lease,  if
workmen  (including,  without  limitation,  Operating  Engineers  and  Personnel
Carriers),  are  required by any union  regulations  for  material or  personnel
hoisting, such workmen shall be paid for by Tenant.

     4) If shutdown  of any  mechanical  or  electrical  risers  (other than any
express risers  serving only the Premises) are required,  such shutdown shall be
performed  by  Landlord's  contractors  at  Tenant's  reasonable  expense or, at
Landlord's   option,   supervised  by  Landlord's   representative  at  Tenant's
reasonable  expense;  provided,  that  there  shall be no  charge  to  Tenant by
Landlord  for such  shutdown  unless  Tenant  requests  that  such  shutdown  be
performed on an overtime basis.

     5) Tenant's contractor shall:

     a) have a Superintendent or Foreman on the Premises at all times;

     b) police the job at all times,  continually  keeping the Premises orderly;
protection and maintenance will be Tenant's responsibility;

     c) maintain  cleanliness and protection of all areas,  including  elevators
and lobbies;

     d) protect the front and top of all  peripheral  HVAC units and  thoroughly
clean them at the completion of work;

     e) block off  supply and return  grills,  diffusers  and ducts to keep dust
from entering into the Building air conditioning system;

     f) protect all Class "E" fire alarm devices and wiring; and

     g) avoid the actual disturbance of other Tenants.

                                      D-4


     6) If any part of Tenant's Alteration is improperly performed, Tenant shall
be  charged  for the  reasonable  and  actual  cost of  corrective  work done by
Landlord's  personnel  or  contractors  engaged  for such  purpose by  Landlord.
Landlord  may not  perform  any  such  corrective  work  unless,  in  Landlord's
reasonable   judgment,   Tenant's  Alteration  adversely  affects  any  Landlord
Obligation  Area or any other area outside of the Premises,  and Tenant is given
such notice and cure period as is reasonable under the circumstances.

     7) All  equipment  and  installations  must be equal to or better  than the
standards of the Building.

     8) Tenant shall pay Landlord for any amounts billed in connection  with any
Alteration  within  30 days  after  receipt  by Tenant  of an  invoice  therefor
reasonably  describing the charges and accompanied by reasonable back-up for the
amount invoiced.

     9)  Landlord's  contract  fire alarm  service  personnel  shall be the only
personnel  permitted  to  perform  the final  tie-in  to the  Class "E"  System;
provided, that the rates of such personnel are reasonably competitive with rates
charged by other  contractors  providing  such  services in  first-class  office
buildings in midtown Manhattan.

     10) During  such times  that  Tenant's  alterations  or  demolition  of the
Premises  require  that fire  protection  afforded  by the  Class "E"  System or
sprinkler system be disabled,  Tenant, at Tenant's expense,  shall maintain fire
watch  service  deemed  reasonably  suitable to Landlord,  and any  governmental
authority having jurisdiction.

     11) Landlord, at Tenant's expense,  shall repair or cause to have repaired,
any and all defects, deficiencies or malfunctions of the Class "E" System caused
by  Tenant's  Alterations  or  related  demolition  performed  by  Tenant or its
contractors.  Such  expense may  include  reasonable  expenses  of  engineering,
supervision  and standby fire watch  personnel  that Landlord  deems  reasonably
necessary to protect the Building during the time such defects, deficiencies and
malfunctions are being corrected.

     12) Should  Tenant  desire to install its own internal  fire alarm  system,
Tenant shall request  Landlord to connect such system to the Class "E" System at
Tenant's  expense in such  reasonable  manner as prescribed by Landlord.  Tenant
shall,  at Tenant's  reasonable  expense,  have such  internal fire alarm system
approved by  governmental  agencies  having  jurisdiction,  and shall  submit to
Landlord  an  approved  copy of  plans  of such  system  before  initiating  any
installation of such system.  Tenant must  demonstrate that system is in working
order prior to requesting tie-in.

     13) Tenant, at Tenant's  expense,  shall be responsible for the maintenance
and proper operation of any Tenant Class "E" Fire Alarm sub-system.

                                      D-5


     14) When Tenant's use of any space requires a change in the  Certificate of
Occupancy,  whether a building has a Final Certificate of Occupancy or Temporary
Certificate of Occupancy,  or (as in the case of a new Building with a Temporary
Certificate of Occupancy)  involves the initial inclusion of the Premises on the
Certificate  of  Occupancy,  Tenant  shall  have  the  right to  engage  its own
consultant to perform such work.  Tenant shall be  responsible  for all costs in
connection with such consultant's services, other than any costs relating to the
removal of violations or other encumbrances affecting the Building which must be
removed by Landlord in accordance with the Lease.

     15) Tenant shall be  responsible  for keeping,  on Premises,  a copy of all
required Building  Department  approved  applications,  drawings,  permits,  and
sign-offs  during and after completion of construction and shall deliver same to
Landlord upon  Landlord's  request  (provided such request is made within 1 year
after completion of construction of the Alteration in question).

     16) Tenant shall be responsible  for the payment of all fines and penalties
assessed by any governmental  agency and for the removal of any violations noted
by any  governmental  agency,  in either case by reason of  Tenant's  failure to
obtain any governmental sign-off required for any Alteration.

     17)  The  attachment  of  any  work  to  Building  window  mullions,   HVAC
enclosures,   window  soffets,  will  not  be  permitted.   Notwithstanding  the
foregoing,   Landlord  shall  not  unreasonably  withhold  its  consent  to  any
Alteration  which provides for dry wall partitions  abutting the Building window
mullions  or  the   modification  of  window  soffets  in  connection  with  the
installation of louvers.

     18) Electrical  wire mold will not be permitted  without  written  approval
from Landlord,  which approval shall not be unreasonably withheld. Whips to feed
furniture panels are permitted; provided, that the same comply with all Laws.

     19)  Chasing  of  structural  slab or  Building  masonry  walls will not be
permitted  unless  consent  is given by  Landlord.  Such  consent  shall  not be
unreasonably  withheld if such work will not affect space leased to, or services
provided to, another tenant or occupant of the Building.  Such consent shall not
be  arbitrarily  withheld  if such work  affects  space  leased to, or  services
provided to, another tenant or occupant of the Building.

     20)  The  attachment  of  drywall  metal  studs  or  track  to  mechanical,
electrical, plumbing, sprinkler, or any Building systems will not be permitted.

     21) All valves or equipment  controlling Building systems or Tenant systems
must be tagged and identified.

     22) Access  doors must be provided  to all  Building  equipment  and Tenant
equipment.

     23) Tenant's design  consultant is responsible to ensure that base Building
systems are  adequately  sized to meet  Tenant's  requirements.  Tenant shall be
responsible  for  alterations  to any existing HVAC ductwork or system and shall
ensure that such work is integrated  so as not to adversely  affect the Building
system.

                                      D-6


     24) All hardware is to match Building standards.

     25) Tenant shall have the right to install  outside  louvers on the windows
of the  Premises;  provided,  that no louvers  shall be installed on any windows
facing  6th Avenue or on the first 2 windows in from 6th Avenue on the north and
south sides of the Building.  Tenant shall not install any other outside louvers
without  Landlord's prior written  approval.  Detailed  sketches of all proposed
louvers shall be submitted for Landlord's  approval.  Such approval shall not be
unreasonably  withheld if the installation of such louvers will not affect space
leased to, or services  provided to, another tenant or occupant of the Building.
Such approval  shall not be  arbitrarily  withheld if the  installation  of such
louvers  affects  space leased to, or services  provided to,  another  tenant or
occupant of the Building.

     26) Any  connections  to Building  systems must be of the same materials as
existing Building standards.

     27) All elevator devices must remain accessible for maintenance.

     28) Tenant is not to mount any  equipment in Building  Electrical  Closets,
Telephone Closets, or Mechanical  Equipment Rooms without prior written approval
from Landlord,  which approval shall not be unreasonably  withheld  provided the
floor on which such closets or rooms are located is fully leased by Tenant.

     29)  Tenant  is  responsible  to  ensure  that  all  work is  performed  in
accordance with good construction practices.

D.       Contractors Agreement; Insurance Requirements

     [To  be  retyped  on  Letterhead  of  Tenant's  contractors,  addressed  to
Landlord;  References below to "general  contractor"  shall be deemed to include
any construction manager]

Tenant:

Premises:

     The undersigned contractor (hereinafter called "Contractor") has been hired
by the Tenant or occupant  (hereinafter  called  "Tenant") of the Building named
above or by Tenant's  contractor  to perform  certain work  (hereinafter  called
"Work") for Tenant in the  Tenant's  Premises in the  Building.  Contractor  and
Tenant have requested the undersigned  Landlord  (hereinafter called "Landlord")
to grant Contractor access to the Building and its facilities in connection with
the  performance  of the Work  and  Landlord  agrees  to grant  such  access  to
Contractor upon and subject to the following terms and conditions:

     1)  Contractor  agrees to indemnify  and save  harmless the  Landlord,  any
Superior  Lessor  and any  Superior  Mortgagee  and their  respective  officers,
employees,  agents,  affiliates,  subsidiaries,  and partners, and each of them,
from and with respect to any claims,  demands,  suits,  liabilities,  losses and
expenses,  including reasonable attorneys' fees, arising out of or in connection
with the Work  (and/or  imposed  by law  upon  any or all of  them)  because  of
personal injuries,  including death at any time resulting therefrom, and loss of
or damage to property, including consequential damages, whether such injuries to
persons or property are claimed to be due to  negligence  of the  Contractor  or
Tenant,  except  to the  extent  specifically  prohibited  by law  (and any such
prohibition  shall not void this  Agreement  but  shall be  applied  only to the
minimum extent required by law).

     2)  Contractor  shall  provide  and  maintain  at its  own  expense,  until
completion of Work, the following insurance:

     a) Workers'  Compensation and Employers'  Liability Insurance covering each
and every  workman  employed in, about or upon the Work, as provided for in each
and every statute applicable to Workers'  Compensation and Employers'  Liability
Insurance.

                                      D-7


     b) Commercial General Liability  Insurance Including Coverage for Completed
Operations,  Broad Form  Property  Damage "XCU"  exclusion  if any deleted,  and
Contractual  Liability (to specifically include coverage for the indemnification
clause of this Agreement) for not less than the following limits:

 Combined Single Limit
 Bodily Injury and
 Property Damage Liability:        $5,000,000 (for Tenant's general
                                   contractor and all Major Trade
                                   contractors) and $1,000,000
                                   (for all non-Major Trade
                                   contractors), in each case written
                                   on a per occurrence basis.
                                   "Major Trades" means HVAC,
                                    ------------
                                   electric, sprinkler and plumbing.

     c) Commercial Automobile Liability Insurance (covering all owned, non-owned
and/or hired motor vehicles to be used in connection with the Work) for not less
than the following limits:

      Bodily Injury:          $5,000,000 (for Tenant's
                              general contractor and all Major
                              Trade contractors) and
                              $1,000,000 (for all non-Major
                              Trade contractors), in each case
                              per person

                              
                              $5,000,000 (for Tenant's general contractor
                              and all Major Trade contractors)
                              and $1,000,000(for all non-Major Trade
                              contractors), in each case per occurrence

     Property Damage:         5,000,000  (for Tenant's
                              general contractor and all Major
                              Trade contractors) and
                              $1,000,000 (for all non-Major
                              Trade contractors), in each case
                              per occurrence

     Contractor  shall  furnish a  certificate  from its  insurance  carrier  or
carriers to the Building office before commencing the Work,  showing that it has
complied with the above requirements  regarding insurance and providing that the
insurer will give Landlord 10 days prior written notice of the  cancellation  of
any of the  foregoing  policies.  Such  insurance  may be carried  under blanket
and/or  umbrella  policies  covering the Building and/or the Work and other work
sites of  Contractor;  provided,  that each such  policy  shall in all  respects
comply with this Exhibit D, shall specify that the portion of the total coverage
of such  policy  that is  allocated  to the  Building  and/or the Work is in the
amounts required pursuant to this Exhibit D and shall provide that the amount of
coverage afforded  thereunder with respect to the Building and/or the Work shall
not be reduced by claims thereunder against such other work sites of Contractor.

     3) Contractor shall require all of its  subcontractors  engaged in the Work
to provide the following insurance:

     a)  Commercial  General  Liability  Insurance   Including   Protective  and
Contractual  Liability  Coverage  with limits of liability at least equal to the
above stated limits.

                                      D-8


     b)  Commercial   Automobile   Liability  Insurance  (covering  all  owners,
non-owned  and/or hired motor  vehicles to be used in connection  with the Work)
for not less than the following limits:

   Bodily Injury:      $5,000,000 (for Tenant's
                       general contractor and all Major
                       Trade contractors) and
                       $1,000,000 (for all non-Major Trade contractors),
                       in each case per person
                      
                       $5,000,000 (for Tenant's general contractor and
                       all Major Trade contractors) and $1,000,000(for
                       all non-Major Trade contractors), in each case
                       per occurrence

Property Damage:       $5,000,000 (for Tenant's
                       general contractor and all Major
                       Trade contractors) and
                       $1,000,000 (for all non-Major
                       Trade contractors), in each case
                       per occurrence

     Agreed to and executed this day of , 19 .  ----------  --------------------
- -----

Landlord:                                                     Contractor:

                                      D-9


                                   EXHIBIT E

                        STANDARD CLEANING SPECIFICATIONS

     All  cleaning  services  except  those  performed  by day  porters,  window
cleaners and matrons are to be performed  nightly,  5 nights per week (except as
herein otherwise provided). No Saturday, Sunday or Holiday service.

     Holiday are to be those days designated by the applicable  Building service
union agreements, however, on "Holidays" other than New Year's Day, Washington's
Birthday,  Memorial  Day,  Independence  Day,  Labor Day,  Thanksgiving  Day and
Christmas  Day, a cleaning  crew will be provided by  Contractor  to empty waste
paper baskets,  ash trays and remove  rubbish in tenanted  areas  throughout the
Building  and prepare  public areas for the next  business day that  building is
open.  (Such reduced service is "blitz  cleaning,"  which will be provided at no
cost to Tenant.)

     Sufficient  day  porters and  matrons  will be assigned to the  Building to
perform daily tasks as specified below. However, one of such day porters will be
assigned  to the  Building  on a Tuesday to Saturday  work  schedule.  Competent
supervisors  will be assigned to the  Building  both day and night.  Supervisors
shall not leave until work is completed  and they must check that all lights are
turned out,  windows  closed,  doors locked and offices left in a neat,  orderly
condition  after  nightly  cleaning.  Head day  porter is not to act as  daytime
on-site supervision.

     Contractor  will  provide  Building  manager  with a schedule  of  cleaning
services  (e.g.,  high dusting) not performed  daily or weekly  ("projects")  to
allow verification that work is completed in accordance with the Specifications.

                                  TENANT SPACE
                                  ------------

     In tenant areas,  Contractor's employees will work behind locked doors, and
will only open a door for members of their  cleaning crew who have been assigned
to remove  rubbish or other like  material  from  tenant's  premises  during the
nighttime cleaning operation.

     The nighttime  supervisor  will verify that the work has been  completed in
all tenant  areas,  that all  venetian  blinds  have been  lowered  and set in a
uniform appearance,  that all lights have been turned off, windows closed, doors
locked and  offices  left in a neat and  orderly  appearance  for the next day's
business.

     TENANT OFFICES AND WORK SPACE (INCLUDING TENANT ELEVATOR LOBBIES)

     Hand dust and wipe  clean with damp or treated  cloth all  furniture,  file
cabinets,  fixtures,  horizontal  surfaces of window  frames,  window  sills and
convector enclosure tops nightly; wash said sills and tops when necessary.  Dust
all chair rails, trim and baseboards as necessary, but at least weekly.

     Empty all waste receptacles  nightly,  provide liners at no cost to Tenant,
and deliver the waste  paper and waste  materials  to  locations  designated  by
Customer.  Contractor  is to separate,  bale and/or  deposit the building  waste
material in mechanical compactor, if applicable,  or other designated areas, for
removal at no additional  expense to Customer.  Contractor  will supply all bags
and related  equipment  necessary for a proper  rubbish  removal  operation each
night.

                                      E-1


     If, in  compliance  with NYC recycling  laws,  tenant  separates  refuse at
source, Contractor will remove such refuse in accordance with such procedure.

     Damp wipe all waste receptacles nightly.

     Empty and clean all ashtrays  nightly.  Dust and wipe clean all  telephones
nightly.

     All venetian blinds to be lowered and set in a uniform  appearance  nightly
on all floors.

     All  uncarpeted  flooring to be swept  nightly,  using  approved  dust-down
preparation, and damp mopped as needed.

     All carpeting and rugs to be vacuum cleaned nightly.

     Dust all door louvers and other ventilating louvers within reach nightly.

     Clean  all  unpainted  metal  and  remove  fingerprints  nightly,  treat as
necessary.

     Wash clean all water fountains and coolers nightly.

     High dusting--done  quarterly (unless specified otherwise in tenant lease),
including:

          Dust all pictures,  frames,  charts, graphs, and similar wall hangings
          not reached in nightly  cleaning,  except  those works  identified  by
          Tenant.

          Dust clean all vertical surfaces,  such as walls,  partitions,  doors,
          and bucks and other surfaces not reached in nightly cleaning except as
          otherwise herein provided.

          Dust clean all pipes, ventilating and air conditioning louvers, ducts,
          high moldings and other high areas not reached in nightly cleaning.

          Dust all  exterior  surfaces of light  fixtures,  including  glass and
          plastic  enclosures.  Wash  interior and exterior of lighting  fixture
          lenses annually.

          Dust and inspect all venetian blinds.

     Vacuum  clean or replace (as directed by Builing  manager)  lint screens in
all perimeter  HVAC  enclosures  semi-annually,  if Building has such  perimeter
units. At same time, vacuum clean coils/fins and nozzles.

                                      E-2


     PRIVATE STAIRWELLS

     Vacuum all carpeted private stairwells nightly and keep in clean condition.
Uncarpeted  stairwells  should  be  vacuumed  or swept  nightly  using  approved
dust-down preparation.

     Certain  ELAS  rooms (to be  identified  by  Tenant)  will be off limits to
Contractor's cleaning personnel.

                          COMMON AREAS (BASE BUILDING)
                          ----------------------------

     SIDEWALKS AND PLAZAS

     Remove gum and spot clean  daily.  Steam or power  clean  daily,  autoscrub
weekly, temperatures permitting. Keep drain screens free of accummulated debris.
Clean subway grates, if any, monthly.

     Day  porter  to keep all sand urns and  equivalent  fixtures  screened  and
clean. Screen and clean same nightly.

     Remove  snow  from  all  regular  and  emergency   Building  entrances  and
approaches;  remove snow at curbs in front of the  Building  entrances  to allow
adequate  access by vehicles.  Remove snow from  concrete  walkways  immediately
adjacent to the Building,  all as and when required,  at no additional charge to
Customer. All entrances, exits, driveways, walkways (including plaza walkways if
applicable),  and crosswalks are to be made accessible and kept clean all times.
Snow removal should not hamper water flow to street catch basins.

     Day porter to keep exterior planting areas in clean condition.

                   EXTERIOR METAL, GLASS, AND POLISHED STONE

     Day  porter  to  maintain  exterior  granite  and  metalwork  up  to  first
horizontal caulking joint above retail store fronts.  Porter will also wipe down
and maintain in clean condition,  metal in Building entrance doors,  store front
trim,  exterior  window  frames and mullions,  standpipe  and sprinkler  siamese
connections,  and hose  bibs.  Generally,  porter  will  properly  maintain  the
exterior of the building so that there is uniformity of color and  brightness at
all times. Graffitti and marks will be removed immediately.

LOBBY  (INCLUDING  GROUND FLOOR LOBBY AREA WITHIN TENANT'S  CONTROLLED  ELEVATOR
       -------------------------------------------------------------------------
BANKS)
- ------

     All stone,  ceramic tile,  marble,  terrazzo and other unwaxed or untreated
flooring to be swept nightly,  using  approved  dust-down  preparation;  machine
scrub such flooring nightly and polish as necessary, but at least once a week to
produce appearance satisfactory to Owner. All linoleum, rubber, asphalt tile and
other  similar  types of  flooring  (that may be waxed or  treated)  to be swept
nightly, using approved dust-down preparation.  Such flooring in public areas to
be waxed or treated in approved manner as necessary, but at least once a month.

                                      E-3


     All  carpeting  and rugs to be spot  cleaned  and vacuum  cleaned  nightly.
Shampoo carpeting to maintain appearance satisfactory to Customer, not less than
quarterly.

     Wash all  entrance  mats as  necessary  to  maintain  clean  condition  and
appearance.

     Clean  all  unpainted  metal  and  remove  fingerprints  nightly,  treat as
necessary.  Polish all lobby entrance door push bars nightly, Wipe clean nightly
and polish as necessary all brass and other bright work.

     Damp wipe all waste receptacles nightly.

     Horizontal  louvers  to be dusted,  spot  cleaned,  treated  to  maintain a
uniform  appearance.  Dust all door and other  ventilating  louvers within reach
nightly.

     Day porter to maintain lobby floor in a clean condition throughout day and,
during wet weather, keep entrance mopped dry. Day porter to lay down, remove and
clean lobby rain mat runners as necessary.

     Day porter to rub down Building directory daily.

     Vertical  surfaces,  such as walls,  partitions,  doors,  and bucks, of all
corridors  and  lobbies to be dusted,  spot  cleaned,  treated  and  polished as
necessary.

     Clean  lights,  globes,  lenses and fixtures  (including  glass,  metal and
plastic lenses and enclosures) in lobby,  public areas, and maintenance areas as
often as necessary.

     Day porter to keep lobby and planting areas in clean condition.

                                PUBLIC CORRIDORS

     All carpet installed throughout the public corridor of the building will be
vacuumed nightly,  spot cleaned nightly, and shampooed to maintain an appearance
suitable to Customer.

     All stone,  ceramic tile,  marble,  terrazzo and other unwaxed or untreated
flooring to be swept nightly,  using  approved  dust-down  preparation;  machine
scrub such flooring  daily and polish as necessary,  but at least once a week to
achieve appearance satisfactory to Owner. All linoleum, rubber, asphalt tile and
other  similar  types of  flooring  (that may be waxed or  treated)  to be swept
nightly, using approved dust-down preparation.  Such flooring in public areas to
be waxed or treated in approved manner as necessary, but at least once a month.

                                      E-4


     Horizonal louvers to be dusted, spot cleaned, treated to maintain a uniform
appearance. Dust all door and other ventilating louvers within reach nightly.

     Clean  all  unpainted  metal  and  remove  fingerprints  nightly,  treat as
necessary. Wipe clean nightly and polish as necessary all brass and other bright
work.

     Contractor to clean public corridors and facilities.

LAVATORIES  AND REST ROOMS  (INCLUDING  ALL CORE  LAVATORIES  SERVING FULL FLOOR
TENANTS)

     Check all bathroom fixtures for leaks, clogs, and proper operation nightly.
Report any deficiencies to Building manager daily.

     Scour, wash and disinfect all basins, bowls, and urinals nightly;  odorless
disinfectants to be used.

     Wash all toilet seats both sides nightly.

     Hand dust and clean, washing where necessary,  all partitions,  tile walls,
dispensers and receptacles in all lavatories and rest rooms nightly.  Thoroughly
wash and polish all wall tile and stall  surfaces as necessary  but no less than
once a week.

     Sweep and wash all lavatory and rest room floors  nightly,  using  approved
disinfectants.  Wash and polish all  mirrors,  powder  shelves,  bright work and
enameled  surfaces in all lavatories and rest rooms nightly.  Machine scrub rest
room floors with disinfectants weekly.

     Empty paper towel and sanitary napkin disposal receptacles nightly. Deliver
waste paper and waste materials to location designated by the Customer.

     Fill all toilet  tissue  holders  nightly  (tissue to be  furnished  by the
Owner).  Fill  toilet  seat  cover  dispensers,  if any,  nightly  (covers to be
provided by tenant or Contractor).

     Wash waste cans,  towel  dispensers,  and  receptacles as necessary to keep
them clean and odor free, but at least once a week.

     Fill soap dispensers and paper towel  dispensers  nightly as required (soap
and  paper  towels to be  furnished  by  Contractor  or Owner at no  expense  to
tenant.)

     Day porter to check all bathroom  walls and  partitions  for graffiti daily
and remove same immediately.





                                      E-5




     Day porter to inspect and service men's  lavatories  and rest rooms (tissue
to be furnished by Owner) as necessary at no cost to Tenant.

     Day porter to fill soap  dispensers  and paper  towel  dispensers  in men's
lavatories  and rest  rooms  (soap  and  paper  towels  to be  furnished  by the
Contractor  or Owner at no cost to the  tenant).  If  required,  waste  cans and
receptacles to be emptied.  Lavatories and restrooms to be visited and policed a
minimum of once in the morning and once in the afternoon.

     Sufficient day matrons will be assigned to the Building inspect all ladies'
lavatories  and rest rooms at least twice a day.  They will insert toilet tissue
(tissue to be furnished by the Owner).  They will also service  sanitary  npakin
dispensers  with  sanitary  napkins  furnished  by  the  Contractor.  Fill  soap
dispensers and paper towel dispensers in ladies' lavatories and rest rooms (soap
and paper towels to be furnished  by the  Contractor  or Owner at no cost to the
tenant).

                                   ELEVATORS

     Day porter will keep elevator cars and escalators clean and neat during the
day.

     Elevator cab floors are to be treated with same methods and  frequencies as
comparable lobby floor surfaces. For example, if carpeted, vacuum and spot clean
nightly, shampoo as necessary to maintain appearance satisfactory to Customer.

     Elevator  cab walls,  metal work,  and saddles to be dusted and rubbed down
nightly.

     Interior and exterior of metal car and hatch doors  (including  saddles) of
all  elevators to be properly  cleaned and  treated.  Saddles to hand rubbed and
polished nightly.

     Day porter to dust and rub down all elevator doors, frames.

                                   STAIRWELLS

     Police all public  stairwells  throughout  building  daily and  maintain in
clean  condition.  Wet mop floors and  stairs as  required,  but at least once a
month. Wash quarterly. Wipe down handrails and posts weekly.

     Day porter to dust and clean fire hoses monthly,  report any obvious damage
to Building manager immediately.

     Day porter to keep public staircases policed during the day.

                                  LOADING DOCK

     Day porter to sweep loading dock, trucking area, etc., daily.

     Contractor  will scrub and  steam-clean  loading  dock walls and floors and
ceilings as necessary, but at least weekly,


                                      E-6




     Night porter to clean truck dock and ramps.

     Night porter to separate,  bail and/or  deposit  waste paper and rubbish as
directed by Customer in the loading dock area compactor or in area designated by
Customer for removal by others.

                             ROOF AND SETBACK ROOFS

     Day porter to police and sweep,  where  possible,  roof and setbacks weekly
(weather permitting). Clean out roof drains weekly.

                          LOCKER ROOMS AND STOREROOMS

     Keep  locker  rooms  storerooms,  and slop sink rooms in a neat and orderly
condition at all times.

                           MECHANICAL EQUIPMENT ROOMS

     Porter  will keep fan  rooms,  motor  rooms,  electric  closets,  telephone
closets and air  conditioning  rooms in neat and clean  condition.  Electric and
telephone closets to be policed weekly.  Police,  sweep, and mop engine rooms as
necessary, but at least monthly. Maintain all drain screens free of debris.

                                    GARAGES

     Night porter to police and broom sweep any private garage areas operated by
Customer and maintain  appearance  suitable to Customer.  Floors and walls to be
steam cleaned or hosed down monthly. Maintain all drain screens free of debris.

                         INITIAL CLEANING REQUIREMENTS

     Contractor  shall provide an "initial  cleaning" for newly occupied  tenant
areas and for any public building areas  subsequent to major  renovations as per
the specifications set forth below at no additional cost to owner.

  1.  Scrub all floors and wax resilient floors.

  2.  Wipe finger  marks and dust from  painted  metal and other partitions  and
      doors. Remove packing material where encountered.

  3.  Vacuum clean carpets and rugs.

  4.  Wash, clean and vacuum all air conditioning  units and enclosures,  inside
      and outside along perimeter and interior areas of the Building.


                                      E-7




  5.  Clean and set all venetian blinds for uniform appearance.

  6.  Dust lighting fixtures, inside and outside.

  7.  Wash and scrape clean all windows,  inside and outside,  partition  glass,
      glass doors, mail chutes and directory boards.

  8.  Clean metal window frames and surrounding metal, inside and outside. Clean
      exterior curtain wall column cover, sills and spandrels.

  9.  Remove  existing  packing  material  and  clean  elevator  floors,  walls,
      ceilings,  panels,  doors, hoistway entrance frames and doors and lighting
      and signal fixtures.

 10.  Remove existing packing material and clean all escalators  including steps
      and maintain metal in uniform bright appearance.

 11.  Scrub,  wash, dust and scrape all toilet room floors,  walls,  partitions,
      fixtures and accessories.  Polish all bright work, tile walls,  partitions
      and install supplies prior to tenant occupancy.

 12.  Prepare  areas to be  occupied,  in advance of moving date as required by
      Building  manager and re-clean  after  tenants move in for first  business
      day.

 13.  Scrub and mop main floor lobby and clean  public areas  continuously  upon
      completion of renovation.

 14.  Clean sidewalks,  driveways, loading dock and garage areas which have been
      released by construction contractor.



                                      E-8




                            WINDOW CLEANING SERVICE
                            -----------------------


     All windows,  and fixed glass from 2nd floor up to and including roof to be
cleaned  inside  and  outside  approximately  once  every  five  weeks,  weather
permitting.  Other  polished  surfaces  and  spandrels  which can be  cleaned by
squeegee once a year.

     Damp wipe all interior metal window frames,  pilasters and other  unpainted
interior metal surfaces of the perimeter  walls of the building each time window
interiors are washed.  Clean these  surfaces  annually with a suitable  cleaning
solution to obtain results  satisfactory to Building  manager.  Plaster walls or
other  surfaces  adjacent to these window frames to be prtected from staining or
damage; if damage occurs, Contractor to restore areas to original condition.

     Entrance  doors and lobby glass to be cleaned twice daily and kept in clean
condition at all times during the day.

     Exterior store front glass to be cleaned weekly.

     A daily work slip to indicate  location  and amount of windows  cleaned and
panels of  interior-partition  glass  cleaned  will be  provided  to  Customer's
representative to enable verification of services performed.

     Contractor to provide  necessary  labor and materials to properly  maintain
and operate all window cleaning rigs  (Customer's  and/or  Contractor's)  at all
times.  Contractor  will be  responsible  to insure that rigs meet all  Federal,
State, and City regulations governing use and operation of window cleaning rigs,
including  operation and  maintenance  of a radio  communication  system (walkie
talkie) compatible with Building radio communications system.

     Wherever  in this  Exhibit E reference  is made to Customer or Owner,  this
shall be taken to mean the Landlord.



                                      E-9



                                    EXHIBIT F

                                 LANDLORD'S WORK

     Landlord  shall (i) perform each of the items of work  described  below and
(ii) in the case of each item below which is not a condition  to delivery of the
applicable Block, substantially complete each item of work on or before the date
designated therefor.



ITEM OF WORK                                                     CONDITION TO DELIVERY
                                                        Block A                      Block B             Block C

                                                                                                 
1.   Demolish all applicable space from slab-to-slab,   yes                          yes                 yes
     including without limitation, all interior
     partitioning,  hung ceilings and support systems,  lighting, floor tile and
     glue,  carpeting and padding,  unused  conduits,  cables,  plumbing  lines,
     miscellaneous  steel,  duct work,  the partitions and doors at the elevator
     lobbies,  plumbing  fixtures,  all  electrical  closets  which are not base
     Building  electrical  closets and removal of  materials  (i.e.,  other than
     paint)  which  have been  applied to  convector  enclosures.  All  existing
     horizontal  cables and all conduits  and wiring in electric  and  telephone
     closets shall be cleaned out. The applicable  space shall be delivered free
     of debris and in broom-clean  condition.  Any damaged  fireproofing  on the
     columns shall be repaired.

2.   Landlord shall provide in the stairwell adjacent to    yes                    yes                   yes
     the electrical closet on each applicable floor at
     least 2 points on each floor for Tenant to tie into the Building's  Class E
     System.  All  existing  fire and safety  systems in the  applicable  space,
     including alarms, speakers, communications,  etc. shall be in working order
     and comply with  applicable  code (other  than any  compliance  required by
     reason of  Tenant's  Alterations).  Landlord  shall  provide  a riser  with
     sufficient power for all speakers and strobes  required by Laws,  including
     ADA. Landlord shall leave all existing speakers and strobes in place.

3.   Landlord shall provide all necessary infrastructure      yes                   yes                   yes
     with a sufficient sprinkler capacity and reserve to
     the  applicable  space  so as to  enable  installation  in such  space of a
     sprinkler system compliant with NYC building code. Tenant acknowledges that
     a 20  minute  reserve  will  be  provided.  Landlord  shall  deliver  valve
     connections to the main sprinkler line on each applicable  floor.  The main
     sprinkler  loop on each floor of the  Premises,  if not already  installed,
     shall be installed by Tenant.

4.   Landlord shall deliver main HVAC supply duct and         yes                   yes                   yes
     return opening to the core wall on each floor,
     including fire dampers.

5.   The induction units in the applicable space shall be     yes                   yes                   yes
     cleaned and vacuumed.

                                      F-1


6.    Landlord shall balance all induction units and          no - 15 Business      no - 15 days after    no - 15 days after
     deliver a balancing report to Tenant for review by       Days after Tenant     Tenant notifies       Tenant notifies
     Tenant's engineers.                                      notifies Landlord     Landlord of           Landlord of
                                                              of substantial        substantial           substantial
                                                              completion of         completion of         completion of
                                                              Tenant's initial      Tenant's initial      Tenant's initial
                                                              Alterations in the    Alterations in the    Alterations in the
                                                              applicable space      applicable space      applicable space

7.   Repair and close off the internal stairwell slab-cuts    yes - as to           yes - as to the       N/A
     between the 22nd and 23rd floors.  Repair and close      stairwell slab-cut,   mezzanine and
     off the mezzanine and two internal stairwell slab-cuts   structural supports   stairwell
     between the 12th and 13th floors.  The replaced slabs    and columns between   slab-cuts,
     shall have a load bearing capacity not less than the     the 22nd and 23rd     structural supports
     capacity for such space permitted by the certificate     floors                and columns between
     of occupancy for the Building.  The structural                                 the 12th and 13th
     supports shall be fireproofed and shall provide the                            floors
     same above ceiling clearances as available on the
     balance of the floor.  If columns need to be
     installed, they shall be lined up with existing
     columns on contiguous floors of the Building.

8.   Landlord shall furnish all required                      yes                   yes                   yes
     firestopping/fireproofing on walls, floors, ceilings
     and structural steel.

9.   All exposed piping is to be enclosed and insulated as    yes                   yes                   yes
     required to meet New York City Codes, including
     Building, Fire and Electrical Codes.

10.  All windows shall be weathertight with all broken and    yes                   yes                   yes
     chipped glass replaced.

11.  Landlord shall remove all asbestos, asbestos             yes                   yes                   yes
     containing materials and other hazardous materials, if
     any,  from the  applicable  space and other  areas in which  Tenant will be
     performing work (other than shafts and mechanical  rooms),  refireproof the
     applicable space and such other areas after removal of asbestos and deliver
     an ACP-5 Certificate (multiple originals) to Tenant for each portion of the
     Premises.  All asbestos  removal  shall be performed by a licensed  removal
     company.

12.  Landlord  shall not be required to perform a complete no - 30 days after no
     - 30 days after no - 30 days after  removal of asbestos from the shafts and
     mechanical  Tenant  designates Tenant designates Tenant designates rooms in
     which Tenant shall be performing  work, the portions of the the portions of
     the the portions of the provided,  however,  Landlord  shall perform a spot
     shafts and shafts and shafts and abatement of the affected  area, so Tenant
     is not  mechanical  rooms  in  mechanical  rooms  in  mechanical  rooms  in
     performing work in an asbestos condition. which work is to be which work is
     to be which work is to be                                performed             performed             performed

13.  All local law 5 devices are to be left in place,         yes                   yes                   yes
     temporarily supported.

14.  Landlord will provide sufficient hose cabinets on each   yes                   yes                   yes
     applicable floor (after demolition is completed) at
     locations with the core areas to comply with Code.

15.  The weatherstripping on all doors, if any, opening to    yes                   yes                   yes
     the exterior shall be weathertight.

                                      F-2


16.  Landlord  shall replace all solar film on the windows no - 30 days after no
     - 10 days after no - 6 days after in the  applicable  space which are shown
     as damaged on notice  from Tenant  notice from Tenant  notice from Tenant a
     punch list prepared by Landlord and Tenant after to Landlord to Landlord to
     Landlord  completion of demolition  and before the  commencement  (provided
     such (provided such (provided such of Tenant's work in such space, with new
     P-19  film  notice  may  not  be  notice  may  not  be  notice  may  not be
     manufactured by 3M. given before such given before such given before such
                                                              space is delivered    space is delivered    space is delivered
                                                              to Tenant).           to Tenant).           to Tenant).

17.  Landlord shall be responsible for ADA compliance with    yes                   yes                   yes
     respect to fire pull stations, warden stations,
     elevator  call  buttons  and  hall  lanterns  in the  core  areas  on  each
     applicable floor.

18.  Landlord shall provide building standard venetian        yes                   yes                   yes
     blinds for all windows in the applicable space.

19.  Landlord shall install a valved outlet on the base       no - 30 days after    N/A                   N/A
     Building steam riser at a location designated by         Tenant notifies
     Tenant.                                                  Landlord of the
                                                              location
                                                              accompanied by
                                                              applicable plans

20.  There shall be no violations against the Building        yes                   yes                   yes
     which would delay Tenant from obtaining a building
     permit for the performance by Tenant of Tenant's
     initial Alterations.

21.  Landlord shall provide Tenant with 2 scfms of            yes                   N/A                   N/A
     compressed air for Tenant's supplemental
     air-conditioning requirements at a valved outlet in
     close proximity to the 17th floor setback.

22.  Landlord shall install submeters to measure Tenant's     no - 60 days after    no - 60 days after    yes
     consumption of electricity in the applicable space,      delivery of           delivery of
     except for Tenant's express riser to the 15th floor      applicable space to   applicable space to
     UPS system.                                              Tenant                Tenant

23.  Landlord shall provide an express riser, terminating     N/A                   N/A                   no - 60 days after
     with a disconnect switch, with all associated                                                        delivery of space
     transformers (which need not be "K" type) and panels                                                 to Tenant
     to an electrical closet designated by Tenant on the
     11th floor.  Riser will consist of one set of four 500
     MCMCU.

                                      F-3


24.  Landlord shall install isolation dampers on all          no - the later of     yes                   yes
     applicable floors and modify fans for variable speed     March 1, 1996 and
     drive.                                                   the date Landlord
                                                              delivers the
                                                              applicable space to
                                                              Tenant.

25.  All induction units shall be in working condition        yes                   yes                   yes
     (consistent with the original specifications
     therefor), including all piping, valves and
     thermostats.

26.  Landlord shall demolish the bathrooms on the 11th        N/A                   N/A                   yes
     floor which are located outside the core of the
     Building.

27.  Landlord shall provide additional power via an express   February 15, 1996     N/A                   N/A
     riser from the basement to a disconnect switch to be
     identified by Tenant on the 15th floor for Tenant's
     telecommunications room requirement.  This riser will
     be provided from the new westerly service take-off
     located in the switch gear room.  Landlord shall
     install an electric meter with respect to such riser.

28.  Landlord shall provide the necessary roughing for the    N/A                   N/A                   yes
     11th core toilet either in accordance with base
     Building  plans  or  reasonably   modified  therefrom  to  accommodate  the
     telecommunications room immediately below on the 10th floor (e.g., fixtures
     may be wall mounted instead of floor mounted) and Tenant's design criteria.


                                      F-4


                                    EXHIBIT G

                               HVAC SPECIFICATIONS

The Building heating,  ventilation and air conditioning  system shall be capable
of maintaining (a) 76+2 degrees Fahrenheit dry bulb & 50% relative humidity when
outdoor  conditions are 95 degrees Fahrenheit dry bulb and 74 degrees Fahrenheit
wet bulb and (b) 70 degrees  Fahrenheit  dry bulb when outdoor  conditions are 0
degrees Fahrenheit dry bulb, and shall maintain  ventilation for minimum outside
fresh  air  make-up  rates  of 0.25  CFM  per  usable  square  foot.  Total  air
distribution  shall not be less than 1 CFM per usable square foot.  Building air
conditioning supply air systems shall be provided with minimum 45-55% efficiency
air filters.  The above design is based upon (i) an electrical heat  dissipation
load of 5.3 watts per usable square foot,  (ii)  occupancy  rate of 1 person per
100 usable square feet, and blinds drawn to 45 degrees in the exposures  subject
to direct  solar  radiation.  Interior  conditions  include both  perimeter  and
interior  spaces and  anticipate  a ceiling  height of 8'-0" above the  finished
floor.  The base Building  interior air handling system shall deliver the supply
air at a  temperature  not to exceed  55(0)F at the supply air shaft,  tapped to
each floor at a minimum static pressure of 1.25 w.g.


                                      G-1


                                    EXHIBIT H

                             RSF AND TENANT'S SHARE


                                              TAX     OPERATING
                      FLOOR    RSF           SHARE      SHARE

                        7       91,684      4.7486%   4.9547%
                        8       50,533      2.6172%   2.7308%
                        9       77,554      4.0167%   4.1911%
                       10       78,008      4.0402%   4.2156%
                       11       79,288      4.1065%   4.2848%
                       12       72,023      3.7303%   3.8922%
                       13       63,505      3.2891%   3.4319%
                       14       47,900      2.4809%   2.5886%
                       15       48,453      2.5095%   2.6184%
                       16       47,903      2.4810%   2.5887%
                       17       23,051      1.1939%   1.2457%
                       18       24,380      1.2627%   1.3175%
                       19       24,380      1.2627%   1.3175%
                       20       23,035      1.1930%   1.2448%
                       21       24,281      1.2576%   1.3122%
                       22       24,281      1.2576%   1.3122%
                       23       24,281      1.2576%   1.3122%
PRIMARY CONCOURSE SPACE         10,051      0.5206%   0.5432%
SECONDARY CONCOURSE SPACE          523      0.0271%   0.0283%


                                      H-1



                                    EXHIBIT I

                          FORM OF LANDLORD'S STATEMENT



                                                             DATE


RE:        TENANT NAME                                  SQ. FT

- --------------------------------------------------------------------------------

In accordance with the terms of your lease,  tenant shall pay its  proportionate
share of the increase in actual operating costs over the base year.


General Operating Costs For Operating
Year Ended                                               $

Base Year Amount                                           ___________

Increase over Base Year

Tenant's Proportionate Share
                                                           ___________%

Annual Escalation Amount

                                       I-1




                          STATEMENT OF OPERATING COSTS
                          YEAR ENDING DECEMBER 31, 1994


PAYROLL and RELATED EXPENSES                              $     2,448,071

PORTER SERVICES                                                 3,480,017

ELECTRIC SERVICES                                               4,598,628

STEAM                                                             965,640

WATER                                                             203,462

REPAIRS & MAINTENANCE                                           1,353,294

RUBBISH REMOVAL                                                   417,474

INSURANCE                                                         361,498

MISCELLANEOUS                                                      88,193

MANAGEMENT FEES                                                 2,037,742

PROFESSIONAL FEES                                                 166,027
                                                          ---------------

                                                               16,120,046

COST OF TENANTS' ELECTRICITY                                   (2,482,992)

COST OF TENANTS' SERVICES                                        (558,447)
                                                          ---------------

                                                          $    13,078,607
                                                          ===============

                                       I-2



                                    EXHIBIT J

                            ELECTRICAL SPECIFICATIONS

     Landlord  shall  provide,  at the  electrical  closets on each floor of the
Office Space, the following amperes of electrical service:

- --------- ----------- -------------- -------------
FL        ELEC        BASE BLDG      SUPPL
          CLOSET      AMPERES        AMPERES
- --------- ----------- -------------- -------------
- --------- ----------- -------------- -------------
22        1                     200             0
- --------- ----------- -------------- -------------
- --------- ----------- -------------- -------------
21        1                     200             0
- --------- ----------- -------------- -------------
- --------- ----------- -------------- -------------
20        1                     175             0
- --------- ----------- -------------- -------------
- --------- ----------- -------------- -------------
19        1                     200             0
- --------- ----------- -------------- -------------
- --------- ----------- -------------- -------------
18        1                     200             0
- --------- ----------- -------------- -------------
- --------- ----------- -------------- -------------
17        1                     175             0
- --------- ----------- -------------- -------------
- --------- ----------- -------------- -------------
16        1                     200             0
- --------- ----------- -------------- -------------
          ----------- -------------- -------------
          4                     175             0
          ----------- -------------- -------------
          ----------- -------------- -------------
          5                     175             0
          ----------- -------------- -------------
          6                     100             0
- --------- ----------- -------------- -------------
                                650
- --------- ----------- -------------- -------------
15        1                     150             0
- --------- ----------- -------------- -------------
          ----------- -------------- -------------
          4                     175             0
          ----------- -------------- -------------
          ----------- -------------- -------------
          5                     175             0
          ----------- -------------- -------------
          ----------- -------------- -------------
          6                     100             0
- --------- ----------- -------------- -------------
                                600
- --------- ----------- -------------- -------------

                                      J-1


14        1                     200             0
          ----------- -------------- -------------
- --------- ----------- -------------- -------------
          4                     175             0
          ----------- -------------- -------------
          ----------- -------------- -------------
          5                     175             0
          ----------- -------------- -------------
          ----------- -------------- -------------
          6                     100             0
- --------- ----------- -------------- -------------
                                650
- --------- ----------- -------------- -------------
13        2                     100             0
          ----------- -------------- -------------
- --------- ----------- -------------- -------------
          3                     100             0
          ----------- -------------- -------------
          ----------- -------------- -------------
          4                     125             0
          ----------- -------------- -------------
          ----------- -------------- -------------
          5                     125             0
          ----------- -------------- -------------
          ----------- -------------- -------------
          6                     125           600
- --------- ----------- -------------- -------------
                                575
- --------- ----------- -------------- -------------
12        2                     125
          ----------- -------------- -------------
- --------- ----------- -------------- -------------
          3                     125
          ----------- -------------- -------------
          ----------- -------------- -------------
          4                     125
          ----------- -------------- -------------
          ----------- -------------- -------------
          5                     125           800
          ----------- -------------- -------------
          ----------- -------------- -------------
          6                     125
- --------- ----------- -------------- -------------
                                625
- --------- ----------- -------------- -------------
11        2                     125
          ----------- -------------- -------------
- --------- ----------- -------------- -------------
          3                     125
          ----------- -------------- -------------
          ----------- -------------- -------------
          4                     125          400 1
          ----------- -------------- -------------
          ----------- -------------- -------------
          5                     125
          ----------- -------------- -------------
          ----------- -------------- -------------
          6                     150
- --------- ----------- -------------- -------------
                                650
- --------------------- -------------- -------------
TOTAL                         4,900         1,800
- --------------------- -------------- -------------

      BASE BUILDING & SUPPLEMENTAL AVAILABLE POWER IS BASED ON SWITCH SIZE

     1 Such  supplemental  power shall be located in an electrical closet on the
11th floor to be designated by Tenant.

                                      J-2


                                    EXHIBIT K

                          FORM OF ASSUMPTION AGREEMENT

     Assignment and Assumption of Lease, dated as of the ____ of ________, ____,
between   __________________________   ("Assignor")   and   ____________________
("Assignee").

                              W I T N E S S E T H:

     WHEREAS,   Assignor  is  the  tenant   under  that   certain   lease  dated
_____________,  between 1290 Associates,  as landlord,  and Assignor,  as tenant
(the "Lease"), covering the entire 11th through 22nd floors and a portion of the
concourse  floor of a building  known as 1290 Avenue of the Americas  located in
New York, New York;

     WHEREAS,  Assignor  desires to assign all of its  interest  in the Lease to
Assignee and Assignee  desires to assume all  Assignor's  obligations  under the
Lease, on the terms and conditions hereinafter set forth.

     NOW, THEREFORE, Assignor and Assignee hereby agree as follows:

     1. Assignor hereby assigns to Assignee all of Assignor's  right,  title and
interest in, to and under the Lease, effective as of ___________ (the "Effective
Date").

     2. Assignee, for the benefit of Assignor and the landlord,  hereby assumes,
and  agrees to be bound by and to  perform,  all of the  covenants,  agreements,
terms, provisions and conditions on the part of the tenant under the Lease to be
kept, performed and observed from and after the Effective Date.

     3. This  Assignment and Assumption of Lease shall be binding upon and inure
to the benefit of the parties' respective successors and assigns.

                                      K-1


     IN WITNESS WHEREOF, Assignor and Assignee have executed this Assignment and
Assumption of Lease as of the day and year first above written.

                                               Assignor

                                               ----------------------------

                                               By:__________________________
                                                     Name:
                                                     Title:

                                               Assignee

                                               ----------------------------

                                               By:__________________________
                                                    Name:
                                                    Title:
                                      K-2


                                   EXHIBIT "L"

                        BUILDING SECURITY SPECIFICATIONS

                               SECURITY PROCEDURES

     During the hours of 8 a.m. to 6 p.m. people can freely access and leave the
building without signing a log sheet or show  identification.  Security measures
are left to each tenant's  discretion within their premises. This does not apply
to delivery or messenger personnel.

     Messenger and delivery  personnel are diverted by signage or lobby security
to the front desk  where  they are asked to show ID and sign in on a  "MESSENGER
LOG SHEET".

     If a messenger or delivery  person  refuses or is unable to produce a valid
company ID, they are not permitted into the building.

     At  that  point,  so  as  to  minimize  any  inconvenience  (caused  by  an
uncooperative  messenger) to a tenant, security is instructed to call the tenant
expecting the package to ask them to meet the messenger in the lobby.

     During  non-business  hours  (6 p.m.  to 8 a.m.  weekdays  and  all-day  on
weekends and holidays) all persons entering the building are required to show ID
and sign in and sign out when leaving.

     At all times,  any person  leaving the building with  packages,  equipment,
etc. must have a tenant property pass to be given to the lobby guard.

     The  loading  dock and freight  cars  operate  Monday to Friday  (excluding
holidays) form 8 a.m. to 6 p.m. All deliveries  (other than hand held items) are
made through the loading dock.

     Construction material,  large furniture deliveries,  and move projects must
be scheduled during non-business hours.

                           SECURITY EQUIPMENT FEATURES

The following areas are equipped with CCTV:

        Front Lobby -     With a panning feature

        Freight Cars -    Stationary

        Concourse Corridor -     Stationary (there are several cameras covering
                                 the entire corridor to the Rockefeller Center 
                                 entrance)

                                      L-1



                                   EXHIBIT "L"

                           1290 Avenue of the Americas

                           SECURITY EQUIPMENT FEATURES

        Lobby renovation will include all passenger elevators - Stationary

        Truck and Car Lifts -           Stationary

        Exterior Entrance to Garage -   Stationary

        Garage -   With panning feature

        Sub-Cellar Corridor -           Stationary

        Sub-Cellar Freight Elevator Lobby -    Stationary

     There are 2 recorders  located in the security office in the concourse that
intermittently record all or specific CCTV cameras 24 hours a day 7 days a week.
All tapes are kept for 2 weeks before being re-used.

     In addition to the above, we also have in place a guard tour system with 40
stations located at various common areas throughout the building.

     The security  guard  carries a data  recorder  when he goes on a designated
tour of the building.  Each station is numbered  (1-40) and as the guard reaches
each  station he uses the data  recorder  with the  station box and each stop is
recorded (date, time,  location).  These tours are completed at least twice each
shift.

     The following morning,  the security  supervisor prints out the information
from the data recorders and reviews the tours of each shift.

                              GARAGE & LOADING DOCK

     The garage and loading dock share same entrance  located on east end of the
building on 52nd street side.

     During hours of 7 A.M. to 6 P.M. Mon to Fri, a security  guard is posted at
entrance way. He will check each vehicle's  license plate number to see if it is
authorized to park, log time and license plate number.


                                       L-2




                                   EXHIBIT "L"

                           1290 Avenue of the Americas

                              GARAGE & LOADING DOCK

     He will then allow the  vehicle to enter  either  large or small  hydraulic
elevator which will carry vehicle 2 levels below grade. A second  security guard
will indicate  what area the vehicle  should be parked in that  particular  day.
Typically  upon entering  garage area right side has been  dedicated for monthly
parking on a first come,  first serve basis.  The vehicle keys must be left with
security guard on duty.

     The vehicle  license  plate number will be recorded when leaving the garage
area.

     During all other hours & holidays  the garage and loading  dock are closed.
Monthly  vehicles  can enter the garage by  notifying  security by entering  the
building via 6th Avenue night  entrance.  Security will open the garage area and
escort you down and up to lobby level where you must sign in and leave your keys
at register. Same procedure must be followed when exiting the garage.


                                       L-3




                                    EXHIBIT M

                             FORM OF NON-DISTURBANCE
                        AND ATTORNMENT AGREEMENT BETWEEN
                        TENANT AND THE INDENTURE TRUSTEE

     THIS  AGREEMENT,  made as of the  _______  day of  __________,  1995 by and
between NATIONSBANK OF TENNESSEE,  N.A., a national banking corporation,  having
an office at 1301 Gervais Street,  Columbia,  South Carolina 29201  (hereinafter
called "Mortgagee"),  THE EQUITABLE LIFE ASSURANCE SOCIETY OF THE UNITED STATES,
a New York  corporation,  having an office at 787 Seventh Avenue,  New York, New
York  10019  (hereinafter  called  "Tenant")  and  1290  ASSOCIATES,  a New York
partnership having an office c/o Olympia and York Companies  (U.S.A.),  237 Park
Avenue, New York, New York 10019.

                              W I T N E S S E T H:

     WHEREAS,  Mortgagee is the trustee under that certain Mortgage Spreader and
Consolidation  Agreement and Trust Indenture dated March 20, 1984 (said Mortgage
Spreader  and  Consolidation  Agreement  and Trust  Indenture,  as  amended  and
supplemented  and  as  it  may  be  amended,   increased,   renewed,   modified,
consolidated,   replaced,  combined,  substituted,  severed,  split,  spread  or
extended, being hereinafter referred to as the "Mortgage") between Manufacturers
Hanover Trust Company,  predecessor-in-interest  to Mortgagee,  as trustee,  and
certain mortgagors described therein which was recorded on March 20, 1984 in the
Office of the City  Register,  New York County in Reel 775, Page 1097, and which
encumbers,  among other  properties,  the land and the building  located at 1290
Avenue  of  the  Americas,   New  York,  New  York  (the  "Property")  and  more
particularly described on Exhibit A annexed hereto,

     WHEREAS,  Tenant and 1290 Associates (together with any successor holder of
the Landlord's  interest under the Lease,  being hereinafter  called "Landlord")
have entered into a certain agreement of lease dated as of _______________, 1995
(the "Lease") initially covering the eleventh through  twenty-second floors (the
"Demised Premises") in the building forming a part of the Property,

     NOW, THEREFORE,  in consideration of the mutual agreements herein contained
and other good and valuable consideration,  the receipt and sufficiency of which
is hereby acknowledged, the parties hereto agree as follows:

     1. Tenant covenants and agrees that the Lease now is and shall at all times
continue to be subordinate to the Mortgage.  Tenant, upon request, shall execute
and  deliver  any  certificate  or other  instrument  which  the  Mortgagee  may
reasonably request to confirm said subordination by Tenant.

     2. Tenant certifies that (i) Tenant is the owner and holder of the Tenant's
interest  under the Lease,  (ii) the Lease is presently in full force and effect
and  unmodified,  (iii) no rent or  additional  rent payable under the Lease has
been paid more than one (1) month in advance of its due date (it being expressly
agreed that any rent abatements,  set-offs or deductions  expressly provided for
in the Lease shall not be deemed an advance  payment of rent or additional  rent
under this Agreement), (iv) no default exists under the Lease, and (v) there are
no  offsets  or  defenses  as of the date  hereof to the  payment  of the rents,
additional rents or other sums payable under the Lease.

                                      M-1


     3. As long as no default  exists under the Lease which has continued  after
notice and beyond the  expiration of any  applicable  grace period as and to the
extent provided in the Lease (and provided that nothing shall imply any right of
Tenant to further  notice if Landlord  has  previously  provided  such  notice),
Mortgagee  shall  not  name  Tenant  as a  party  defendant  to any  action  for
foreclosure or other  enforcement of the Mortgage  (unless required by law), nor
shall the Lease be terminated by Mortgagee in connection  with, or by reason of,
foreclosure or other  proceedings  for the  enforcement  of the Mortgage,  or by
reason of a transfer of the Landlord's  interest under the Lease pursuant to the
taking  of a deed  in  lieu  of  foreclosure  (or  similar  device)  whether  in
connection with a bankruptcy proceeding or otherwise,  nor shall Tenant's use or
possession of the Demised  Premises be interfered  with by Mortgagee  (except to
the extent  permitted  under the Lease),  except that the person  acquiring,  or
succeeding  to, the interests of the Landlord in the Property as a result of any
such action or proceeding or taking of a deed in lieu of foreclosure (including,
without limitation, Mortgagee), and such person's successors and assigns (any of
the foregoing being hereinafter referred to as the "Successor"), shall not be:

     (a) subject to any credits,  offsets, defenses or claims which Tenant might
have against any prior Landlord, except that a Successor shall be subject to any
credits,  offsets and defenses to which  Tenant may be entitled  pursuant to the
express provisions of the Lease; nor

     (b) bound by any rent or  additional  rent which Tenant might have paid for
more than one (1) month in advance to any prior Landlord, unless such prepayment
shall have been made with Mortgagee's prior written consent; nor

     (c)  liable  for  any act or  omission  of any  prior  Landlord  except  as
expressly provided in this Agreement,  it being understood that the foregoing is
not  intended to (i) relieve a Successor of any  liability  arising by reason of
its acts or  omissions  from and after the date the  Successor  succeeds  to the
rights of the prior  Landlord,  including a  continuation  of the failure of the
prior  Landlord to perform its  obligations  under the Lease,  in which case the
Successor upon receipt of notice of such  continuation  from Tenant shall have a
reasonable  period of time to remedy same (it being  agreed that to the extent a
time  period is granted  Landlord  in the Lease for such remedy such time period
shall be deemed a reasonable period of time for purposes of this clause (i)), or
(ii) deny Tenant the benefit of any rent offset  right,  abatement  or credit to
which Tenant is entitled  under the Lease,  subject to the express terms hereof.
Notwithstanding  the foregoing,  the Successor shall not be liable to Tenant for
any claim  Tenant may have  against a prior  Landlord  under the  provisions  of
Section 6.12 of the Lease (by way of example,  the Successor shall not be liable
for any loss or damage to Tenant caused by the negligence of a prior Landlord or
its agents, servants, employees or contractors); nor

     (d) bound by any covenant to undertake or complete any Landlord's Work with
respect to any Block of space or any Offer  Space or the Lobby  Renovation  Work
(as  such  terms  are  defined  in the  Lease);  provided  however;  that if the
Successor  shall fail to  complete  any such work,  then  Tenant  shall have the
following  rights (which shall be the sole and exclusive  remedies  available to
Tenant for such failure): (i) in the case of the Successor's failure to complete
the Landlord's Work with respect to any Block of space Tenant shall,  subject to
the terms  hereof,  have the rights  described in Sections 1.03 and 10.01 of the
Lease,  (ii) in the case of Successor's  failure to complete the Landlord's Work
with respect to any Offer Space Tenant shall,  subject to the terms hereof, have
the rights  described in Sections 1.06 and 10.01 of the Lease,  and (iii) in the
case of Successor's  failure to complete the Lobby Renovation Work Tenant shall,
subject to the terms hereof, have the rights described in Section 8.21(c) of the
Lease. The Successor's  failure to complete any such work shall not constitute a
default by the Successor  under the Lease giving rise to any remedies other than
as expressly set forth in this paragraph (d); nor

                                      M-2


     (e) be required to account for any security deposit other than any security
deposit actually delivered to the Successor; nor

     (f) liable for any payment to Tenant of any sums or the  granting to Tenant
of any credit in the nature of a  contribution  towards  the cost of  preparing,
furnishing  or moving into the  Demised  Premises  or any  portion  thereof,  or
otherwise  (except to the extent  provided in  paragraph  (a) above),  provided,
however,  that the Successor  shall be  responsible  to pay to Tenant any unpaid
portion of the Block A and B Allowance,  the Block C Allowance and the Expansion
Allowance (as such terms are defined in the Lease and  collectively  referred to
herein as "Landlord's  Contributions")  as and when the same are due and payable
under the Lease; provided,  further, however, that the sole and exclusive remedy
available to Tenant in the event the  Successor  shall fail to pay any or all of
the Landlord's  Contributions  shall be to exercise the set-off rights described
in  Section  10.05 of the Lease  and the  Successor's  failure  to make any such
payment shall not  constitute a default by the Successor  under the Lease giving
rise to any remedies other than the set-off  rights  expressly set forth in such
Section 10.05.  Notwithstanding  the foregoing,  Mortgagee  shall have the right
(but not the obligation) if Landlord shall default in funding all or any portion
of the Landlord's Contributions to pay such amounts to Tenant; nor

     (g) bound by any modification of the Lease made without the written consent
of Mortgagee,  including without limitation any agreement by Tenant to surrender
the Lease. Mortgagee agrees not to unreasonably withhold, delay or condition its
consent to a modification of the Lease.

     4. (a) If the interest of the Landlord under the Lease shall be transferred
by reason of foreclosure or other proceedings for enforcement of the Mortgage in
which Tenant has not been named as party  defendant or pursuant to a taking of a
deed in lieu of foreclosure  (or similar  device)  whether in connection  with a
bankruptcy  proceeding  or  otherwise,  the  Lease  shall not be  terminated  or
affected  thereby but shall  continue in full force and effect as a direct lease
between the  Successor  and Tenant and Tenant  shall be bound to the  Successor,
and,  except as expressly  provided in this  Agreement,  the Successor  shall be
bound to Tenant,  under all of the terms,  covenants and conditions of the Lease
for the balance of the term thereof remaining, with the same force and effect as
if the Successor  were the Landlord,  and Tenant does hereby (i) agree to attorn
to the Successor,  including Mortgagee if it be the Successor,  as its landlord,
(ii) affirm its obligations under the Lease, and (iii) agree to make payments of
all sums due under the Lease to the Successor, said attornment,  affirmation and
agreement  to be  effective  and  self-operative  without the  execution  of any
further  instruments,  upon the  Successor  succeeding  to the  interest  of the
Landlord  under the Lease,  provided  that if the  Successor  requests,  without
implying any obligation to do so on the  Successor's  part,  Tenant will confirm
the attornment  described herein to the Successor in writing.  Tenant waives the
provisions  of any  statute or rule of law now or  hereafter  in effect that may
give or purport  to give it any right or  election  to  terminate  or  otherwise
adversely affect the Lease or the obligations of Tenant  thereunder by reason of
any foreclosure or similar proceeding.

     (b) Provided the Lease has not been previously cancelled or terminated,  if
(i)  Mortgagee or any other  Successor  shall acquire title to the Property upon
foreclosure  in an action in which  Mortgagee  shall have been  required to name
Tenant as a party  defendant,  and (ii) Tenant is not in default under the Lease
after notice and beyond the expiration of all applicable  cure periods as and to
the extent  provided in the Lease (and  provided  that  nothing  shall imply any
right of Tenant to further  notice if  Landlord  has  previously  provided  such
notice),  then, in such event, Mortgagee or any other Successor (as the case may
be) shall enter into a new lease with Tenant upon the same terms and  conditions
as were contained in the Lease,  except that (x) the obligations and liabilities
of  Mortgagee or other  Successor  (as the case may be) under any such new lease
shall be  subject to the terms and  conditions  of this  Agreement,  and (y) the
expiration  date of such new lease shall  coincide with the original  expiration
date of the Lease.  Tenant shall  execute any such new lease and shall attorn to
Mortgagee or the other Successor (as the case may be) so as to establish  direct
privity  between  Mortgagee  or such  other  Successor  (as the case may be) and
Tenant.

                                      M-3


     (c) If (i) Landlord, as debtor-in-possession, or any trustee appointed in a
bankruptcy  case  of  Landlord,   obtains  an  order  of  the  Bankruptcy  Court
authorizing  the  rejection  of the  Lease  in  accordance  with  ss.365  of the
Bankruptcy Code (as hereinafter defined), and Tenant elects to retain its rights
under the Lease in  accordance  with  ss.365(h)  of the  Bankruptcy  Code,  (ii)
Mortgagee  or any other  Successor  shall  acquire  title to the  Property  upon
foreclosure  or by the  acceptance  of a deed in lieu  thereof  or by any  other
means,  and (iii)  Tenant is not in  default  under the Lease  after  notice and
beyond  the  expiration  of all  applicable  cure  periods  as and to the extent
provided in the Lease (and provided that nothing shall imply any right of Tenant
to further notice if Landlord has previously provided such notice) then, in such
event,  Mortgagee or any other Successor (as the case may be) shall enter into a
new lease with Tenant upon the same terms and  conditions  as were  contained in
the Lease, except that (x) the obligations and liabilities of Mortgagee or other
Successor  (as the case may be) under any such new lease shall be subject to the
terms and conditions of this Agreement,  and (y) the expiration date of such new
lease shall  coincide  with the original  expiration  date of the Lease.  Tenant
shall  execute  any such new lease and shall  attorn to  Mortgagee  or the other
Successor  (as  the  case  may be) so as to  establish  direct  privity  between
Mortgagee or such other Successor (as the case may be) and Tenant.

     5. (a)  Tenant  shall  notify  Mortgagee  of any  default,  breach or other
failure (a "Default") by Landlord  under the Lease which would entitle Tenant to
cancel or terminate the Lease. If Landlord fails to cure any Default as to which
Tenant is obligated to give notice pursuant to the preceding sentence within the
time period,  if any,  provided for in the Lease and such Default is of a nature
which  can be cured by the  payment  of  money,  then  Mortgagee  shall  have an
additional  10 days within which to cure such Default  after receipt of Tenant's
notice  that  Landlord  has  failed to cure  same,  and the  Lease  shall not be
cancelled or terminated  unless Mortgagee shall have failed to cure such Default
(without  implying any  obligation to do so) prior to the  expiration of such 10
day period.

     (b) If (A) an  Eviction  shall  occur  causing  a  portion  of the  Demised
Premises  constituting not less than 50,000 rentable square feet of Office Space
to  become  Untenantable  (as such  terms are  defined  in the  Lease)  and such
Eviction shall continue for the requisite number of days provided for in Section
10.03 of the  Lease  such  that  Tenant  shall  then be  entitled  to  deliver a
termination  notice  under  Section  10.03 of the Lease or (B)  Tenant  shall be
entitled to terminate the Lease by reason of an Eviction described in clause (i)
of Section 10.03(a) of the Lease, then in either such case, Tenant shall provide
Mortgagee notice of such event (the date of such notice being referred to as the
"Notice Date") and Tenant shall not exercise its right to terminate the Lease if
(x) (i) within 15 days after the Notice Date Mortgagee  shall commence an action
seeking the appointment of a receiver, (ii) within 30 days after commencement of
such action such receiver has been appointed,  and (iii) upon such  appointment,
Mortgagee  shall  request such  receiver to cure the Eviction and such  receiver
shall thereafter  diligently pursue the cure of the Eviction,  or (y) Mortgagee,
within 15 days after the Notice Date,  shall  otherwise  commence and thereafter
diligently  pursue  the actual  cure of the  Eviction  (it being  agreed for the
purposes  hereof  that  taking  steps to  foreclose  the  Mortgage  or to obtain
possession  of the  Property  shall not be deemed to be a  commencement  of such
cure).

     (c) The  provisions  of  paragraphs  (a) and (b) above are  intended  to be
applicable to Mortgagee prior to its becoming the Successor, and, from and after
the date on which  Mortgagee shall become the Successor,  Mortgagee's  rights as
the  Successor  in the  circumstances  described  in this  paragraph  5 shall be
governed by the provisions of paragraph  3(c)(i) above such that  Mortgagee,  as
the  Successor,  shall have a reasonable  period of time to remedy the matter in
question  (taking into account the time which  Mortgagee had available to it for
such purpose under this paragraph 5 prior to becoming the Successor).

                                      M-4


     (d) Any  termination  of the  Lease by Tenant  pursuant  to  Section  10.03
without  compliance with the applicable  provisions of this paragraph 5 shall be
without force or effect and shall be void ab initio.

     6. (a) If (i) Landlord  shall fail to (x) furnish any of the services which
it is  required  to  furnish  pursuant  to the  Lease or (y) make any  repair or
replacement  which it is  required  to make under the Lease or (z)  perform  any
other obligation of the Landlord under the Lease, (ii) such failure results in a
material  interference  with Tenant's use and occupancy of the Demised Premises,
(iii)  the  curing of such  condition  would  require  work to be  performed  or
otherwise  affect  space in the  Landlord  Obligation  Areas (as  defined in the
Lease) or elsewhere outside of the Demised Premises, (iv) Tenant has obtained an
arbitrator's  decision as provided in Section  8.09 of the Lease that such event
has occurred and is Landlord's  responsibility  to remedy,  or Landlord,  in bad
faith,  fails to comply with the  arbitration  procedures set forth in the Lease
and  Mortgagee  fails to elect to  participate  in such  arbitration  proceeding
pursuant to paragraph (c) below,  and (v) Landlord shall  thereafter fail to act
diligently (subject to Force Majeure and Tenant Delay, as such terms are defined
in the Lease) to cure such  condition  and  Tenant  shall  deliver to  Mortgagee
notice of  Landlord's  continued  failure  (which  notice shall  reference  this
paragraph  6(a) of this  Agreement,  shall  state that the events  described  in
clauses (i) through (v) above have occurred and shall include  Tenant's  request
that Mortgagee take the hereinafter described actions), then (A) Mortgagee shall
as immediately as practicable commence an action seeking specific performance by
Landlord  of the  Landlord's  obligations  in  question,  and  (B)  if  Landlord
continues  to fail to perform  such  obligations  (subject to Force  Majeure and
Tenant Delay)  notwithstanding  a court order directing  performance,  then upon
Tenant's  request  Mortgagee  shall as immediately  as practicable  commence and
diligently  pursue an action for the  appointment of a receiver for the Property
and, upon  appointment  of such receiver,  Mortgagee  shall request the court to
authorize  and direct the  receiver to perform the  obligations  which  Landlord
shall have failed to perform.  In the event that  Mortgagee  is unable to pursue
the actions described in clauses (A) and (B) above by reason of the commencement
by or against  Landlord of a proceeding  under the  Bankruptcy  Code,  11 U.S.C.
ss.101  et  seq.,  as now in  effect  or as  hereafter  amended,  or  under  the
provisions of any successor statute thereto (the "Bankruptcy  Code"),  Mortgagee
shall as  immediately  as  practicable  seek the  relief  in  question  from the
Bankruptcy  Court or otherwise seek  authorization  from the Bankruptcy Court to
pursue such relief  notwithstanding the commencement of such proceeding.  Tenant
acknowledges that the determination of whether a matter  constitutes a "material
interference  with  Tenant's  use and  occupancy  of the  Demised  Premises"  as
provided  in clause  (ii) above  shall be without  regard to the  provisions  of
Section 10.01(e) of the Lease which reflect Landlord's and Tenant's agreement as
to what constitutes a material portion of the Demised Premises.  Notwithstanding
the foregoing,  Mortgagee  shall not be obligated to make rents and other income
from the Property  available for the purpose of funding Landlord  obligations to
be performed by the receiver  under this  paragraph 6 in excess of $4,500,000 in
any year,  Mortgagee  agreeing to make rents and other  income from the Property
actually  received by it up to $4,500,000 in any year  available to the receiver
for such purpose.  Tenant agrees that it shall not request Mortgagee to take the
actions  described  in clauses  (A) and (B) above with  respect to a  particular
Landlord  default if and to the extent Tenant shall have exercised its self-help
rights set forth in the Lease and thereby cured the Landlord's  default,  unless
such default is of a recurring  nature and Tenant has  delivered to Landlord and
Mortgagee  a notice  stating  that  Tenant no longer  intends  to  exercise  its
self-help  rights with respect to such default.  In addition,  the provisions of
this  paragraph  6(a) shall be  applicable  only to  matters  which give rise to
Tenant's  right of  self-help  under  Section  10.01(a)  of the  Lease and which
constitute a "material  interference  with the Tenant's use and occupancy of the
Demised Premises" and shall be inapplicable to matters which do not give rise to
any such right of self-help under Section 10.01(a) of the Lease or which do give
rise thereto but which do not constitute a "material  interference with Tenant's
use and occupancy of the Demised Premises".

                                      M-5


     (b) Subject to the  provisions of this  paragraph  (b),  Tenant's  recourse
against Mortgagee for Mortgagee's  failure to perform its obligations under this
paragraph 6 shall be limited to the interest of Mortgagee in the  Property.  For
purposes of this  paragraph 6, the  "interest of the  Mortgagee" in the Property
shall be  deemed  to mean the  rents  and  other  income  actually  received  by
Mortgagee  from the  Property  after the payment of the costs of  operating  the
Property but prior to the payment of debt service.  Mortgagee  acknowledges that
the financial projections delivered by Landlord to Tenant reflect an anticipated
net operating  deficit (prior to debt service) for the Property  during calendar
year 1996.  Mortgagee  agrees that during calendar year 1996 only,  Tenant shall
also have recourse against the "interest of Mortgagee" (as defined above) in 237
Park  Avenue,  New  York,  New York  for  Mortgagee's  failure  to  perform  its
obligations  under this  paragraph 6,  provided  that the  requirements  of this
sentence  shall be of no further force or effect if Landlord or Mortgagee  shall
(i) deliver to Tenant updated  projections  reflecting new or additional sources
of revenue  (i.e.,  executed  new leases or  amendments  to existing  leases) or
documented reduction of expenses which eliminate the above-described deficit and
provide for  projected  net  operating  income for the Property for 1996 (or the
balance thereof) of not less than $4,500,000 (less any amount funded during 1996
under  paragraph (a) above),  or (ii) otherwise  provide Tenant  evidence of the
availability  of not less than  $4,500,000  (less any amount  funded during 1996
under paragraph (a) above) to fund Mortgagee's agreements under this paragraph 6
for 1996.  The foregoing  provisions  shall not limit  Tenant's right to set-off
against the rents next coming due under the Lease any amounts payable under this
paragraph 6 in excess of the foregoing $4,500,000  limitation on the Mortgagee's
liability  under this  paragraph  (as well as any other  set-off)  to the extent
Tenant elects to fund such excess costs  pursuant to its self-help  rights under
the Lease and such set-off is otherwise permitted under the terms of the Lease.

     (c) Tenant's rights under this paragraph 6 are expressly  conditioned  upon
(i) Tenant  delivering  to Mortgagee  copies of all notices  delivered by Tenant
relating  to the  Landlord  default  which  is the  subject  of  Tenant's  claim
concurrent  with their delivery to Landlord,  and (ii) Mortgagee  being provided
the opportunity by Tenant to monitor and participate in any arbitration or other
proceeding  related to the Landlord  default.  Tenant shall deliver to Mortgagee
concurrent  with  delivery  to or  receipt  from  Landlord  or  the  arbitrators
determining any dispute,  a copy of any submission,  claim or pleading served by
or upon Tenant or delivered to or received from the arbitrators. Mortgagee shall
have the  right to  appear  before  and make  presentations  to the  arbitrators
determining any dispute within the time periods  provided in Section 8.09 of the
Lease.

     (d) The provisions of this paragraph 6 shall terminate and be of no further
force or effect (except that the  exculpatory  provisions of paragraph (b) above
shall  survive  such  termination)  if (i) the  ratio of (x) the  projected  net
operating  income from the Property  (calculated  prior to debt service) for the
succeeding 24 month period to (y) the debt service projected to be payable under
the Mortgage  for such period shall equal or exceed 1.25,  or (ii) to the extent
that the Property remains  cross-collateralized  with 237 Park Avenue, the ratio
of (A) the projected net operating  income from the Property and 237 Park Avenue
(calculated prior to debt service) for the succeeding 24 month period to (B) the
debt service  projected  to be payable  under the Mortgage for such period shall
equal or exceed 1.25. For purposes of the foregoing,  net operating income shall
include  rental income only from signed leases for which the initial  Landlord's
work or tenant work  allowance  has been funded or for which funds are available
and have been  segregated,  and projected  debt service shall include  projected
interest  at the stated  rate of  accrual  and the  greater of actual  scheduled
amortization  or the  amortization  that would be  payable  during  such  period
assuming a 25 year self-liquidating amortization schedule.

                                      M-6


     7. Notwithstanding anything to the contrary contained in this Agreement:

     (a) In the event that a receiver,  trustee or any other  similar  person or
entity  acting in like  capacity is appointed  for the Property in any action or
proceeding, then provided the Lease has not been cancelled or terminated and for
so long as Tenant is not in default  under the Lease after notice and beyond the
expiration of all applicable  cure periods as and to the extent  provided in the
Lease (and  provided  that  nothing  shall  imply any right of Tenant to further
notice if Landlord has previously provided such notice),  Mortgagee will neither
consent to nor cause or instruct such receiver,  trustee or other similar person
or entity  to (i)  disturb  Tenant in its  possession  of the  Demised  Premises
(except to the extent permitted under the Lease),  (ii) diminish Tenant's rights
under the Lease,  or (iii)  terminate the Lease (except to the extent  permitted
under the Lease).  Without  limiting the generality of the foregoing,  Mortgagee
will file an  objection to such  receiver,  trustee or other  similar  person or
entity  taking any of the actions  described in clauses (i) through  (iii) above
provided Tenant shall deliver  Mortgagee  notice of same and will cooperate with
Tenant in its  efforts to oppose and defeat  such  receiver,  trustee or similar
person with respect to such actions.

     (b) In the event that (i) Landlord becomes the subject of a bankruptcy case
under   the   provisions   of   the   Bankruptcy   Code,   (ii)   Landlord,   as
debtor-in-possession,  or  any  trustee  approved  in  the  bankruptcy  case  of
Landlord,  seeks an order of the  bankruptcy  court or other court of  competent
jurisdiction (the "Bankruptcy  Court"),  authorizing the rejection of the Lease,
then for so long as Tenant is not in default  under the Lease  after  notice and
beyond  the  expiration  of all  applicable  cure  periods  as and to the extent
provided in the Lease,  Mortgagee  will file an objection to such party's motion
seeking to reject the Lease;

     (c) In the event  that (i)  Landlord,  or a trustee  in  bankruptcy  of the
Landlord obtains an order of the Bankruptcy  Court  authorizing the rejection of
the Lease in accordance  with ss.365 of the Bankruptcy Code and Tenant elects to
retain its rights under the Lease in accordance with ss.365(h) of the Bankruptcy
Code, (ii) Mortgagee or any other Successor shall acquire possession and control
of the Property, and (iii) Tenant is not in default under the Lease after notice
and beyond the  expiration of all  applicable  cure periods as and to the extent
provided in the Lease (and provided that nothing shall imply any right of Tenant
to further notice if Landlord has previously provided such notice) then, in such
event, Mortgagee or such other Successor (as the case may be) shall enter into a
new lease with the Tenant on the then executory  terms of the original Lease, as
provided in this  Agreement,  if and to the extent that  Mortgagee or such other
Successor has the legal right and power to do so; and

     (d)   Mortgagee   acknowledges   and  agrees  that  (i)  if  Landlord,   as
debtor-in-possession,  or any trustee  appointed in the  bankruptcy  case of the
Landlord,  obtains an order of the Bankruptcy Court authorizing the rejection of
the Lease in  accordance  with ss.365 of the  Bankruptcy  Code,  and (ii) Tenant
elects to retain its rights under the Lease in accordance  with ss.365(h) of the
Bankruptcy  Code, (x) the provisions of this Agreement  shall continue to remain
in full force and effect,  and (y) Tenant shall have all of Tenant's  rights and
remedies provided under the Lease, including,  without limitation, such right as
may be provided in the Lease to offset against any and all rents due and payable
by Tenant under the Lease,  or under any new lease entered into pursuant to this
Agreement,  any  damages  occurring  after the date of  rejection  caused by the
non-performance  of any  obligation of Landlord under the Lease or any new lease
entered into pursuant to this  Agreement.  Tenant's right of offset provided for
in this  paragraph (d) shall survive any transfer of the Property in foreclosure
or by deed in lieu of foreclosure and shall be binding upon Landlord,  Mortgagee
or any other Successor.

                                      M-7


     8.  Provided  Tenant is not in  default  under the Lease  after  notice and
beyond the expiration of applicable  cure periods as and to the extent  provided
in the Lease  (and  provided  that  nothing  shall  imply any right of Tenant to
further  notice if Landlord has  previously  provided such notice) and the Lease
has not  been  cancelled  or  terminated,  Mortgagee  agrees  that in the  event
Landlord  shall  become the  subject of a case under the  Bankruptcy  Code,  (a)
Mortgagee  shall consent to the use of cash  collateral (as such term is defined
in Section 363(a) of the Bankruptcy Code) for the performance of the obligations
of the Landlord under the Lease, (b) Mortgagee shall consent to the inclusion in
any cash  collateral  order or  stipulation  of an assumption by Landlord of the
Lease under ss.365 of the Bankruptcy Code (without  waiving the right of Trustee
to object to any other  provision  of any cash  collateral  order or  committing
Trustee to agree to any other provision of a cash collateral  stipulation),  (c)
Mortgagee  will file and pursue an objection to any rejection by Landlord of the
Lease,  and (d) Mortgagee will file and pursue an objection to the  confirmation
of any plan of reorganization of Landlord that provides for the rejection of the
Lease. The provisions of this Paragraph 8 shall be of no further force or effect
from and after the effective date of a plan of  reorganization of Landlord which
has been confirmed and which provides for the assumption of the Lease.

     9. Mortgagee agrees that, provided Tenant is not then in default under this
Agreement  or the Lease after  notice and beyond the  expiration  of  applicable
grace periods as and to the extent  provided  under the Lease (and provided that
nothing  shall  imply  any right of Tenant to  further  notice if  Landlord  has
previously  provided  such notice),  with respect to any sublease  (other than a
sublease to an  affiliate of Tenant  pursuant to Sections  5.01(c) or (e) of the
Lease or otherwise)  and which (a) is not for less than 20,000  rentable  square
feet of Office Space,  (b) consists of either (x) not less than 100,000 rentable
square feet of Office Space or (y)  contiguous  space which includes the highest
or lowest floor then  comprising  the Office Space or is  contiguous  to another
floor  substantially  all of which has been sublet by Tenant and with respect to
which  Mortgagee  has executed and  delivered  one or more  non-disturbance  and
attornment agreements hereunder with respect to substantially all of such floor,
(c)  provides  for a rental  which,  after  taking  into  account  any free rent
periods,  credits,  offsets or deductions to which the subtenant may be entitled
thereunder,  is equal to or in excess (on a per  rentable  square foot basis) of
the Fixed Rent and  recurring  Additional  Charges (as such terms and defined in
the  Lease)  payable by Tenant  under the Lease with  respect to such space from
time to time  throughout  the term of the Lease  (or if less (on a per  rentable
square foot basis) than the Fixed Rent and recurring  Additional Charges payable
by Tenant under the Lease, if such subtenant agrees, in the  non-disturbance and
attornment   agreement   hereinafter   referred   to,   that  such  rental  will
automatically  and  without  condition  become  so  equal,  if,  as and when the
attornment provided for in such non-disturbance and attornment agreement becomes
effective between  Mortgagee and the subtenant  following the termination of the
Lease), (d) consists of space that will be demised separately from the remainder
of the  Premises in  accordance  with all  applicable  laws and (e) provides for
other  obligations  of the  subtenant  at least  substantially  identical to the
obligations  of  Tenant  under  the  Lease  (but in  compliance,  to the  extent
applicable,  with  Section  8.24 of the  Lease),  Mortgagee  shall,  at Tenant's
request,  execute and deliver to such subtenant a non-disturbance and attornment
agreement  substantially  in the form  attached to this  Agreement  as Exhibit B
provided  and upon  condition  that (i)  Tenant  has  furnished  to  Mortgagee's
reasonably  satisfactory  evidence  that the  subtenant  has a  financial  worth
sufficient to timely  fulfill its  obligations  under such sublease as a primary
tenant  (and not as a  subtenant),  including  any  increase  in such  financial
obligations  which may become effective as provided above,  (ii) the sublease is
in a form reasonably satisfactory to Mortgagee, and (iii) the subtenant executes
and delivers to Landlord such  non-disturbance  and  attornment  agreement.  Any
dispute as to the  creditworthiness of a prospective  subtenant may be submitted
to  determination  by arbitration in the manner  provided in Section 8.09 of the
Lease  as if  such  provisions  were  set  forth  herein  and  "Mortgagee"  were
substituted for "Landlord" therein,  and any such determination shall be binding


                                      M-8


upon Mortgagee and Tenant. Notwithstanding anything to the contrary set forth in
this  paragraph 9, any  non-disturbance  and attornment  agreement  delivered by
Mortgagee  pursuant to this  paragraph 9 shall be  conditional  and by its terms
expressly  contain the condition  such that, in the event of any  termination of
the Lease  other  than by  reason  of  Tenant's  default  (e.g.,  by reason of a
casualty),  then any  non-disturbance  and  attornment  agreement to a subtenant
shall, automatically and without further act of the parties, terminate and be of
no  further  force or effect  from and after the  applicable  termination  date;
provided,  that if (A) the Lease is terminated  with respect to less than all of
the Demised Premises, or (B) Tenant pursuant to Article 9 of the Lease exercises
the Renewal  Option (as defined  therein)  with  respect to less than all of the
Demised  Premises,  only  such  non-disturbance  and  attornment  agreements  to
subtenants  who  sublease  any of such space with  respect to which the Lease is
terminated or not renewed,  as the case may be, shall  automatically and without
further act of the parties,  terminate and be of no further force or effect from
and after the applicable  termination date or the day preceding the commencement
of the Renewal  Term,  as the case may be. In  addition,  to the extent any such
non-disturbance  and  attornment  agreement  relates to a  subtenant  which is a
partnership,  such  agreement  shall  provide that no provision of such sublease
providing  in  substance  for the  exculpation  from  personal  liability of the
partners  of such  partnership  shall  be  binding  on  Mortgagee  or any  other
Successor  unless such subtenant  shall, on the date the attornment  provided in
such   non-disturbance  and  attornment   agreement  becomes  effective  between
Mortgagee and such  subtenant,  post with  Mortgagee or such other  Successor as
security for such subtenant's  obligations under its sublease,  cash or a clean,
unconditional  and  irrevocable  letter  of  credit  (in  form  and  from a bank
reasonably  satisfactory  to Mortgagee) in either case in an amount equal to the
annual  fixed  rent and  recurring  charges  (without  regard to any  abatement,
credits or offsets)  payable at such time (such  security to be  increased  from
time to time to reflect  increases in such fixed rent and recurring  charges) by
such subtenant to Mortgagee, unless such cash or letter of credit was previously
delivered to Landlord in accordance with the provisions of the Lease.

     10. Tenant shall deliver to Mortgagee copies of all notices under the Lease
concurrent  with  delivery  to or  receipt  from  Landlord  (including,  without
limitation,  default  notices,  notices  establishing  delivery and commencement
dates and notices  commencing  arbitration  proceedings  but  excluding  routine
operational notices such as requests for overtime services).  No notice shall be
effective as to Mortgagee  unless  properly  served upon Mortgagee in the manner
provided herein.

                                      M-9


     11. This  Agreement  may not be modified  except by an agreement in writing
signed by Tenant and Mortgagee or their  respective  successors in interest.  In
addition,  any  modification  of this  Agreement  which would  adversely  affect
Landlord shall require the consent of Landlord.  This  Agreement  shall inure to
the benefit of and be binding upon the parties hereto,  their respective  heirs,
representatives,  successors and assigns  including,  without  limitation,  with
respect to Mortgagee, the grantee under a deed in lieu of foreclosure and/or the
purchaser of the Demised  Premises at a  foreclosure  sale or at any sale of the
Demised  Premises  following  the granting of a deed in lieu of  foreclosure  or
following foreclosure.

     12. Nothing  contained in this Agreement  shall in any way impair or affect
the lien created by the Mortgage except as specifically set forth herein.

     13. Landlord,  Tenant and Mortgagee agree that this Agreement satisfies any
condition  or   requirement   in  the  Lease  relating  to  the  granting  of  a
non-disturbance agreement by Mortgagee.  Mortgagee and Tenant further agree that
in the event there is any inconsistency  between the terms and provisions hereof
and the terms  and  provisions  of the Lease  dealing  with  non-disturbance  by
Mortgagee or the  provisions of the Mortgage  referred to in Section  6.01(b) of
the Lease (as they relate to  Tenant's  rights and  obligations),  the terms and
provisions hereof shall be controlling.

     14. All notices, demands,  consents,  approvals,  advices, waivers or other
communications  (each,  a  "Notice")  which may or are  required  to be given by
either party to the other under this Agreement  shall be in writing and,  unless
otherwise required by law, shall be sent (a) by hand, (b) by United States Mail,
certified or registered,  postage prepaid,  return receipt requested or (c) by a
nationally-recognized  overnight carrier, in each case addressed to the party to
be notified at the address for such party  specified  in the first  paragraph of
this  Agreement  (in the case of any Notice to Tenant,  to the  attention of the
Vice President,  Facilities,  and in the case of any Notice to Mortgagee, to the
attention  of John S.  Hiott,  Vice  President),  or to such other  place in the
continental  United  States  as the party to be  notified  may from time to time
designate by at least 20 days' notice to the notifying  party (with copy, in the
case of each Notice to Mortgagee, to Kelley Drye & Warren, 101 Park Avenue, 30th
floor, New York, New York 10178, Attention:  David Retter, Esq., and in the case
of each  Notice to Tenant,  to the  attention  of the  General  Counsel,  at the
address for Tenant  specified in the first  paragraph of this  Agreement).  Each
Notice  shall be deemed to have been given on the date such  Notice is  actually
received as evidenced by a written receipt therefor, and in the event of failure
to deliver by reason of changed  address of which no Notice was given or refusal
to accept delivery, as of the date of such failure.  Tenant shall also deliver a
copy of any Notice  provided to  Mortgagee  under  paragraphs  5 and 6 hereof to
Landlord  at the  address  and in the manner  provided  in the Lease,  excluding
Notices  which Tenant shall  previously  or  concurrently  have  delivered to or
received from Landlord.

     15.  Notwithstanding  anything to the  contrary  contained  herein,  Tenant
acknowledges  and agrees that the  provisions  of paragraph  (3)(c) set forth in
Section  6.01(b) of the Lease shall be  effective  and run to the benefit of any
Successor,  including  Mortgagee.   Notwithstanding  anything  to  the  contrary
contained  herein,  Mortgagee  acknowledges  and agrees that the  provisions  of
paragraph  (3)(d) set forth in Section 6.01(b) of the Lease shall be deemed null
and void and of no effect as against Tenant.

     16. This Agreement  shall be governed by the laws of the State of New York.
If any term of this  Agreement  or the  application  thereof  to any  person  or
circumstances shall to any extent be invalid or unenforceable,  the remainder of
this Agreement or the  application  of such term to any person or  circumstances
other  than  those as to which  it is  invalid  or  unenforceable  shall  not be
affected thereby, and each term of this Agreement shall be valid and enforceable
to the fullest  extent  permitted by law. This  Agreement may be executed in any
number of counterparts, each of which when executed and delivered will be deemed
to be an original and all of which taken together,  will be deemed to be one and
the same instrument.


                                      M-10


     IN WITNESS WHEREOF,  the parties hereto have hereunto caused this Agreement
to be duly executed as of the day and year first above written.

                                         Mortgagee

                      NATIONSBANK OF TENNESSEE, N.A.


                      By:___________________________
                         Name:
                         Title:



                     Tenant

                     THE EQUITABLE LIFE ASSURANCE SOCIETY OF THE UNITED STATES


                         By:____________________________
                            Name:
                            Title:


                                   Landlord

                                   1290 ASSOCIATES
                                   By:      O&Y Management Corp., As Agent


                                            By:____________________________
                                                     Name:
                                                     Title:


                                      M-11



STATE OF                            )
                                    ) ss.:
COUNTY OF                           )

     On  this  ____  day  of  __________,   1995,   before  me  personally  came
____________________________________  to me known,  who being by me duly  sworn,
did  say  that  he   resides  at   _____________________________,   that  he  is
_____________________  of  NationsBank  of  Tennessee,   N.A.,  the  corporation
described in and which  executed the foregoing  instrument as Mortgagee by order
of the board of  directors  of said  corporation;  and that he  signed  his name
thereto be like order.


                                        ----------------------------
                                        Notary Public




STATE OF                            )
                                    ) ss.:
COUNTY OF                           )


     On  this  ____  day  of  __________,   1995,   before  me  personally  came
_____________________________  to me known,  who being by me duly sworn, did say
that he  resides  at  ___________  _____________________________  that  (s)he is
_____________________________  of The Equitable  Life  Assurance  Society of the
United  States,  the  corporation  described in and which executed the foregoing
instrument as Tenant by order of the board of directors of said corporation; and
that (s)he signed his name thereto be like order.



                                  ----------------------------
                                  Notary Public





STATE OF                            )
                                    ) ss.:
COUNTY OF                           )


     On  this  ____  day  of  __________,   1995,   before  me  personally  came
_____________________________  to me known,  who being by me duly sworn, did say
that he  resides  at  ___________  _____________________________  that  (s)he is
_____________________________ of O&Y Management Corp., the corporation described
in and which executed the foregoing  instrument as Agent for 1290  Associates by
order of the board of directors of said  corporation;  and that (s)he signed his
name thereto be like order.



                                  ----------------------------
                                  Notary Public


                                      M-12


                            EXHIBIT B - to Exhibit M

                                FORM OF SUBTENANT
                                 NON-DISTURBANCE
                            AND ATTORNMENT AGREEMENT

     THIS  AGREEMENT,  made as of the _______ day of  ___________,  _____ by and
between NATIONSBANK OF TENNESSEE,  N.A., a national banking corporation,  having
an  office  at  1301  Gervais  Street,   Columbia,   South  Carolina  29201  (1)
(hereinafter called "Mortgagee"), ______________, a _________________, having an
office at ___________________________________  (hereinafter called "Subtenant"),
and THE  EQUITABLE  LIFE  ASSURANCE  SOCIETY  OF THE UNITED  STATES,  a New York
corporation,  having an office at 787 Seventh  Avenue,  New York, New York 10019
(hereinafter called "Tenant").

                              W I T N E S S E T H:

     WHEREAS,  Mortgagee is the trustee under that certain Mortgage Spreader and
Consolidation  Agreement and Trust Indenture dated March 20, 1984 (said Mortgage
Spreader  and  Consolidation  Agreement  and Trust  Indenture,  as  amended  and
supplemented  and  as  it  may  be  amended,   increased,   renewed,   modified,
consolidated,   replaced,  combined,  substituted,  severed,  split,  spread  or
extended, being hereinafter referred to as the "Mortgage") between Manufacturers
Hanover Trust Company,  predecessor-in-interest  to Mortgagee,  as trustee,  and
certain mortgagors described therein which was recorded on March 20, 1984 in the
Office of the City  Register,  New York County in Reel 775, Page 1097, and which
encumbers,  among other  properties,  the land and the building  located at 1290
Avenue of the Americas, New York, New York (the "Property"),

     WHEREAS,  Tenant has entered into a certain  agreement of lease dated as of
July __, 1995 (the "Overlease") covering, inter alia, __________________________
(the "Sublet Premises") in the building forming a part of the Property,

     WHEREAS,  Subtenant has entered into a certain  agreement of sublease dated
as of ___________, ____ with Tenant (the "Sublease") covering Sublet Premises,

     NOW, THEREFORE,  in consideration of the mutual agreements herein contained
and other good and valuable consideration,  the receipt and sufficiency of which
is hereby acknowledged, the parties hereto agree as follows:

     1. Subtenant covenants and agrees that the Sublease now is and shall at all
times  continue to be subject and  subordinate  in each and every respect to the
Mortgage.  Subtenant, upon request, shall execute and deliver any certificate or
other  instrument  which the  Mortgagee may  reasonably  request to confirm said
subordination by Subtenant.

     2.  Subtenant  certifies  that (i) Subtenant is the owner and holder of the
Subtenant's interest under the Sublease,  (ii) the Sublease is presently in full
force and effect and unmodified,  (iii) no rent or additional rent payable under
the  Sublease  has been paid more than one (1) month in advance of its due date,
(iv) no  default  exists  under the  Sublease,  and (v) there are no  offsets or
defenses as of the date hereof to the payment of the rents,  additional rents or
other sums payable under the Sublease.

     (1)  If the  identity  of the  Trustee  changes,  this  agreement  must  be
appropriately modified.

                                      M-13


     3. As long as no default  exists  under the  Sublease  which has  continued
after notice and beyond the expiration of any applicable  grace period as and to
the extent  provided in the Sublease  (and provided that nothing shall imply any
right of  Subtenant  to further  notice if Tenant or the  Landlord  (as  defined
below) has  previously  provided  such notice) and subject to the  provisions of
paragraph 5 below,  Mortgagee  shall not name Subtenant as a party  defendant to
any action for foreclosure or other enforcement of the Mortgage (unless required
by law),  nor shall the Sublease be terminated by Mortgagee in connection  with,
or by reason of,  foreclosure or other  proceedings  for the  enforcement of the
Mortgage,  or by reason  of a  transfer  of the  landlord's  interest  under the
Overlease  pursuant to the taking of a deed in lieu of  foreclosure  (or similar
device),  nor shall  Subtenant's  use or  possession  of the Sublet  Premises be
interfered  with by  Mortgagee,  unless  the  Tenant or 1290  Associates  or any
successor  owner of the Property (the  "Landlord")  would have had such right if
the  Mortgage  had not  been  granted,  except  that  the  person  acquiring  or
succeeding by or through  Mortgagee to the  interests of the Landlord  under the
Overlease  as a result of any such  action or  proceeding  (including  Mortgagee
should it acquire or succeed to such  interests),  and such person's  successors
and  assigns  (any  of  the  foregoing  being  hereinafter  referred  to as  the
"Successor"), shall not be:

     (a) subject to any credits,  offsets,  defenses or claims  which  Subtenant
might have against any prior sublessor or landlord; nor

     (b) bound by any rent or additional  rent which  Subtenant  might have paid
for more than one month in advance to any prior  sublessor or  landlord,  unless
such prepayment shall have been made with Mortgagee's prior written consent; nor

     (c) liable for any act or omission of any prior sublessor or landlord; nor

     (d) bound by any covenant to undertake or complete any  improvement  to the
Sublet Premises or the building forming a part of the Property; nor

     (e)  required to account for any security  deposit  other than any security
deposit actually delivered to the Successor; nor

     (f) liable for any payment to Tenant of any sums, or the granting to Tenant
of any credit,  in the nature of a  contribution  towards the cost of preparing,
furnishing or moving into the Demised Premises or any portion thereof; nor

     (g) bound by any modification of the Sublease which results in the Sublease
no  longer  conforming  to the  parameters  set forth in the  Overlease  for the
granting by Landlord of a non-disturbance  agreement to a subtenant made without
the written consent of Mortgagee.

     4. If the interest of the Landlord in the Property  shall be transferred by
reason of foreclosure or other  proceedings  for  enforcement of the Mortgage or
pursuant to a taking of a deed in lieu of  foreclosure  (or similar  device) and
the Overlease  shall have  previously  terminated  (and the Sublease  shall have
become  a  direct  lease   between   Subtenant   and  Landlord   pursuant  to  a
non-disturbance  and  attornment  agreement  between  such  parties) or shall be
terminated concurrent with or subsequent to such foreclosure,  other enforcement
proceeding  or taking,  then  subject to the  provisions  of  paragraph 5 below,
Subtenant  shall be bound to the  Successor,  and,  except as  provided  in this
Agreement,  the Successor  shall be bound to Subtenant,  under all of the terms,
covenants  and  conditions  of the  Sublease for the balance of the term thereof
remaining,  with the same force and effect as if the  Successor  were the Tenant
under  the  Sublease,  and  Subtenant  does  hereby  (i)  agree to attorn to the
Successor,  including  Mortgagee if it be the Successor,  as its landlord,  (ii)
affirm  its  obligations  under  the  Sublease  (subject  to the  provisions  of
paragraph 5 below),  and (iii) agree to make  payments of all sums due under the
Sublease (as same may be adjusted pursuant to the terms of paragraph 5 below) to
the Successor,  said  attornment,  affirmation and agreement to be effective and
self-operative  without  the  execution  of any  further  instruments,  upon the
Successor succeeding to the interest of the Tenant under the Sublease,  provided
that if the Successor requests,  without implying any obligation to do so on the
Successor's part,  Subtenant will confirm the attornment described herein to the
Successor in writing.  Subtenant waives the provisions of any statute or rule of
law now or  hereafter in effect that may give or purport to give it any right or
election  to  terminate  or  otherwise  adversely  affect  the  Sublease  or the
obligations  of Subtenant  thereunder  by reason of any  foreclosure  of similar
proceeding.

                                    M-14


     5. (a)  Subtenant  agrees that to the extent the  Sublease  provides  for a
rental which, after taking into account any free rent periods,  credits, offsets
or deductions to which the Subtenant may be entitled  thereunder,  is less (on a
per  rentable  square foot basis) than the Fixed Rent and  recurring  Additional
Charges (as such terms are defined in the Overlease) payable by Tenant under the
Overlease with respect to the Sublet Premises (the  "Overlease  Rent") from time
to time  throughout the term of the Sublease,  Subtenant  agrees that the rental
payable under the Sublease will automatically and without condition become equal
to the  Overlease  Rent,  if, as and when the  attornment  provided  for  herein
becomes  effective  between  Mortgagee or any other Successor and the Subtenant.
Subtenant  further  agrees that the Sublease  shall at all times comply with the
provisions of Section 8.24 of the Overlease.

     [(b) In  addition,  Subtenant  agrees  that no  provision  of the  Sublease
providing  in  substance  for the  exculpation  from  personal  liability of the
partners  of  Subtenant  shall be binding on  Mortgagee  or any other  Successor
unless  Subtenant  shall,  on the date the  attornment  provided  herein becomes
effective  between  Mortgagee or any other  Successor and  Subtenant,  post with
Mortgagee or such Successor as security for  Subtenant's  obligations  under the
Sublease,  cash or a clean,  unconditional and irrevocable  letter of credit (in


                                    M-15


form and from a bank reasonably  satisfactory to Mortgagee or such Successor) in
either case in an amount  equal to the annual fixed rent and  recurring  charges
(without  regard to any  abatements,  credits or  offsets)  payable at such time
(such  security to be increased  from time to time to reflect  increases in such
fixed rent and  recurring  charges)  by  Subtenant  to  Mortgagee  or such other
Successor as same may be modified in accordance  with the terms of paragraph (a)
above, unless such cash or letter of credit was previously delivered to Landlord
in accordance with the provisions of the Overlease.]2

     (c)  Notwithstanding  anything to the contrary set forth in this Agreement,
the  agreements  of the  Mortgagee  hereunder (on behalf of itself and any other
Successor)  shall be effective only in the event the cause of termination of the
Overlease is the default of Tenant thereunder and if the Overlease is cancelled,
terminated or expires (in whole or in part but  including  the Sublet  Premises)
for any other  reason  (e.g.,  by reason of a casualty  or  condemnation  or the
exercise by Tenant of any termination or  cancellation  right or remedy provided
in the  Overlease,  at law or in  equity or by reason  of  Tenant's  failure  to
exercise the Renewal Option (as defined in the Overlease)),  then this Agreement
shall, automatically and without further act of the parties, terminate and be of
no further force or effect from and after the applicable termination date of the
Overlease  (or portion  thereof) or the day preceding  the  commencement  of the
Renewal Term (as defined in the Overlease), as the case may be.

     6. In the event the Overlease is terminated and Subtenant  becomes a direct
tenant of Landlord  pursuant to the terms of a  non-disturbance  and  attornment
agreement between such parties,  Subtenant shall notify Mortgagee of any default
by Landlord  under the  Sublease  which would  entitle  Subtenant  to cancel the
Sublease or abate the rents,  additional rents or other sums payable  thereunder
or to exercise any self-help or set-off rights thereunder.  If Landlord fails to
cure any default as to which  Subtenant is obligated to give notice  pursuant to
the preceding  sentence within the time provided for in the Sublease,  Subtenant
shall provide  Mortgagee notice of such occurrence and Mortgagee shall then have
an  additional  30 days after  receipt of such notice  within which to cure such
default  or if such  default  cannot  be  cured  within  that  time,  then  such
additional  time as may be necessary  if, within such 30 days,  Mortgagee  shall
give  Subtenant  notice of its  intention  to  diligently  pursue  the  remedies
necessary to cure such default (including,  without limitation,  commencement of
foreclosure  proceedings  or eviction  proceedings  if  necessary to effect such
cure) and  thereafter  does  diligently  pursue such remedies and cure, in which
event the Sublease shall not be terminated and Subtenant  shall not exercise any
other rights or remedies under the Sublease or otherwise while such remedies are
being so diligently pursued by Mortgagee,  other than Subtenant's right, subject
to Section 8.24 of the Overlease, to (a) any abatement, deduction,  counterclaim
or setoff of any rent or additional rent expressly set forth in the Sublease, or
(b) self-help in accordance with the express provisions of the Sublease,  or (c)
terminate the Sublease in accordance  with the provisions  thereof in connection
with a casualty or  condemnation  affecting the Sublet Premises or the Property.
For purposes hereof,  the term Sublease shall include any successor direct lease
between Subtenant and Landlord.

     2 To be deleted if Subtenant is not a partnership.

                                    M-16


     7. This  Agreement  may not be modified  except by an  agreement in writing
signed by the parties or their respective successors in interest. This Agreement
shall inure to the  benefit of and be binding  upon the  parties  hereto,  their
respective heirs, representatives, successors and assigns.

     8. Nothing  contained in this  Agreement  shall in any way impair or affect
the lien created by the Mortgage except as specifically set forth herein.

     9. Subtenant  agrees that in the event there is any  inconsistency  between
the terms and  provisions  hereof and the terms and  provisions  of the Sublease
dealing with  non-disturbance  by Mortgagee  or the  provisions  of the Mortgage
referred to in Section  6.01(b) of the Lease (as they relate to Tenant's  rights
and obligations), the terms and provisions hereof shall be controlling.

     10. All notices,  demands or requests made pursuant to, under, or by virtue
of the  Sublease  or this  Agreement  must be in writing and mailed to the party
whom the  notice,  demand or request is being made by  certified  or  registered
mail, return receipt  requested,  at its address set forth above (in the case of
any Notice to Mortgagee, to the attention of John S. Hiott, Vice President). Any
party may change the place that  notices  and  demands are to be sent by written
notice delivered in accordance with this Agreement.

     11.  Notwithstanding  anything to the contrary contained herein,  Subtenant
acknowledges  and agrees that the  provisions  of paragraph  (3)(c) set forth in
Section  6.01(b)  of the Lease  shall be  effective  and run to the  benefit  of
Mortgagee or any other Successor.

     12. This Agreement  shall be governed by the laws of the State of New York.
If any term of this  Agreement  or the  application  thereof  to any  person  or
circumstances shall to any extent be invalid or unenforceable,  the remainder of
this Agreement or the  application  of such term to any person or  circumstances
other  than  those as to which  it is  invalid  or  unenforceable  shall  not be
affected thereby, and each term of this Agreement shall be valid and enforceable
to the fullest  extent  permitted by law. This  Agreement may be executed in any
number of counterparts, each of which when executed and delivered will be deemed
to be an original and all of which taken together,  will be deemed to be one and
the same instrument.

     13. Tenant is executing this  Agreement for the purpose of confirming  that
this  Agreement  satisfies any condition or  requirement in the Overlease or the
Subordination, Non-Disturbance and Attornment Agreement dated ____________, 1995
between  Tenant and  Mortgagee  relating to the  granting  of a  non-disturbance
agreement by Mortgagee to a subtenant of Tenant.

                                      M-17




     IN WITNESS WHEREOF,  the parties hereto have hereunto caused this Agreement
to be duly executed as of the day and year first above written.

                 Mortgagee
                                  NATIONSBANK OF TENNESSEE, N.A.


                                  By:_______________________________
                                     Name:
                                     Title:



                 Subtenant

                                  [--------------------------------]


                                  By:_______________________________
                                     Name:
                                     Title:



                                     Tenant

                    THE EQUITABLE LIFE ASSURANCE SOCIETY OF THE UNITED STATES


                    By:_______________________________
                       Name:
                       Title:


                               [ADD NOTARY FORMS]

     1  If  the  identity  of  the  Trustee  changes,  this  agreement  must  be
appropriately modified.

                                    M-18



                                    EXHIBIT N

                 [INTENTIONALLY OMITTED FROM ORIGINAL DOCUMENT]

                                      N-1


                                    EXHIBIT O

                           FORM OF NON-DISTURBANCE AND
                   ATTORNMENT AGREEMENT FOR SUPERIOR MORTGAGES

     THIS  AGREEMENT,  made as of the  _______ day of  __________,  _____ by and
between  __________________________,  a  _________________,  having an office at
________________________________ (hereinafter called "Mortgagee"), THE EQUITABLE
LIFE ASSURANCE SOCIETY OF THE UNITED STATES, a New York  corporation,  having an
office at 787  Seventh  Avenue,  New York,  New York 10019  (hereinafter  called
"Tenant")  and 1290  ASSOCIATES,  a New York  partnership  having an office  c/o
Olympia and York Companies (U.S.A.), 237 Park Avenue, New York, New York 10019.

                              W I T N E S S E T H:

     WHEREAS,  Mortgagee is the ______  under that certain  ____________________
______________________________________  (the "Mortgage") between  ______________
___________________________________,   as  lender,  and   ________________,   as
borrower,  which  was  recorded  on  ________,  ____ in the  Office  of the City
Register,  New York County in Reel ___, Page ____, and which  encumbers the land
and the building located at 1290 Avenue of the Americas, New York, New York (the
"Property") and more particularly described on Exhibit A annexed hereto,

     WHEREAS,  Tenant and 1290 Associates (together with any successor holder of
the Landlord's  interest under the Lease,  being hereinafter  called "Landlord")
have entered into a certain  agreement of lease dated as of July ___,  1995 (the
"Lease")  initially  covering the  eleventh  through  twenty-second  floors (the
"Demised Premises") in the building forming a part of the Property,

     NOW, THEREFORE,  in consideration of the mutual agreements herein contained
and other good and valuable consideration,  the receipt and sufficiency of which
is hereby acknowledged, the parties hereto agree as follows:

     1. Tenant covenants and agrees that the Lease now is and shall at all times
continue to be subordinate to the Mortgage.  Tenant, upon request, shall execute
and  deliver  any  certificate  or other  instrument  which  the  Mortgagee  may
reasonably request to confirm said subordination by Tenant.

     2. Tenant certifies that (i) Tenant is the owner and holder of the Tenant's
interest  under the Lease,  (ii) the Lease is presently in full force and effect
and  unmodified,  (iii) no rent or  additional  rent payable under the Lease has
been paid more than one (1) month in advance of its due date (it being expressly
agreed that any rent abatements,  set-offs or deductions  expressly provided for
in the Lease shall not be deemed an advance  payment of rent or additional  rent
under this Agreement), (iv) no default exists under the Lease, and (v) there are
no  offsets  or  defenses  as of the date  hereof to the  payment  of the rents,
additional rents or other sums payable under the Lease.

                                      O-1


     3. As long as no default  exists under the Lease which has continued  after
notice and beyond the  expiration of any  applicable  grace period as and to the
extent provided in the Lease (and provided that nothing shall imply any right of
Tenant to further  notice if Landlord  has  previously  provided  such  notice),
Mortgagee  shall  not  name  Tenant  as a  party  defendant  to any  action  for
foreclosure or other  enforcement of the Mortgage  (unless required by law), nor
shall the Lease be terminated by Mortgagee in connection  with, or by reason of,
foreclosure or other  proceedings  for the  enforcement  of the Mortgage,  or by
reason of a transfer of the Landlord's  interest under the Lease pursuant to the
taking  of a deed  in  lieu  of  foreclosure  (or  similar  device)  whether  in
connection with a bankruptcy proceeding or otherwise,  nor shall Tenant's use or
possession of the Demised  Premises be interfered  with by Mortgagee  (except to
the extent  permitted  under the Lease),  except that the person  acquiring,  or
succeeding  to, the interests of the Landlord in the Property as a result of any
such action or proceeding or taking of a deed in lieu of foreclosure (including,
without limitation, Mortgagee), and such person's successors and assigns (any of
the foregoing being hereinafter referred to as the "Successor"), shall not be:

     (a) subject to any credits,  offsets, defenses or claims which Tenant might
have against any prior Landlord, except that a Successor shall be subject to any
credits,  offsets and defenses to which  Tenant may be entitled  pursuant to the
express provisions of the Lease; nor

     (b) bound by any rent or  additional  rent which Tenant might have paid for
more than one (1) month in advance to any prior Landlord, unless such prepayment
shall have been made with Mortgagee's prior written consent; nor

     (c)  liable  for  any act or  omission  of any  prior  Landlord  except  as
expressly provided in this Agreement,  it being understood that the foregoing is
not  intended to (i) relieve a Successor of any  liability  arising by reason of
its acts or  omissions  from and after the date the  Successor  succeeds  to the
rights of the prior  Landlord,  including a  continuation  of the failure of the
prior  Landlord to perform its  obligations  under the Lease,  in which case the
Successor upon receipt of notice of such  continuation  from Tenant shall have a
reasonable  period of time to remedy same (it being  agreed that to the extent a
time  period is granted  Landlord  in the Lease for such remedy such time period
shall be deemed a reasonable period of time for purposes of this clause (i)), or
(ii) deny Tenant the benefit of any rent offset  right,  abatement  or credit to
which Tenant is entitled  under the Lease,  subject to the express terms hereof.
Notwithstanding  the foregoing,  the Successor shall not be liable to Tenant for
any claim  Tenant may have  against a prior  Landlord  under the  provisions  of
Section 6.12 of the Lease (by way of example,  the Successor shall not be liable
for any loss or damage to Tenant caused by the negligence of a prior Landlord or
its agents, servants, employees or contractors); nor

     (d) bound by any covenant to undertake or complete any Landlord's Work with
respect to any Block of space or any Offer  Space or the Lobby  Renovation  Work
(as  such  terms  are  defined  in the  Lease);  provided  however;  that if the
Successor  shall fail to  complete  any such work,  then  Tenant  shall have the
following  rights (which shall be the sole and exclusive  remedies  available to
Tenant for such failure): (i) [OMIT IF NO LONGER APPLICABLE:  in the case of the
Successor's failure to complete the Landlord's Work with respect to any Block of
space Tenant shall,  subject to the terms hereof,  have the rights  described in
Sections 1.03 and 10.01 of the Lease,  (ii)] in the case of Successor's  failure
to complete the  Landlord's  Work with respect to any Offer Space Tenant  shall,
subject to the terms  hereof,  have the rights  described  in Sections  1.06 and
10.01 of the  Lease  [OMIT IF NO  LONGER  APPLICABLE:  and  (iii) in the case of
Successor's failure to complete the Lobby Renovation Work Tenant shall,  subject
to the terms hereof, have the rights described in Section 8.21(c) of the Lease.]
The Successor's failure to complete any such work shall not constitute a default
by the  Successor  under the Lease  giving  rise to any  remedies  other than as
expressly set forth in this paragraph (d); nor

                                      O-2


     (e) be required to account for any security deposit other than any security
deposit actually delivered to the Successor; nor

     (f) liable for any payment to Tenant of any sums or the  granting to Tenant
of any credit in the nature of a  contribution  towards  the cost of  preparing,
furnishing  or moving into the  Demised  Premises  or any  portion  thereof,  or
otherwise  (except to the extent  provided in  paragraph  (a) above),  provided,
however,  that the Successor  shall be  responsible  to pay to Tenant any unpaid
portion of the [OMIT ANY THAT ARE NO LONGER APPLICABLE: Block A and B Allowance,
the Block C Allowance and] the Expansion Allowance (as such terms are defined in
the Lease and collectively referred to herein as "Landlord's  Contributions") as
and when the  same are due and  payable  under  the  Lease;  provided,  further,
however, that the sole and exclusive remedy available to Tenant in the event the
Successor shall fail to pay any or all of the Landlord's  Contributions shall be
to exercise the set-off  rights  described in Section 10.05 of the Lease and the
Successor's  failure to make any such payment shall not  constitute a default by
the Successor under the Lease giving rise to any remedies other than the set-off
rights expressly set forth in such Section 10.05. Notwithstanding the foregoing,
Mortgagee  shall  have the right  (but not the  obligation)  if  Landlord  shall
default in funding all or any  portion of the  Landlord's  Contributions  to pay
such amounts to Tenant; nor

     (g) bound by any modification of the Lease made without the written consent
of Mortgagee,  including without limitation any agreement by Tenant to surrender
the Lease. Mortgagee agrees not to unreasonably withhold, delay or condition its
consent to a modification of the Lease.

     4. (a) If the interest of the Landlord under the Lease shall be transferred
by reason of foreclosure or other proceedings for enforcement of the Mortgage in
which Tenant has not been named as party  defendant or pursuant to a taking of a
deed in lieu of foreclosure  (or similar  device)  whether in connection  with a
bankruptcy  proceeding  or  otherwise,  the  Lease  shall not be  terminated  or
affected  thereby but shall  continue in full force and effect as a direct lease
between the  Successor  and Tenant and Tenant  shall be bound to the  Successor,
and,  except as expressly  provided in this  Agreement,  the Successor  shall be
bound to Tenant,  under all of the terms,  covenants and conditions of the Lease
for the balance of the term thereof remaining, with the same force and effect as
if the Successor  were the Landlord,  and Tenant does hereby (i) agree to attorn
to the Successor,  including Mortgagee if it be the Successor,  as its landlord,
(ii) affirm its obligations under the Lease, and (iii) agree to make payments of
all sums due under the Lease to the Successor, said attornment,  affirmation and
agreement  to be  effective  and  self-operative  without the  execution  of any
further  instruments,  upon the  Successor  succeeding  to the  interest  of the
Landlord  under the Lease,  provided  that if the  Successor  requests,  without
implying any obligation to do so on the  Successor's  part,  Tenant will confirm
the attornment  described herein to the Successor in writing.  Tenant waives the
provisions  of any  statute or rule of law now or  hereafter  in effect that may
give or purport  to give it any right or  election  to  terminate  or  otherwise
adversely affect the Lease or the obligations of Tenant  thereunder by reason of
any foreclosure or similar proceeding.

                                      O-3


     (b) Provided the Lease has not been previously cancelled or terminated,  if
(i)  Mortgagee or any other  Successor  shall acquire title to the Property upon
foreclosure  in an action in which  Mortgagee  shall have been  required to name
Tenant as a party  defendant,  and (ii) Tenant is not in default under the Lease
after notice and beyond the expiration of all applicable  cure periods as and to
the extent  provided in the Lease (and  provided  that  nothing  shall imply any
right of Tenant to further  notice if  Landlord  has  previously  provided  such
notice),  then, in such event, Mortgagee or any other Successor (as the case may
be) shall enter into a new lease with Tenant upon the same terms and  conditions
as were contained in the Lease,  except that (x) the obligations and liabilities
of  Mortgagee or other  Successor  (as the case may be) under any such new lease
shall be  subject to the terms and  conditions  of this  Agreement,  and (y) the
expiration  date of such new lease shall  coincide with the original  expiration
date of the Lease.  Tenant shall  execute any such new lease and shall attorn to
Mortgagee or the other Successor (as the case may be) so as to establish  direct
privity  between  Mortgagee  or such  other  Successor  (as the case may be) and
Tenant.

     (c) If (i) Landlord, as debtor-in-possession, or any trustee appointed in a
bankruptcy  case  of  Landlord,   obtains  an  order  of  the  Bankruptcy  Court
authorizing  the  rejection  of the  Lease  in  accordance  with  ss.365  of the
Bankruptcy Code (as hereinafter defined), and Tenant elects to retain its rights
under the Lease in  accordance  with  ss.365(h)  of the  Bankruptcy  Code,  (ii)
Mortgagee  or any other  Successor  shall  acquire  title to the  Property  upon
foreclosure  or by the  acceptance  of a deed in lieu  thereof  or by any  other
means,  and (iii)  Tenant is not in  default  under the Lease  after  notice and
beyond  the  expiration  of all  applicable  cure  periods  as and to the extent
provided in the Lease (and provided that nothing shall imply any right of Tenant
to further notice if Landlord has previously provided such notice) then, in such
event,  Mortgagee or any other Successor (as the case may be) shall enter into a
new lease with Tenant upon the same terms and  conditions  as were  contained in
the Lease, except that (x) the obligations and liabilities of Mortgagee or other
Successor  (as the case may be) under any such new lease shall be subject to the
terms and conditions of this Agreement,  and (y) the expiration date of such new
lease shall  coincide  with the original  expiration  date of the Lease.  Tenant
shall  execute  any such new lease and shall  attorn to  Mortgagee  or the other
Successor  (as  the  case  may be) so as to  establish  direct  privity  between
Mortgagee or such other Successor (as the case may be) and Tenant.

     5. Tenant shall notify Mortgagee of any default by Landlord under the Lease
or any other  circumstance which would entitle Tenant to cancel or terminate the
Lease.  If Landlord fails to cure any default as to which Tenant is obligated to
give notice  pursuant to the preceding  sentence within the time provided for in
the  Lease (or if no such  period of time is  provided  in the  Lease,  within a
reasonable  period of time),  then  Mortgagee  shall have an  additional 30 days
after  receipt  of such  notice  within  which to cure such  default  or if such
default cannot be cured within that time,  then such  additional  time as may be
necessary  if,  within such 30 days,  Mortgagee  has commenced and is diligently
pursuing  the  remedies  necessary  to cure  such  default  (including,  without
limitation,  commencement of foreclosure proceedings or eviction proceedings, if
necessary to effect such cure), in which event the Lease shall not be terminated
and Tenant shall not  exercise  any other rights or remedies  under the Lease or
otherwise  while  such  remedies  are being so  diligently  pursued,  other than
Tenant's right to (a) any abatement,  deduction,  counterclaim  or setoff of any
rent or  additional  rent  expressly  set forth in this Lease,  (b) self-help in
accordance  with Section  10.01 or (c)  terminate  the Lease  pursuant to and in
accordance with Section 7.04 or Section 7.05 of the Lease.  Nothing herein shall
be deemed to imply that Tenant has any right to terminate the Lease or any other
right or remedy, except as may be otherwise expressly provided for in the Lease.

     6. Mortgagee agrees that, provided Tenant is not then in default under this
Agreement  or the Lease after  notice and beyond the  expiration  of  applicable
grace periods as and to the extent  provided  under the Lease (and provided that
nothing  shall  imply  any right of Tenant to  further  notice if  Landlord  has
previously  provided  such notice),  with respect to any sublease  (other than a
sublease to an  affiliate of Tenant  pursuant to Sections  5.01(c) or (e) of the
Lease or otherwise)  and which (a) is not for less than 20,000  rentable  square
feet of Office Space,  (b) consists of either (x) not less than 100,000 rentable
square feet of Office Space or (y)  contiguous  space which includes the highest
or lowest floor then  comprising  the Office Space or is  contiguous  to another
floor  substantially  all of which has been sublet by Tenant and with respect to
which  Mortgagee  has executed and  delivered  one or more  non-disturbance  and
attornment agreements hereunder with respect to substantially all of such floor,

                                      O-4



(c)  provides  for a rental  which,  after  taking  into  account  any free rent
periods,  credits,  offsets or deductions to which the subtenant may be entitled
thereunder,  is equal to or in excess (on a per  rentable  square foot basis) of
the Fixed Rent and  recurring  Additional  Charges (as such terms and defined in
the  Lease)  payable by Tenant  under the Lease with  respect to such space from
time to time  throughout  the term of the Lease  (or if less (on a per  rentable
square foot basis) than the Fixed Rent and recurring  Additional Charges payable
by Tenant under the Lease, if such subtenant agrees, in the  non-disturbance and
attornment   agreement   hereinafter   referred   to,   that  such  rental  will
automatically  and  without  condition  become  so  equal,  if,  as and when the
attornment provided for in such non-disturbance and attornment agreement becomes
effective between  Mortgagee and the subtenant  following the termination of the
Lease), (d) consists of space that will be demised separately from the remainder
of the  Premises in  accordance  with all  applicable  laws and (e) provides for
other  obligations  of the  subtenant  at least  substantially  identical to the
obligations  of  Tenant  under  the  Lease  (but in  compliance,  to the  extent
applicable,  with  Section  8.24 of the  Lease),  Mortgagee  shall,  at Tenant's
request,  execute and deliver to such subtenant a non-disturbance and attornment
agreement  substantially  in the form  attached to this  Agreement  as Exhibit B
provided  and upon  condition  that (i)  Tenant  has  furnished  to  Mortgagee's
reasonably  satisfactory  evidence  that the  subtenant  has a  financial  worth
sufficient to timely  fulfill its  obligations  under such sublease as a primary
tenant  (and not as a  subtenant),  including  any  increase  in such  financial
obligations  which may become effective as provided above,  (ii) the sublease is
in a form reasonably satisfactory to Mortgagee, and (iii) the subtenant executes
and delivers to Landlord such  non-disturbance  and  attornment  agreement.  Any
dispute as to the  creditworthiness of a prospective  subtenant may be submitted
to  determination  by arbitration in the manner  provided in Section 8.09 of the
Lease  as if  such  provisions  were  set  forth  herein  and  "Mortgagee"  were
substituted for "Landlord" therein,  and any such determination shall be binding
upon Mortgagee and Tenant. Notwithstanding anything to the contrary set forth in
this  paragraph 9, any  non-disturbance  and attornment  agreement  delivered by
Mortgagee  pursuant to this  paragraph 9 shall be  conditional  and by its terms
expressly  contain the condition  such that, in the event of any  termination of
the Lease  other  than by  reason  of  Tenant's  default  (e.g.,  by reason of a
casualty),  then any  non-disturbance  and  attornment  agreement to a subtenant
shall, automatically and without further act of the parties, terminate and be of
no  further  force or effect  from and after the  applicable  termination  date;
provided,  that if (A) the Lease is terminated  with respect to less than all of
the Demised Premises, or (B) Tenant pursuant to Article 9 of the Lease exercises
the Renewal  Option (as defined  therein)  with  respect to less than all of the
Demised  Premises,  only  such  non-disturbance  and  attornment  agreements  to
subtenants  who  sublease  any of such space with  respect to which the Lease is
terminated or not renewed,  as the case may be, shall  automatically and without
further act of the parties,  terminate and be of no further force or effect from
and after the applicable  termination date or the day preceding the commencement
of the Renewal  Term,  as the case may be. In  addition,  to the extent any such
non-disturbance  and  attornment  agreement  relates to a  subtenant  which is a
partnership,  such  agreement  shall  provide that no provision of such sublease
providing  in  substance  for the  exculpation  from  personal  liability of the
partners  of such  partnership  shall  be  binding  on  Mortgagee  or any  other
Successor  unless such subtenant  shall, on the date the attornment  provided in
such   non-disturbance  and  attornment   agreement  becomes  effective  between
Mortgagee and such subtenant,  post with Mortgagee or such other  Successor,  as
security for such subtenant's  obligations under its sublease,  cash or a clean,
unconditional  and  irrevocable  letter  of  credit  (in  form  and  from a bank
reasonably  satisfactory  to Mortgagee) in either case in an amount equal to the
annual  fixed rent and  recurring  charges  (without  regard to any  abatements,
credits or offsets)  payable by such  subtenant  to Mortgagee at such time (such
security to be  increased  from time to time to reflect  increases in such fixed
rent and recurring charges), unless such cash or letter of credit was previously
delivered to Landlord in accordance with the provisions of the Lease.

                                      O-5



     7. Tenant shall deliver to Mortgagee  copies of all notices under the Lease
concurrent  with  delivery  to or  receipt  from  Landlord  (including,  without
limitation,  default  notices,  notices  establishing  delivery and commencement
dates and notices  commencing  arbitration  proceedings  but  excluding  routine
operational notices such as requests for overtime services).  No notice shall be
effective as to Mortgagee  unless  properly  served upon Mortgagee in the manner
provided herein.

     8. This  Agreement  may not be modified  except by an  agreement in writing
signed by Tenant and Mortgagee or their  respective  successors in interest.  In
addition,  any  modification  of this  Agreement  which would  adversely  affect
Landlord shall require the consent of Landlord.  This  Agreement  shall inure to
the benefit of and be binding upon the parties hereto,  their respective  heirs,
representatives,  successors and assigns  including,  without  limitation,  with
respect to Mortgagee, the grantee under a deed in lieu of foreclosure and/or the
purchaser of the Demised  Premises at a  foreclosure  sale or at any sale of the
Demised  Premises  following  the granting of a deed in lieu of  foreclosure  or
following foreclosure.

     9. Nothing  contained in this  Agreement  shall in any way impair or affect
the lien created by the Mortgage except as specifically set forth herein.

     10. Landlord,  Tenant and Mortgagee agree that this Agreement satisfies any
condition  or   requirement   in  the  Lease  relating  to  the  granting  of  a
non-disturbance agreement by Mortgagee.  Mortgagee and Tenant further agree that
in the event there is any inconsistency  between the terms and provisions hereof
and the terms  and  provisions  of the Lease  dealing  with  non-disturbance  by
Mortgagee or the  provisions of the Mortgage  referred to in Section  6.01(b) of
the Lease (as they relate to  Tenant's  rights and  obligations),  the terms and
provisions hereof shall be controlling.

     11. All notices, demands,  consents,  approvals,  advices, waivers or other
communications  (each,  a  "Notice")  which may or are  required  to be given by
either party to the other under this Agreement  shall be in writing and,  unless
otherwise required by law, shall be sent (a) by hand, (b) by United States Mail,
certified or registered,  postage prepaid,  return receipt requested or (c) by a
nationally-recognized  overnight carrier, in each case addressed to the party to
be notified at the address for such party  specified  in the first  paragraph of
this  Agreement  (in the case of any Notice to Tenant,  to the  attention of the
Vice President,  Facilities,  and in the case of any Notice to Mortgagee, to the
attention  of  __________________),  or to such other  place in the  continental
United States as the party to be notified may from time to time  designate by at
least 20 days'  notice to the  notifying  party (with copy,  in the case of each
Notice to Mortgagee, to  ______________________________________________________,
Attention:  __________,  and in the  case  of  each  Notice  to  Tenant,  to the
attention  of the General  Counsel,  at the address for Tenant  specified in the
first  paragraph  of this  Agreement).  Each Notice shall be deemed to have been
given on the date such Notice is actually  received  as  evidenced  by a written
receipt  therefor,  and in the event of  failure to deliver by reason of changed
address of which no Notice was given or  refusal to accept  delivery,  as of the
date of such failure. Tenant shall also deliver a copy of any Notice provided to
Mortgagee under  paragraphs 5 and 6 hereof to Landlord at the address and in the
manner provided in the Lease, excluding Notices which Tenant shall previously or
concurrently have delivered to or received from Landlord.

                                      O-6



     12.  Anything  herein or in the Lease to the contrary  notwithstanding,  if
Mortgagee shall acquire title to the Property,  or shall otherwise become liable
for any  obligations  of  Landlord  under the  Lease,  Mortgagee  shall  have no
obligation,  nor incur any liability,  beyond Mortgagee's then interest, if any,
in the Property  (as such  interest is defined in Section 8.06 of the Lease) and
Tenant shall look  exclusively  to such  interest of  Mortgagee,  if any, in the
Property for the payment and discharge of any obligations imposed upon Mortgagee
hereunder  or under the  Lease.  Tenant  agrees  that with  respect to any money
judgment  that may be obtained or secured by Tenant  against  Mortgagee,  Tenant
shall look solely to the estate or interest  owned by  Mortgagee in the Property
(as such  interest is defined in Section 8.06 of the Lease) and Tenant shall not
collect  or  attempt to collect  any such  judgment  out of any other  assets of
Mortgagee.  Nothing  contained in this Section 12 shall be construed to diminish
or impair  Tenant's  abatement,  offset,  credit or  self-help  rights under the
Lease.

     13. This Agreement  shall be governed by the laws of the State of New York.
If any term of this  Agreement  or the  application  thereof  to any  person  or
circumstances shall to any extent be invalid or unenforceable,  the remainder of
this Agreement or the  application  of such term to any person or  circumstances
other  than  those as to which  it is  invalid  or  unenforceable  shall  not be
affected thereby, and each term of this Agreement shall be valid and enforceable
to the fullest  extent  permitted by law. This  Agreement may be executed in any
number of counterparts, each of which when executed and delivered will be deemed
to be an original and all of which taken together,  will be deemed to be one and
the same instrument.

     IN WITNESS WHEREOF,  the parties hereto have hereunto caused this Agreement
to be duly executed as of the day and year first above written.

                                            Mortgagee


                         By:___________________________
                            Name:
                            Title:



                      Tenant

                      THE EQUITABLE LIFE ASSURANCE SOCIETY OF THE UNITED STATES


                         By:____________________________
                            Name:
                            Title:


                          Landlord

                          1290 ASSOCIATES
                          By:      O&Y Management Corp., As Agent


                                   By:____________________________
                                      Name:
                                      Title:

                               [ADD NOTARY FORMS]

                                      O-7

                             EXHIBIT B TO EXHIBIT O

                                FORM OF SUBTENANT
                                 NON-DISTURBANCE
                            AND ATTORNMENT AGREEMENT

     THIS  AGREEMENT,  made as of the _______ day of  ___________,  _____ by and
between ____________________________,  a _________________,  having an office at
_________________________________      (hereinafter     called     "Mortgagee"),
______________,     a     _________________,     having     an     office     at
___________________________________  (hereinafter called  "Subtenant"),  and THE
EQUITABLE LIFE ASSURANCE  SOCIETY OF THE UNITED STATES, a New York  corporation,
having an office at 787 Seventh  Avenue,  New York, New York 10019  (hereinafter
called "Tenant").

                              W I T N E S S E T H:

     WHEREAS,  Mortgagee is the  ___________  under that  certain  _____________
____________________________________________________________________________
(the "Mortgage") between _________________________,  as lender, and ____________
______________,  as borrower,  which was recorded on  __________________  in the
Office of the City Register,  New York County in Reel ____, Page ____, and which
encumbers,  among other  properties,  the land and the building  located at 1290
Avenue of the Americas, New York, New York (the "Property"),

     WHEREAS,  Tenant has entered into a certain  agreement of lease dated as of
July 20, 1995 (the "Overlease") covering, inter alia, __________________________
(the "Sublet Premises") in the building forming a part of the Property,

     WHEREAS,  Subtenant has entered into a certain  agreement of sublease dated
as of ___________, ____ with Tenant (the "Sublease") covering Sublet Premises,

     NOW, THEREFORE,  in consideration of the mutual agreements herein contained
and other good and valuable consideration,  the receipt and sufficiency of which
is hereby acknowledged, the parties hereto agree as follows:

     1. Subtenant covenants and agrees that the Sublease now is and shall at all
times  continue to be subject and  subordinate  in each and every respect to the
Mortgage.  Subtenant, upon request, shall execute and deliver any certificate or
other  instrument  which the  Mortgagee may  reasonably  request to confirm said
subordination by Subtenant.

     2.  Subtenant  certifies  that (i) Subtenant is the owner and holder of the
Subtenant's interest under the Sublease,  (ii) the Sublease is presently in full
force and effect and unmodified,  (iii) no rent or additional rent payable under
the  Sublease  has been paid more than one (1) month in advance of its due date,
(iv) no  default  exists  under the  Sublease,  and (v) there are no  offsets or
defenses as of the date hereof to the payment of the rents,  additional rents or
other sums payable under the Sublease.

                                      O-8


     3. As long as no default  exists  under the  Sublease  which has  continued
after notice and beyond the expiration of any applicable  grace period as and to
the extent  provided in the Sublease  (and provided that nothing shall imply any
right of  Subtenant  to further  notice if Tenant or the  Landlord  (as  defined
below) has  previously  provided  such notice) and subject to the  provisions of
paragraph 5 below,  Mortgagee  shall not name Subtenant as a party  defendant to
any action for foreclosure or other enforcement of the Mortgage (unless required
by law),  nor shall the Sublease be terminated by Mortgagee in connection  with,
or by reason of,  foreclosure or other  proceedings  for the  enforcement of the
Mortgage,  or by reason  of a  transfer  of the  landlord's  interest  under the
Overlease  pursuant to the taking of a deed in lieu of  foreclosure  (or similar
device),  nor shall  Subtenant's  use or  possession  of the Sublet  Premises be
interfered  with by  Mortgagee,  unless  the  Tenant or 1290  Associates  or any
successor  owner of the Property (the  "Landlord")  would have had such right if
the  Mortgage  had not  been  granted,  except  that  the  person  acquiring  or
succeeding by or through  Mortgagee to the  interests of the Landlord  under the
Overlease  as a result of any such  action or  proceeding  (including  Mortgagee
should it acquire or succeed to such  interests),  and such person's  successors
and  assigns  (any  of  the  foregoing  being  hereinafter  referred  to as  the
"Successor"), shall not be:

     (a) subject to any credits,  offsets,  defenses or claims  which  Subtenant
might have against any prior sublessor or landlord; nor

     (b) bound by any rent or additional  rent which  Subtenant  might have paid
for more than one month in advance to any prior  sublessor or  landlord,  unless
such prepayment shall have been made with Mortgagee's prior written consent; nor

     (c) liable for any act or omission of any prior sublessor or landlord; nor

     (d) bound by any covenant to undertake or complete any  improvement  to the
Sublet Premises or the building forming a part of the Property; nor

     (e)  required to account for any security  deposit  other than any security
deposit actually delivered to the Successor; nor

     (f) liable for any payment to Tenant of any sums, or the granting to Tenant
of any credit,  in the nature of a  contribution  towards the cost of preparing,
furnishing or moving into the Demised Premises or any portion thereof; nor

     (g) bound by any modification of the Sublease which results in the Sublease
no  longer  conforming  to the  parameters  set forth in the  Overlease  for the
granting by Landlord of a non-disturbance  agreement to a subtenant made without
the written consent of Mortgagee.

     4. If the interest of the Landlord in the Property  shall be transferred by
reason of foreclosure or other  proceedings  for  enforcement of the Mortgage or
pursuant to a taking of a deed in lieu of  foreclosure  (or similar  device) and
the Overlease  shall have  previously  terminated  (and the Sublease  shall have
become  a  direct  lease   between   Subtenant   and  Landlord   pursuant  to  a
non-disturbance  and  attornment  agreement  between  such  parties) or shall be
terminated concurrent with or subsequent to such foreclosure,  other enforcement
proceeding  or taking,  then  subject to the  provisions  of  paragraph 5 below,
Subtenant  shall be bound to the  Successor,  and,  except as  provided  in this
Agreement,  the Successor  shall be bound to Subtenant,  under all of the terms,
covenants  and  conditions  of the  Sublease for the balance of the term thereof
remaining,  with the same force and effect as if the  Successor  were the Tenant
under  the  Sublease,  and  Subtenant  does  hereby  (i)  agree to attorn to the
Successor,  including  Mortgagee if it be the Successor,  as its landlord,  (ii)
affirm  its  obligations  under  the  Sublease  (subject  to the  provisions  of
paragraph 5 below),  and (iii) agree to make  payments of all sums due under the
Sublease (as same may be adjusted pursuant to the terms of paragraph 5 below) to
the Successor,  said  attornment,  affirmation and agreement to be effective and
self-operative  without  the  execution  of any  further  instruments,  upon the
Successor succeeding to the interest of the Tenant under the Sublease,  provided
that if the Successor requests,  without implying any obligation to do so on the
Successor's part,  Subtenant will confirm the attornment described herein to the
Successor in writing.  Subtenant waives the provisions of any statute or rule of
law now or  hereafter in effect that may give or purport to give it any right or
election  to  terminate  or  otherwise  adversely  affect  the  Sublease  or the
obligations  of Subtenant  thereunder  by reason of any  foreclosure  of similar
proceeding.

                                      0-9


     5. (a)  Subtenant  agrees that to the extent the  Sublease  provides  for a
rental which, after taking into account any free rent periods,  credits, offsets
or deductions to which the Subtenant may be entitled  thereunder,  is less (on a
per  rentable  square foot basis) than the Fixed Rent and  recurring  Additional
Charges (as such terms are defined in the Overlease) payable by Tenant under the
Overlease with respect to the Sublet Premises (the  "Overlease  Rent") from time
to time  throughout the term of the Sublease,  Subtenant  agrees that the rental
payable under the Sublease will automatically and without condition become equal
to the  Overlease  Rent,  if, as and when the  attornment  provided  for  herein
becomes  effective  between  Mortgagee or any other Successor and the Subtenant.
Subtenant  further  agrees that the Sublease  shall at all times comply with the
provisions of Section 8.24 of the Overlease.

     [(b) In  addition,  Subtenant  agrees  that no  provision  of the  Sublease
providing  in  substance  for the  exculpation  from  personal  liability of the
partners  of  Subtenant  shall be binding on  Mortgagee  or any other  Successor
unless  Subtenant  shall,  on the date the  attornment  provided  herein becomes
effective  between  Mortgagee or any other  Successor and  Subtenant,  post with
Mortgagee or such Successor as security for  Subtenant's  obligations  under the
Sublease,  cash or a clean,  unconditional and irrevocable  letter of credit (in
form and from a bank reasonably  satisfactory to Mortgagee or such Successor) in
either case in an amount  equal to the annual fixed rent and  recurring  charges
(without  regard to any  abatements,  credits or  offsets)  payable at such time
(such  security to be increased  from time to time to reflect  increases in such
fixed rent and  recurring  charges)  by  Subtenant  to  Mortgagee  or such other
Successor as same may be modified in accordance  with the terms of paragraph (a)
above, unless such cash or letter of credit was previously delivered to Landlord
in accordance with the provisions of the Overlease.]1

     (c)  Notwithstanding  anything to the contrary set forth in this Agreement,
the  agreements  of the  Mortgagee  hereunder (on behalf of itself and any other
Successor)  shall be effective only in the event the cause of termination of the
Overlease is the default of Tenant thereunder and if the Overlease is cancelled,
terminated or expires (in whole or in part but  including  the Sublet  Premises)
for any other  reason  (e.g.,  by reason of a casualty  or  condemnation  or the
exercise by Tenant of any termination or  cancellation  right or remedy provided
in the  Overlease,  at law or in  equity or by reason  of  Tenant's  failure  to
exercise the Renewal Option (as defined in the Overlease)),  then this Agreement
shall, automatically and without further act of the parties, terminate and be of
no further force or effect from and after the applicable termination date of the
Overlease  (or portion  thereof) or the day preceding  the  commencement  of the
Renewal Term (as defined in the Overlease), as the case may be.

     6. In the event the Overlease is terminated and Subtenant  becomes a direct
tenant of Landlord  pursuant to the terms of a  non-disturbance  and  attornment
agreement between such parties,  Subtenant shall notify Mortgagee of any default
by Landlord  under the  Sublease  which would  entitle  Subtenant  to cancel the
Sublease or abate the rents,  additional rents or other sums payable  thereunder
or to exercise any self-help or set-off rights thereunder.  If Landlord fails to
cure any default as to which  Subtenant is obligated to give notice  pursuant to
the preceding  sentence within the time provided for in the Sublease,  Subtenant
shall provide  Mortgagee notice of such occurrence and Mortgagee shall then have
an  additional  30 days after  receipt of such notice  within which to cure such
default  or if such  default  cannot  be  cured  within  that  time,  then  such
additional  time as may be necessary  if, within such 30 days,  Mortgagee  shall
give  Subtenant  notice of its  intention  to  diligently  pursue  the  remedies
necessary to cure such default (including,  without limitation,  commencement of
foreclosure  proceedings  or eviction  proceedings  if  necessary to effect such
cure) and  thereafter  does  diligently  pursue such remedies and cure, in which
event the Sublease shall not be terminated and Subtenant  shall not exercise any
other rights or remedies under the Sublease or otherwise while such remedies are
being so diligently pursued by Mortgagee,  other than Subtenant's right, subject
to Section 8.24 of the Overlease, to (a) any abatement, deduction,  counterclaim
or setoff of any rent or additional rent expressly set forth in the Sublease, or
(b) self-help in accordance with the express provisions of the Sublease,  or (c)
terminate the Sublease in accordance  with the provisions  thereof in connection
with a casualty or  condemnation  affecting the Sublet Premises or the Property.
For purposes hereof,  the term Sublease shall include any successor direct lease
between Subtenant and Landlord.

1  To be deleted if Subtenant is not a partnership.


                                      O-10


     7. This  Agreement  may not be modified  except by an  agreement in writing
signed by the parties or their respective successors in interest. This Agreement
shall inure to the  benefit of and be binding  upon the  parties  hereto,  their
respective heirs, representatives, successors and assigns.

     8. Nothing  contained in this  Agreement  shall in any way impair or affect
the lien created by the Mortgage except as specifically set forth herein.

     9. Subtenant  agrees that in the event there is any  inconsistency  between
the terms and  provisions  hereof and the terms and  provisions  of the Sublease
dealing with  non-disturbance  by Mortgagee  or the  provisions  of the Mortgage
referred to in Section  6.01(b) of the Lease (as they relate to Tenant's  rights
and obligations), the terms and provisions hereof shall be controlling.

     10. All notices,  demands or requests made pursuant to, under, or by virtue
of the  Sublease  or this  Agreement  must be in writing and mailed to the party
whom the  notice,  demand or request is being made by  certified  or  registered
mail, return receipt  requested,  at its address set forth above (in the case of
any Notice to Mortgagee, to the attention of John S. Hiott, Vice President). Any
party may change the place that  notices  and  demands are to be sent by written
notice delivered in accordance with this Agreement.

     11.  Notwithstanding  anything to the contrary contained herein,  Subtenant
acknowledges  and agrees that the  provisions  of paragraph  (3)(c) set forth in
Section  6.01(b)  of the Lease  shall be  effective  and run to the  benefit  of
Mortgagee or any other Successor.

     12. This Agreement  shall be governed by the laws of the State of New York.
If any term of this  Agreement  or the  application  thereof  to any  person  or
circumstances shall to any extent be invalid or unenforceable,  the remainder of
this Agreement or the  application  of such term to any person or  circumstances
other  than  those as to which  it is  invalid  or  unenforceable  shall  not be
affected thereby, and each term of this Agreement shall be valid and enforceable
to the fullest  extent  permitted by law. This  Agreement may be executed in any
number of counterparts, each of which when executed and delivered will be deemed
to be an original and all of which taken together,  will be deemed to be one and
the same instrument.

     13. Tenant is executing this  Agreement for the purpose of confirming  that
this  Agreement  satisfies any condition or  requirement in the Overlease or the
Subordination, Non-Disturbance and Attornment Agreement dated ____________, 1995
between  Tenant and  Mortgagee  relating to the  granting  of a  non-disturbance
agreement by Mortgagee to a subtenant of Tenant.

                                      O-11


     IN WITNESS WHEREOF,  the parties hereto have hereunto caused this Agreement
to be duly executed as of the day and year first above written.

                                            Mortgagee
                         

                                 By:_______________________________
                                    Name:
                                    Title:



                                    Subtenant

                                  [--------------------------------]


                                  By:_______________________________
                                     Name:
                                     Title:



                 Tenant

                THE EQUITABLE LIFE ASSURANCE SOCIETY OF THE UNITED STATES


                By:_______________________________
                   Name:
                   Title:



                               [ADD NOTARY FORMS]

                                      O-12



                                    EXHIBIT P

                         CONDENSER WATER SPECIFICATIONS

                                  1290 6TH AVE

                      WATERTREATMENT CONTROL SPECIFICATION

                           MAIN & TENANT COOLING TOWER

- --------------------------------------------------------------------------------
    CONTROL                  LIMITS                       PRODUCT
- --------------------------------------------------------------------------------
       PH                  7.0 - 8.5                         N/A

  CONDUCTIVITY           500 - 900 PPM              RAW WATER X 10 CYCLES

    CORROSION              6 - 8 PPM                 DREW # 2040 & 1625

  FREE CHLORINE         0.1 - 0.25 PPM          DREW # 261 T (TENANT TOWER)

    BIOCIDES               10 X 5TH           DREW # 250 & 255 (ALTERNATE FEED)
- --------------------------------------------------------------------------------


                                      P-1




                        Tenant's Required Work Allowance

                                    EXHIBIT Q

                  TENANT'S REQUIRED WORK AND ALLOWANCE AMOUNTS

     Tenant's  Required Work  Allowance 1. Tenant shall  replace all  disconnect
switches,  transformers  and all panels (both  $200,000 high and low voltage) in
the electrical closets in the Premises with new equipment.

     2. New (or  refurbished and painted if  substantially  new) radiator covers
and  grilles  $360,000  shall  be  provided  on all  floors.  The  standard  for
refurbishment  shall be consistent with the condition of the radiator covers and
grilles on the 19th floor of the  Building as of the date of this Lease as shown
on the photograph of such radiator  covers and grills  attached to this Lease as
Exhibit Z.

     3. All floors  shall be scraped,  patched and leveled to the  standard of a
first class $125,000 office building, ready to receive floor covering.

     4.  Tenant  shall  construct  accessible  bathrooms  on each  floor  of the
Premises,  with $180,000 handicapped  facilities in compliance with NYC Building
Code, Local Law 58 and ADA. The specific location of, and the level of finish to
be used in, the ADA  bathrooms  shall be subject to the review and  approval  of
Landlord. Each ADA bathroom shall include:

     (a) 1 handicap  toilet and  lavatory.  (b) Drywall  (greenboard)  walls,  1
hollow  metal door and buck with lever  hardware.  (c) American  Olean  Standard
floor tile with  waterproofing  and base.  (d) Toilet  accessories (2 grab bars,
soap  dispenser,  paper towel  dispenser,  tilt  mirror,  toilet  paper  holder,
sanitary  napkin  disposal).  (e) Lay-in  ceiling with light  fixture - 1 G.F.I.
duplex  outlet.  (f)  Strobe/speaker.  (g) Toilet  exhaust with exhaust fan. (h)
Sprinkler

     5.  All  damaged  window  mullions  are  to be  repaired  to a  "like  new"
condition.  The  $145,000  standard  for  repair  shall be  consistent  with the
condition  of the  mullions on the 19th floor of the  Building as of the date of
this Lease as shown on the photograph of such mullions attached to this Lease as
Exhibit Z.

     6. Tenant shall be responsible for ADA compliance in the core areas on each
floor  of  $35,000  the  Premises,  including,  without  limitation,  core  door
hardware,  horn strobes,  core signage,  etc. (but excluding fire pull stations,
warden  stations,  elevator  call  buttons  and hall  lanterns).  All core  door
hardware shall be uniform and reasonably acceptable to Landlord.

     7. Tenant shall refurbish all existing  bathrooms to not less than Building
standard  $101,000  condition.   This  refurbishment   shall  include,   without
limitation,  replacement of cracked, damaged and missing floor, wall and ceiling
tiles, cracked, damaged and missing mirrors, damaged partitions and ceilings and
damaged, broken and missing fixtures and hardware.

     8.  Tenant  shall  reinstate  within the core the second  men's and women's
bathrooms  on  $103,000  the 11th floor of the  Building  which are now  located
outside the core.  Such  bathrooms  shall be located within the core on the 11th
floor of the Building in the location  designated on Schedule 1 attached to this
Exhibit Q. All hardware,  doors,  bucks,  saddles, as well as 1 water closet and
lavatory in each new men's and women's bathroom must be ADA-compliant.  Each new
bathroom shall include the following:

     (a) Men's Room- 3 water  closets (1 of which is handicap) 4  lavatories  (1
handicap) 3 urinals  Women's Room- 5 water closets (1 handicap) 4 lavatories (b)
New rated  door/buck/hardware  into each. (c) American Olean Standard floor tile
with waterproofing and wall tile (3/4 UP) (handicap-compliant  saddles). (d) New
ceiling-hung  toilet partitions.  (e) New toilet accessories (all including grab
bars,  etc.) and mirrors.  (f) New lay-in ceiling with light fixtures (4 ea. 1 x
4's  in  each  men's  and  women's  rooms  -  2  G.F.I  outlet  in  each).   (g)
Strobe/speaker in each. (h) Install toilet exhaust with exhaust fan in each. (i)
Relocate sprinklers as necessary.

     9.  Tenant  shall  install  the main  sprinkler  loop on each floor (if not
already $211,000  installed) [and Tenant's sprinkler  distribution shall include
all core bathrooms and utility closets].

                                      Q-1


                             SCHEDULE 1 TO EXHIBIT Q

                      LOCATION OF 11TH FLOOR CORE BATHROOMS

                                 See Exhibit AA


                                      Q-2


                                    EXHIBIT R

                           1290 Avenue of the Americas

                             ELEVATOR SPECIFICATIONS

Cars # 1 to 8       Lobby - 6th floor
                    4000# @500 F.P.M.

Cars # 9 to 16      Lobby, 7th - 15th floor
                    3500# @ 500 F.P.M.

Cars # 17 to 20     Lobby, 15th - 22nd floor
                    3500# @ 800 F.P.M.

Cars # 21 to 24     Lobby, 22nd - 29th floor
                    3500# @ 800 F.P.M.

Cars # 25 to 32     Lobby, 30th - 43rd floor
                    3500# @ 1000 F.P.M.

FREIGHT CARS
Cars # 33 & 34      Sub-cellar to 43rd floor
                    4000# @ 800 F.P.M.

HYDRAULIC LIFTS
      #35           30,000#
      #36           10,000#

Passenger car operating specifications

o  Rated speed indicated +/-5%

o  Floor to floor time 9.0 sec +/-5% 
   (From full door closure, next floor 3/4 open)

o  Door operating time 2.0 seconds

o  Door closure time 3.0 seconds

o  Car call & hall call dwell time in accordance with ADA requirements


                                      R-1




                                    EXHIBIT S

                    LOCATIONS FOR NYNEX SECOND PORT OF ENTRY

                                 See Exhibit AA

                                      S-1



                                    EXHIBIT T

                                ANTENNA LOCATION

                                 See Exhibit AA

                                      T-1


                                    EXHIBIT U

                            LOCATION OF BENTON PANELS

                                 See Exhibit AA


                                      U-1



                                    EXHIBIT V

                     EXTERIOR SIGNAGE LOCATIONS AND CRITERIA

                                 See Exhibit AA


                                      V-1


                                    EXHIBIT W

                              LOBBY RENOVATION WORK


LIST OF DRAWINGS, SPECIFICATIONS AND OTHER BID DOCUMENTS
- --------------------------------------------------------

CONTRACT DOCUMENTS - PREPARED BY O&Y
- ------------------------------------

Article 1 to 14       O&Y General Conditions      1 thru 34     11/1/94

Appendix A            Insurance                   1 thru 3      11/1/94

Sample                Contractor Affidavit,
                      Lien Waiver and Release
                      of Claim                    1             not dated

Sample                Subcontractor Affidavit,
                      Lien Waiver and Release
                      of Claim                    1             not dated

Building Rules and Regulations                    1 thru 4      4/28/95


                     DRAWINGS & SPECIFICATIONS - PREPARED BY
              DAVID KENNETH SPECTER & ASSOCIATES, ARCHITECTS, P.C.

                                 SPECIFICATIONS
                                 --------------
Section        Pages                Section Title
- -------        -----                -------------

Index            3             Index to Specifications

                      DIVISION #1 - GENERAL REQUIREMENTS

01000            4             Description of Work
01010            6             Alterations to Existing Facilities
01030            3             Alternate Proposals
01040            4             Project Coordination
01045            4             Cutting and Patching
01080            1             Permits and Compliance
01200            2             Project Meetings
01300            7             Submittal Requirements
STAMP            1             Combined Contract Shop Drawing
                                Submittal and Review Stamp
CSC              2             Certification of Specification Compliance
01420            2             Controlled Inspection
01500            6             Temporary Facilities
01600            2             Material and Equipment
01700            5             Project Close Out


                                       W-1





                             DIVISION #2 - SITE WORK

02070            6              Selective Removals and Demolition
02500            4              Pavements and Surfacing
02900            1              Landscaping

                           DIVISION #3 - CONCRETE WORK

03300            12             Plain and Reinforced Concrete

                              DIVISION #4 - MASONRY

04100            3              Mortars
04400            7              Stone Work

                              DIVISION #5 - METALS

05100            10             Structural Steel
05300            4              Metal Decking
05400            4              Cold Formed Metal Framing
05500            8              Miscellaneous Metals - General
05700            5              Ornamental Metal Systems
05741            4              Ornamental Metal Restoration
05750            3              Ornamental Metal Column Covers

                         DIVISION #6 - WOOD AND PLASTICS

06100            7              Rough Carpentry
06200            11             Finish Carpentry

                  DIVISION #7 - THERMAL AND MOISTURE PROTECTION

07110            8              Membrane Waterproofing
07250            5              Firestopping
07270            7              Firestopping
07410            10             Preformed Laminated Metal Panel System
07900            9              Caulking and Sealing

                         DIVISION #8 - DOORS AND WINDOWS

08110            7              Hollow Metal Work
08400            6              Entrance Construction
08470            6              Revolving Entrance Doors
08700            4              Finished Hardware
08800            5              Glazing
08810            5              Glass Ceiling System, Complete
08900            10             Structural Glazed Wall Systems


                                       W-2




                             DIVISION #9 - FINISHES

09200              6           Furring, Lathing and Plastering
09250              8           Gypsum Drywall
09600              7           Stone Flooring
09900              8           Painting

                           DIVISION #10 - SPECIALTIES

10400              3                  Identifying Devices

                            DIVISION #11 - EQUIPMENT

NONE
                           DIVISION #12 - FURNISHINGS

NONE

                       DIVISION #13 - SPECIAL CONSTRUCTION

NONE

                        DIVISION #14 - CONVEYING SYSTEMS

NONE

                           ARCHITECTURAL DRAWING LIST
                           --------------------------

A-0                Title - Drawing Sheet List; Building Department Notes;
                   Plot Plan; Location Plan; Abbreviations; Symbol List
D-1                Demolition Plan and Notes
A-1                Partial Floor Plan A
A-2                Partial Floor Plan B, Column Details
A-3                Partial Floor Plan C, D & E Floor Details
A-4                Partial Reflected Ceiling Plan A Ceiling Details
A-5                Partial Reflected Ceiling Plan B Ceiling Details
A-6                Partial Reflected Ceiling Plan C, D & E
A-7                Exterior Elevations, Planter, Flagpole Details
A-8                Interior Elevation
A-9                Interior Elevation
A-10               Interior Elevation
A-11               Interior Elevation
A-12               Interior Elevation
A-13               Interior Elevation
A-14               Entrance & Storefront Details
A-15               Canopy Details
A-16               Canopy Details
A-17               Stone Details, Wood Details
A-18               Glass Ceiling Panel Details; Ceiling Details
A-19               Glass Ceiling Panel Details; Ceiling Details
A-20               Concierge Desk Details; Railing Details
A-21               Elevator Car Details


                                       W-3





                    DRAWINGS PREPARED BY STRUCTURAL ENGINEER,
                            OFFICE OF JAMES RUDERMAN
                            ------------------------

S-1             Canopy Details and Floor Infill Details
S-2             Miscellaneous Details and General Notes

                      DRAWINGS & SPECIFICATIONS PREPARED BY
            MECHANICAL & ELECTRICAL ENGINEERS, JAROS BAUM AND BOLLES
            --------------------------------------------------------

                            DIVISION #15 - MECHANICAL

SECTION         Section Title               # of Pages         Date
- -------         -------------               ----------         ----

15200           Plumbing                    15200-TC-1         4/10/95
15200           Plumbing                    15200-1            4/10/95

15300           Fire Protection             15300-TC-2         4/10/95
15300           Fire Protection             15300-1            4/10/95

15600           Heating, Ventilating
                 and Air Conditioning       TC-1 &2            4/10/95
15600           Heating, Ventilating
                 and Air Conditioning       15600-1            4/10/95

16100           Electrical                  TC-1               4/10/95
16100           Electrical                  TC-2               4/10/95


MECHANICAL DRAWING LIST
- -----------------------

M-1       Mechanical Drawing Sheet List; Building Department Notes;
          General Notes; Symbols List & Schedule
M-2       Partial Reflected Ceiling Plan A - Demolition
M-3       Partial Reflected Ceiling Plan B - Demolition
M-4       Partial Reflected Ceiling Plan C - Demolition
M-5       Partial Reflected Ceiling Plan A - Mechanical
M-6       Partial Reflected Ceiling Plan B - Mechanical
M-7       Partial Reflected Ceiling Plan C - Mechanical
M-8       Partial Floor Plan A - Heating

Electrical Drawing List
- -----------------------

E-1       Electrical Symbols List & Schedules
E-2       Partial Reflected Ceiling Plan A - Lighting
E-3       Partial Reflected Ceiling Plan B - Lighting
E-4       Partial Reflected Ceiling Plan C, D & E - Lighting
E-5       Plan - Lighting Demolition
E-6       Plan - Power
E-7       Electrical Fire Alarm & Power Distribution Riser Diagram


                                       W-4





Sprinkler Drawing List
- ----------------------

SP-1      Partial Reflected Ceiling Plan A - Sprinkler
SP-2      Partial Reflected Ceiling Plan B - Sprinkler
SP-3      Partial Reflected Ceiling Plan C, D & E - Sprinkler

Plumbing Drawing List
- ---------------------

P-1       Partial Floor Plan A - Plumbing
P-2       Partial Floor Plan C, D & E - Plumbing

                        ASBESTOS ABATEMENT SPECIFICATIONS
                  PREPARED BY HILLMANN ENVIRONMENTAL CO., INC.
                  --------------------------------------------

                       DIVISION #1 - GENERAL REQUIREMENTS
Section                   Title                                  # of Pages
- -------                   -----                                  ----------

  --       Asbestos Abatement - Insurance Requirements                1
01013      Summary of Work                                            13
01043      Project Coordination                                       3
01092      Codes & Regulations                                        7
01313      Schedules, Reports, Payments                               4
01314      Required Submittals                                        4
01410      Air Monitoring & Test Lab. Services                        5
01503      Temporary Facilities                                       4
01513      Negative Air Containment System                            6
01526      Preparation of Work Area                                   6
01527      Local Air Protection                                       4
01560      Worker Protection - Asbestos Abatement                     4
01562      Respiratory Protection                                     5
01563      Decontamination Enclosure System                           7
01701      Project Closeout                                           5
01714      Work Area Clearance                                        4
01810      Negative Air Containment                                   3
01830      Mini-Containment Technique                                 3


                                      W-5



                                    EXHIBIT X

                     FORMULA TO DETERMINE OVERTIME HVAC COST
                                   (PER ZONE)

HEATING (6 MONTHS) JAN TO MAR, OCT TO DEC

           DETERMINE KW VALUE OF AIR HANDLERS & PUMPS WHICH SERVE
THE EQUITABLE PREMISES AFTER VAV SYSTEM IS COMMISSIONED. (CURRENTLY
PREDICTED AT 4 FLOOR MINIMUM)
           DETERMINE OUTSIDE AIR REQUIREMENTS FOR OCCUPIED FLOORS.
           ESTABLISH MONTHLY M/# STEAM & ENERGY
KWH RATE FROM CON EDISON BILL
           APPLY PIPE FRICTION & DAMPER LOSS FACTOR OF 4%

SAMPLE BILL:

ELECTRIC
           KW X ENERGY (KWH) RATE = COST
           450 KW X .06/KWH = $27.00 HR

STEAM (INTERIOR)
           OUTSIDE AIR CFM X (72 - AVG WINTER TEMP)X 1.08 X 1.04 X RATE = COST
           -----------------------------------------
                        970,000 BTU'S M/#

           31,000 X 30  DELTA  "T" X 1.08 X  1.04 X  $12.85  = $13.84 HR
           ----------------------------------------
                        970,000 BTU'S M/#

STEAM (PERIMETER)
         DESIGN WATER LOAD M #'S X (AVG WINTER DD DAYS - 65)X 1.04 X RATE = COST

         2.63 M#'S X (23/65) X 1.04 X $12.85 = $12.43 HR

- -------------------------------------
HOURLY WINTER RATE =           $53.27
- -------------------------------------


                                      X-1





COOLING (6 MONTHS) APR TO SEPT

          DETERMINE KW VALUE OF AIR HANDLERS & PUMPS WHICH SERVE
THE EQUITABLE PREMISES AFTER VAV SYSTEM IS COMMISSIONED. (CURRENTLY
PREDICTED AT 4 FLOOR MINIMUM)
          DETERMINE CFM REQUIREMENT FOR OCCUPIED FLOORS.
          ESTABLISH MONTHLY M/# STEAM & ENERGY
KWH RATE FROM CON EDISION BILL
          APPLY  PIPE  FRICTION  & DAMPER  LOSS  FACTOR  OF 4%  
          DETERMINE CHILLER  PUMPING & COOLING TOWER FAN KW 
          DETERMINE CHILLER STEAM TON HOUR LOAD @ 18.5 #'S TON/HR
          DETERMINE  MAKE UP WATER USE & PUMPING ELECTRIC 
          DETERMINE WATER TREATMENT MAKE UP

SAMPLE BILL:

BASE CHILLER PUMPING & TOWER FAN ELECTRIC
         KW X ENERGY (KWH) RATE = COST
         300 KW X .06/KWH = $24.00 HR

ELECTRIC
         KW X ENERGY (KWH) RATE = COST
         450 KW X .06/KWH = $27.00 HR

COOLING (INTERIOR)
         SUPPLY AIR CFM X (81 - 53) X 1.08 X 1.04 = TONS HR
         --------------------------------------------------
                                 12,000 BTU'S

        140,000 X 28 DELTA "T" X 1.08 X 1.04 = 367 TONS HR
        -----------------------------------
                         12,000 BTU'S

COOLING  (PERIMETER)
          DESIGN WATER LOAD TON/HRS X LOAD FACTOR X 1.04= TONS HR

          229 TONS X .66 = 96 TONS HR

96 + 347 = 463 TONS HR
463 x 18.5 #/TON = 8.56 M#'S

8.56 M#'S X $10.65 M#  = $91.16 HR

MAKE UP WATER
          GPM @ 2.5% EVAPORATION, BLOWDOWN & DRIFT RATE

          500 TONS X 3 GPM TON X .025 = 37.5  GAL MIN  
          37.8 X 60  MIN/HR = 2,250 GAL HR 
          1 GAL = $.0050 
          2,250 X .0050/GAL = $11.25

          DOMESTIC WATER PUMP ELECTRIC
          REQUIRED GPH/RATED GPH X ENERGY KWH = COST

          2,250/18,000 X 75 KW X .06 = $.56

WATER TREATMENT
          $.00227 TON/HR

          463 X .00227 = $1.05

- ----------------------------------------
HOURLY SUMMER RATE =             $156.02
- ----------------------------------------


                                      X-2



                                    EXHIBIT Y

                  [INTENTIONALLY OMITTED IN ORIGINAL DOCUMENT]

                                      Y-1


                                    EXHIBIT Z

               19TH FLOOR RADIATOR COVERS AND GRILLES AND MULLIONS

                                 See Exhibit AA

                                      Z-1


                                   Exhibit AA

     The  following  Exhibits  have been omitted  from this filing  because they
consist of graphic or image  material and cannot be  reproduced in an electronic
filing:

     Exhibit B1 through B15: Contains floor plans of space being leased.

     Exhibit Q:  Schedule 1 to  Exhibit Q contains a floor plan  indicating  the
location of certain  work to be  performed.

     Exhibit  S:  Contains  an  electronic  schematic  indicating  how a service
provider will access the building.

     Exhibit T: Contains a plan  indicating  where an antenna is to be attached.

     Exhibit U: Contains an elevation indicating where art is to be installed in
the lobby.

     Exhibit V:  Contains  drawings of where  exterior  signs are to be located.

     Exhibit Z:  Contains  photographs  indicating  the  condition  of  certain
interior design features.

                                      AA-1