STOCK PURCHASE AGREEMENT

                       Made the 10th day of February, 1998









                                TABLE OF CONTENTS


                                                                        PAGE NO.
                                                                        --------
                                                                     
ARTICLE 1 - INTERPRETATION ..............................................      2
   1.1   Definitions ....................................................      2
   1.2   Construction ...................................................      8
   1.3   Schedules and Exhibits .........................................      9

ARTICLE 2 - PURCHASE AND SALE OF PURCHASED SHARES .......................     10
   2.1   Purchase and Sale of Purchased Shares ..........................     10
   2.2   Purchase Price and Allocation ..................................     10

ARTICLE 3 - CLOSING ARRANGEMENTS ........................................     10
   3.1   Place of Closing ...............................................     10
   3.2   Delivery of Certificates .......................................     10
   3.3   Payment of the Purchase Price ..................................     11
   3.4   Other Closing Deliveries of Sellers ............................     11
   3.5   Other Closing Deliveries of Purchaser ..........................     11

ARTICLE 4 - REPRESENTATIONS AND WARRANTIES ..............................     11
   4.1   Representations and Warranties of the Sellers ..................     11
   4.2   Representations and Warranties of the Purchaser ................     28
   4.3   Survival of Sellers' Representations and Warranties ............     30
   4.4   Survival of Purchaser's and United's Representations and
         Warranties .....................................................     30

ARTICLE 5 - COVENANTS OF THE PARTIES PRIOR TO CLOSING ...................     31
   5.1   Operations before Closing ......................................     31
   5.2   Approvals and Consents .........................................     33
   5.3   Competitive Information ........................................     33
   5.4   Confidential Information .......................................     34
   5.5   Consultant Opinions ............................................     34
   5.6   New Competitive Information ....................................     35
   5.7   Transitional Services ..........................................     35

ARTICLE 6 - CONDITIONS PRECEDENT TO THE PERFORMANCE
         BY THE PARTIES OF THEIR OBLIGATIONS UNDER THIS AGREEMENT .......     35
   6.1   Conditions for the Benefit of the Purchaser ....................     35
   6.2   Conditions for the Benefit of the Sellers ......................     38
   6.3   Termination by Purchaser .......................................     39
   6.4   Termination by Sellers .........................................     39

ARTICLE 7 - COVENANTS OF THE PARTIES FOLLOWING CLOSING ..................     40
   7.1   Closing Date Balance Sheet .....................................     40
   7.2   Adjustments ....................................................     41
   7.3   Income Statement for Stub Period ...............................     41
   7.4   Confidentiality ................................................     42




                                      - 2 -

   7.5   Employees ......................................................     42
   7.6   Non-Competition ................................................     42
   7.7   Non-Solicitation ...............................................     43
   7.8   Access to Records ..............................................     43
   7.9   Mexican Foreign Investment Notice ..............................     44
   7.10  Recording Transfer of Azerty Mexico Shares .....................     44
   7.11  Change of Name .................................................     44

ARTICLE 8 - INDEMNIFICATION .............................................     45
   8.1   Indemnification by Sellers .....................................     45
   8.2   Indemnification by the Purchaser ...............................     45
   8.3   Procedure for Indemnification ..................................     46
   8.4   Additional Rules and Procedures ................................     47
   8.5   Limits to Claims ...............................................     48
   8.6   Amounts Recovered ..............................................     49
   8.7   Non-Monetary Rights ............................................     49
   8.8   Purchase Price Adjustment ......................................     49
   8.9   Certain Tax Matters ............................................     49
   8.10  Transfer Taxes .................................................     51

ARTICLE 9 - GENERAL .....................................................     51
   9.1   Public Notice ..................................................     51
   9.2   Expenses .......................................................     51
   9.3   Further Assurances .............................................     51
   9.4   Time of the Essence ............................................     52
   9.5   Benefit of the Agreement .......................................     52
   9.6   Entire Agreement ...............................................     52
   9.7   Waiver .........................................................     52
   9.8   Notices ........................................................     52
   9.9   Assignment .....................................................     54
   9.10  Severability ...................................................     54
   9.11  Counterparts ...................................................     54
   9.12  Governing Law ..................................................     54
   9.13  Dispute Resolution .............................................     54
   9.14  United Guarantee ...............................................     54
   9.15  Service ........................................................     55
   9.16  Waiver of Jury Trial and Punitive Damages ......................     55


                            STOCK PURCHASE AGREEMENT

                  THIS AGREEMENT made the 10th day of February, 1998.

A M O N G:

                                ABITIBI-CONSOLIDATED INC., a corporation
                                incorporated under the federal laws of  
                                Canada ("ACI")

                                - and -

                                ABITIBI-CONSOLIDATED SALES
                                CORPORATION, a corporation incorporated
                                under the laws of the State of Delaware ("ACSC")

                                (ACI and ACSC being collectively referred to
                                herein as the "Sellers")

                                - and -

                                AZERTY INCORPORATED, a corporation
                                incorporated under the laws of the State of
                                Delaware ("Azerty")

                                - and -

                                POSITIVE ID WHOLESALE INC., a corporation
                                incorporated under the laws of the State of
                                Delaware ("ID")

                                - and -

                                AP SUPPORT SERVICES INCORPORATED, a
                                corporation incorporated under the laws of the 
                                State of Delaware ("APSS")

                                - and -

                                AZERTY DE MEXICO, S.A. DE C.V., a
                                corporation incorporated under the laws of the
                                federal district of Mexico ("Azerty Mexico")

                                - and -

                                UNITED STATIONERS SUPPLY CO., a
                                corporation incorporated under the laws of 
                                the State


                                     - 2 -

                                of Illinois (the "Purchaser")

                                - and -

                                UNITED STATIONERS INC., a corporation
                                incorporated under the laws of the State of
                                Delaware ("United")



                  WHEREAS on the date hereof ACSC is, and on the Closing Date 
(as hereinafter defined) ACSC will be, the registered and beneficial owner of 
all of the issued and outstanding shares in the capital of Azerty, ID and 
APSS;

                  AND WHEREAS on the date hereof ACI and Azerty are, and on 
the Closing Date ACI and Azerty will be, the registered and beneficial owners 
of 99% and 1% of all of the issued and outstanding shares in the capital of 
Azerty Mexico, respectively;

                  AND WHEREAS the Sellers wish to sell to the Purchaser and 
the Purchaser wishes to purchase from the Sellers all of the issued and 
outstanding shares in the capital of the Corporations (as hereinafter 
defined);

                  NOW THEREFORE in consideration of the premises and the 
mutual covenants and agreements herein contained, the parties hereto hereby 
covenant and agree as follows:

                           ARTICLE 1 - INTERPRETATION

1.1               DEFINITIONS. In this Agreement, or in any amendments hereto,
unless there is something in the subject matter or context inconsistent 
therewith, the following terms shall have the following meanings, 
respectively:

         (a)      "ADJUSTED CLOSING DATE BALANCE SHEET" has the meaning 
                  attributed thereto in Schedule 7.1;

         (a.1)    "ADJUSTMENT DATE" means the date which is five Business Days
                  after the date on which the Closing Date Balance Sheet is
                  final and binding on the parties, as contemplated by Article 7
                  or, should there be an Adjusted Closing Date Balance Sheet in
                  the circumstances contemplated by Section 7.1 and Schedule
                  7.1, such date which is five Business Days after the date on
                  which such Adjusted Closing Date Balance Sheet is final and
                  binding on the parties, as contemplated by Article 7;

         (b)      "AFFILIATE" of a Person shall mean a Person that directly, or
                  indirectly through one or more intermediaries, controls or is
                  controlled by, or is under common control with, such Person;


                                     - 3 -

         (c)      "AGREEMENT" means this Agreement and includes all Exhibits and
                  Schedules attached thereto;

         (d)      "AUTHORITY" means any governmental authority, body, agency,
                  division or department, whether federal, state or local,
                  including without limitation such Persons in Canada, the
                  United States and Mexico;

         (e)      "AXIDATA" means Axidata Inc., a corporation incorporated under
                  the federal laws of Canada;

         (f)      "BUSINESS" means the distribution of computer consumables,
                  peripherals, data storage products, accessories and automated
                  identification equipment, and the provision of logistics and
                  marketing services, including telemarketing, currently carried
                  on by the Corporations, as reflected in the December 31
                  Financial Statements;

         (g)      "BUSINESS DAY" means every day except a Saturday, Sunday or a
                  day on which principal commercial banks are not open for
                  business in the City of New York, New York;

         (h)      "CLAIMS" means any and all losses (excluding loss of profits),
                  damages, Taxes, expenses, liabilities (whether accrued,
                  actual, contingent or otherwise), claims, demands, actions, of
                  whatever nature or kind, including legal fees and expenses on
                  a solicitor/attorney and client basis and other professional
                  fees and disbursements.

         (i)      "CLOSING" means the completion of the transactions described 
                  in this Agreement;

         (j)      "CLOSING DATE" or "DATE OF CLOSING" means March 27, 1998 or
                  such other date as the Purchaser and the Sellers may agree
                  upon and on which the Closing occurs;

         (k)      "CLOSING DATE BALANCE SHEET" means, collectively, the audited
                  combined (including the elimination of all significant
                  inter-company transactions and balances) balance sheet
                  including each of the Corporations as at the Closing Date,
                  prepared in accordance with GAAP and the procedures set forth
                  in Schedule 7.1;

         (l)      "COMPETITIVE INFORMATION" means competitively sensitive
                  information of the Sellers or Corporations, or any of them,
                  including customer lists, pricing, volumes and specific
                  product mix by customer or region, and supplier information 
                  relating to specific contract terms such as rebates and co-op
                  advertising terms and pricing;

         (m)      "CONFIDENTIAL INFORMATION" means any information, the
                  disclosure of which would result in the violation of any
                  confidentiality covenant to which any of the Sellers or the
                  Corporations is a party;

         (n)      "CONSENT" means the consent or approval of the landlord of a
                  Location, any other



                                     - 4 -

                  party to a Material Contract with any of the Sellers or the 
                  Corporations or any Authority to the completion of the 
                  transactions contemplated by this Agreement, the execution 
                  of this Agreement and the Closing or the performance of any 
                  terms hereof;

         (o)      "CORPORATIONS" means, collectively, Azerty, ID, APSS and
                  Azerty Mexico, and "CORPORATION" means any one of them;

         (p)      "DEBT" means all current liabilities and long term debt of any
                  of the Corporations as disclosed or required to be disclosed
                  (or with respect to current liabilities and long-term debt
                  incurred subsequent to December 31, 1997, which would be
                  required to be so disclosed if such Debt had been outstanding
                  on such date) in accordance with GAAP in the December 31
                  Balance Sheet;

         (q)      "DECEMBER 31 BALANCE SHEET" means, collectively, the audited
                  combined (including the elimination of all significant
                  inter-company transactions and balances) balance sheet
                  including each of the Corporations as at December 31, 1997;

         (r)      "DECEMBER 31 FINANCIAL STATEMENTS" means the audited combined
                  financial statements (including the elimination of all
                  significant inter-company transactions and balances) including
                  each of the Corporations for the fiscal year ended December
                  31, 1997 consisting of the December 31 Balance Sheet, a
                  statement of income (loss) and a statement of cash flows and
                  all notes and schedules thereto, which have been prepared in
                  accordance with GAAP and as described in Section 4.1(f),
                  copies of which are annexed as Schedule 1.1(r) hereto;

         (s)      "EMPLOYEES" has the meaning attributed thereto in section 
                  4.1(s);

         (t)      "ENVIRONMENTAL LAWS" means all foreign, federal, municipal or
                  local laws, statutes, rules, regulations, ordinances, orders,
                  directives (to the extent legally binding) and other
                  requirements of any Authority (having the force of law) and in
                  force as of the date hereof without regard to any changes
                  thereto following the date hereof relating to environmental or
                  occupational health matters, including legislation governing
                  the labelling, use and storage of Hazardous Substances;

         (u)      "ENVIRONMENTAL ORDERS" means applicable orders or decisions
                  rendered by any Authority under or pursuant to any
                  Environmental Laws;

         (v)      "ENVIRONMENTAL PERMITS" means all permits, certificates,
                  registrations, licenses and other approvals issued by any
                  Authority and or required for the operation by the
                  Corporations or any of them of their Locations in compliance
                  with all Environmental Laws or Environmental Orders;

         (w)      "ERISA" shall mean the United States Employee Retirement
                  Income Security Act of 1974, as amended (including any
                  successor act), and the rules and regulations



                                     - 5 -

                  promulgated thereunder;

         (x)      "ERISA AFFILIATE" shall mean any Person under common control 
                  with the Corporations or who is treated as a single employer 
                  with any of the Corporations under Section 414(b), (c), (m), 
                  or (o) of the U.S. Tax Code;
 
         (y)      "ESTIMATED PURCHASE PRICE" has the meaning attributed thereto 
                  in section 2.2;

         (z)      "FINANCIAL STATEMENTS" has the meaning attributed thereto in 
                  section 4.1(f);

         (aa)     "GAAP" means generally accepted accounting principles as set
                  forth in the handbook published by the Canadian Institute of
                  Chartered Accountants or interpretations and general practice
                  thereof;

         (bb)     "HAZARDOUS SUBSTANCES" means any material substance or waste
                  that is prohibited, controlled, regulated or which forms the
                  basis of liability under any Environmental Laws, including
                  PCBs, asbestos, urea formaldehyde foam insulation, petroleum
                  or petroleum by-products;

         (cc)     "HSR ACT" has the meaning attributed thereto in section 
                  4.1(b)(iii)(A);

         (dd)     "INTELLECTUAL PROPERTY AGREEMENT" means an agreement 
                  substantially in the form of the agreement annexed hereto 
                  as Schedule 1.1(ad);

         (ee)     "KNOWLEDGE" means the actual knowledge, after due inquiry
                  within ACI and the Corporations, of the Person charged with
                  knowledge; and in the case of the Sellers or the Corporations
                  includes the actual knowledge of any officer or director of
                  the Sellers or the Corporations;

         (ff)     "LAW" means any statute, law, ordinance, regulation, rule or 
                  other legally binding promulgation of an Authority;

         (gg)     "LIEN" means any lien, mortgage, pledge, assessment, easement,
                  right of way, encroachment, security interest, restriction,
                  lease, sublease, tenancy, adverse claim, levy or charge or 
                  other encumbrance of any kind or any contract or agreement to 
                  enter into any of the foregoing;

         (hh)     "LOCATION" means any premises utilized in the Business which 
                  is owned or subject to a lease, sublease or license entered 
                  into by a Corporation;

         (ii)     "LUCAS" means The Lucas Group, consultants retained by the 
                  Purchaser;

         (jj)     "MATERIAL ADVERSE EFFECT" means, where used in relation to the
                  Corporations, a material adverse effect on the business,
                  operations, assets, condition (financial or otherwise) or
                  prospects of the Corporations considered as a whole;



                                     - 6 -

         (kk)     "MATERIAL CONTRACT" means any agreement, written or oral, to
                  which any Corporation is a party or otherwise relating to the
                  Business having a term in excess of one year and involving an
                  amount, in the aggregate, in excess of $50,000 or having a
                  term which does not exceed one year and involving payments or
                  loans by any party thereunder in excess of $100,000 in the
                  aggregate;

         (ll)     "NET TANGIBLE ASSETS" has the meaning attributed thereto in 
                  Section 7.1(e);

         (mm)     "OPD" means the office products division of ACI which includes
                  the Corporations, which corporations are being sold hereunder,
                  and Axidata, Eurozerty B.V., ISFO B.V. and AP Support Services
                  B.V., which corporations are not being sold hereunder;

      (am.1)      "OFFICE PRODUCTS LONG TERM INCENTIVE PLAN" means the existing 
                  Amended and Restated Office Products Long Term Incentive Plan
                  of ACI;

         (nn)     "PENSION AUTHORITIES" means the applicable foreign, federal
                  and state pension regulatory authorities, including, without
                  limitation, the United States Internal Revenue Service;

         (oo)     "PENSION LEGISLATION" means the applicable foreign, federal or
                  state pension benefits legislation and, where applicable, the 
                  U.S. Tax Code;

         (pp)     "PERMITTED LIENS" has the meaning attributed thereto in 
                  section 4.1(k);

         (qq)     "PERSON" means an individual, partnership, unincorporated
                  association, organization, syndicate, corporation, trust and a
                  trustee, executor, administrator or other legal or personal
                  representative;

         (rr)     "PLAN TERMS" means the terms and conditions of all Plan texts
                  and amendments thereto;

         (ss)     "PLANS" means, with respect to the Corporations and their 
                  ERISA Affiliates, "employee benefit plans" as defined in 
                  Section 3(3) of ERISA, stock bonus, stock ownership, stock
                  option, stock purchase, stock appreciation rights, phantom
                  stock, and other stock plans (whether qualified or 
                  non-qualified), and all other pension, welfare, severance, 
                  retirement, bonus, deferred compensation, incentive 
                  compensation, insurance (whether life, accident and health,
                  or other and whether key man, group, workers compensation, 
                  or other), profit sharing, disability, thrift, day care, legal
                  services, leave of absence, layoff, and supplemental or excess
                  benefit plans, in each case existing on or before the Closing 
                  Date which any of the Corporations maintains or sponsors and 
                  which cover some or all of the present or former officers, 
                  directors, employees, agents, consultants, or other similar 
                  representatives providing services to or for any of the 
                  Corporations or their ERISA


                                     - 7 -

                  Affiliates but for greater certainty does not include the 
                  Office Products Long Term Incentive Plan;

         (tt)     "PRIME RATE" means the rate of interest from time to time
                  announced by The Chase Manhattan Bank at its principal office
                  in New York, New York at its prime commercial lending rate;

         (uu)     "PURCHASED SHARES" means the issued and outstanding common
                  shares and, in the case of Azerty Mexico, Class 1 and Class 2
                  shares in the capital of the Corporations described in
                  Schedule 1.1(au) together with any additional shares issued to
                  the Sellers after the date hereof in connection with
                  capitalization of inter-company debt;

         (vv)     "PURCHASE PRICE" has the meaning attributed thereto in 
                  section 2.2;

         (ww)     "REAL PROPERTY" means any real property, whether owned or 
                  leased, and used for the conduct of the Business or previously
                  used for such purpose;

         (xx)     "REGULATORY APPROVALS" means all necessary approvals, permits,
                  sanctions, rulings, orders or consents from any Authority or 
                  self-regulatory organization within or outside of the U.S.A. 
                  and/or Mexico with respect to the transactions contemplated by
                  this Agreement;

         (yy)     "REMEDIAL REQUIREMENT" means any demand, directive or order of
                  any Authority having jurisdiction (if legally binding) or any
                  requirement or obligation under Environmental Laws to
                  investigate, remediate, clean-up or otherwise address
                  Hazardous Substances in order for the Business to be in
                  compliance with Environmental Laws, having regard to the
                  operations of the Business and the use of the Real Property as
                  at the Closing Date and without regard to any changes thereto
                  after the Closing Date;

         (zz)     "SELLERS" means, collectively, ACI and ACSC and "SELLER" means
                  either of them.

        (aaa)     "SEPTEMBER 30 BALANCE SHEET" means, collectively, the
                  unaudited balance sheets of each of the Corporations as at
                  September 30, 1997, copies of which are attached hereto as
                  Schedule 1.1(ba);

      (ba.1)      "SIDE AGREEMENT" means the agreement dated of even date 
                  herewith between the Sellers and the Purchaser;

        (bbb)     "TAXES" shall mean all taxes, charges, fees, levies, duties 
                  or other similar assessments, reassessments or liabilities, 
                  including without limitation (a) income, gross receipts, ad 
                  valorem, premium, excise, real property, personal property,
                  asset, sales, use, transfer, withholding, employment, payroll,
                  profit sharing, medicare, and franchise taxes imposed by the 
                  United States of America, Mexico, or by any state, local, or 
                  foreign government, or any subdivision, agency, or other 
                  similar


                                     - 8 -

                  Person of the United States, Mexico or any such government; 
                  and (b) any interest, fines, penalties, assessments, or 
                  additions to taxes resulting from, attributable to, or 
                  incurred in connection with any Tax or any contest, dispute,
                  or refund thereof;

        (ccc)     "TAX RETURNS" shall mean any report, return, or statement 
                  required to be supplied to a taxing authority in connection 
                  with Taxes;

        (ddd)     "TIME OF CLOSING" means 10:00 a.m. (New York time) on the 
                  Closing Date or such other time as the Purchaser and the 
                  Sellers may agree upon;

        (eee)     "U.S. GAAP" means United States generally accepted accounting
                  principles; and

        (fff)     "U.S. TAX CODE" means the United States Internal Revenue Code 
                  of 1986, as amended.

1.2               CONSTRUCTION. In this Agreement, unless the context 
requires otherwise or is otherwise expressly provided:

         (a)      words denoting the singular include the plural and vice versa 
                  and words denoting any gender include all genders;

         (b)      the words "including", "include", and "includes" shall mean
                  "including without limitation", "include, without limitation"
                  and "includes, without limitation", respectively;

         (c)      all references to Articles or sections are references to 
                  Articles of sections of this Agreement;

         (d)      any reference to a statute shall mean the statute in force as
                  at the date hereof and any regulation in force thereunder,
                  unless otherwise expressly provided;

         (e)      the use of headings is for convenience of reference only and
                  shall not affect the construction of this Agreement;

         (f)      when calculating the period of time within which or following
                  which any act is to be done or step taken, the date which is
                  the reference day in calculating such period shall be
                  excluded. If the last day of such period is not a Business
                  Day, the period shall end on the next Business Day;

         (g)      all dollar amounts are expressed in U.S. funds; and

         (h)      any tender of documents or money under this Agreement may be
                  made upon the parties or their respective counsel and money
                  may be tendered by bank draft or wire transfer drawn upon a
                  U.S. or Canadian chartered bank or by negotiable cheque
                  payable in U.S. funds and certified by a U.S. or Canadian
                  chartered bank.


                                     - 9 -


1.3       SCHEDULES AND EXHIBITS.  The following are the schedules and 
exhibits annexed hereto and incorporated by reference herein and deemed to be 
part of this Agreement:


                                          
          Schedule 1.1(r)           -        December 31 Financial Statements
          Schedule 1.1(ad)          -        Intellectual Property Agreement
          Schedule 1.1(au)          -        Purchased Shares
          Schedule 1.1(ba)          -        September 30 Balance Sheet
          Schedule 2.1              -        Sellers and Purchased Shares
          Schedule 3.4(c)           -        Form of Opinion of Counsel to the Sellers
          Schedule 3.5(c)           -        Form of Opinion of Counsel to the Purchaser
          Schedule 3.5(d)           -        Form of Opinion of General Counsel to the Purchaser
          Schedule 4.1(b)(i)A       -        Regulatory Approvals
          Schedule 4.1(b)(iii)      -        Sellers' or Corporations' Required Filings
          Schedule 4.1(f)           -        Exceptions to GAAP in Preparation of Financial 
                                             Statements
          Schedule 4.1(h)           -        Liabilities
          Schedule 4.1(i)           -        Tax Matters
          Schedule 4.1(j)           -        Material Changes
          Schedule 4.1(k)           -        Encumbrances on Title to Assets
          Schedule 4.1(n)           -        Leased Real Property
          Schedule 4.1(m)           -        Location of Records
          Schedule 4.1(o)           -        Owned Real Property
          Schedule 4.1(q)           -        Litigation
          Schedule 4.1(r)           -        Material Contracts
          Schedule 4.1(s)           -        Employment Matters
          Schedule 4.1(t)           -        Benefit plans
          Schedule 4.1(u)           -        Insurance
          Schedule 4.1(v)           -        Intellectual property
          Schedule 4.1(x)           -        Non arm's-length contracts
          Schedule 4.1(z)           -        Environmental Matters
          Schedule 4.1(ac)          -        Year 2000 Compliance
          Schedule 4.2(b)(iii)      -        Purchaser's Required Filings
          Schedule 6.1(c)           -        Consents
          Schedule 7.1              -        Basis of Presentation of Closing Date Balance Sheet
          Schedule 9.13             -        Mediation Procedures


                ARTICLE 2 - PURCHASE AND SALE OF PURCHASED SHARES

2.1       PURCHASE AND SALE OF PURCHASED SHARES.  Subject to the terms and 
conditions of this Agreement, at the Time of Closing, each of the Sellers 
shall sell to the Purchaser and the Purchaser shall purchase from such 
Seller, free and clear of all Liens, the Purchased Shares set out opposite 
such Seller's name on Schedule 2.1.



                                     - 10 -


2.2       PURCHASE PRICE AND ALLOCATION.  The purchase price payable by the 
Purchaser for the Purchased Shares shall be U.S.$109,000,000.00 (the 
"Estimated Purchase Price"), subject to adjustment, if any, in accordance 
with Article 7 (the Estimated Purchase Price as adjusted is the "Purchase 
Price") and shall be allocated initially among the Purchased Shares as 
follows, subject to final adjustment:



            PURCHASED            ESTIMATED             PERCENTAGE OF
             SHARES            PURCHASE PRICE          PURCHASE PRICE
          -------------       ----------------        ----------------
                                                
             Azerty             $93,800,000                86.1%

               ID                $6,000,000                 5.5%

              APSS               $1,200,000                 1.1%

          Azerty Mexico          $8,000,000                 7.3%
                              ----------------        ----------------
              Total             $109,000,000                100%



                        ARTICLE 3 - CLOSING ARRANGEMENTS

3.1       PLACE OF CLOSING.  The closing shall take place at the Time of 
Closing at the offices of Goodman Phillips & Vineberg, 430 Park Avenue, 10th 
Floor, New York, New York, 10022, or at such other place and time as may be 
agreed upon by the Purchaser and the Sellers.

3.2       DELIVERY OF CERTIFICATES.  The Sellers shall transfer and deliver 
to the Purchaser at the Time of Closing share certificates of each 
Corporation representing, in the aggregate, the Purchased Shares duly 
endorsed in blank for transfer, or accompanied by irrevocable stock transfer 
powers of attorney duly executed in blank (provided that in the case of 
Azerty Mexico, certificates shall be duly endorsed not in blank but in the 
name of the Purchaser), and shall take such steps as shall be necessary to 
cause the Corporations to issue to the Purchaser share certificates 
representing the Purchased Shares.

3.3       PAYMENT OF THE PURCHASE PRICE.  The Estimated Purchase Price shall 
be paid and satisfied by the Purchaser at the Time of Closing in full by 
certified cheque, bank draft or wire transfer in such amount made payable to 
the Sellers, or as they may otherwise direct in writing. Any additional 
amount on account of the Purchase Price shall be paid by the Purchaser in 
accordance with Article 7 and any reduced amount shall be paid by the Sellers 
in accordance with Article 7. All of such amount shall be payable to ACSC 
except for that portion of the Estimated Purchase Price that is allocated to 
Azerty Mexico pursuant to Section 2.2, which such portion shall be payable to 
ACI.

3.4       OTHER CLOSING DELIVERIES OF SELLERS.  On the Closing Date, the 
Sellers shall deliver to the Purchaser the following:

     (a)  the officer's certificates described in section 6.1(a);




                                     - 11 -

      (b) Certificates of Good Standing or their equivalents, issued by the 
          respective jurisdictions of organization of each of the 
          Corporations, dated as close to the Closing Date as is reasonably 
          possible; and

      (c) an opinion of Goodman Phillips & Vineberg, counsel to the Sellers, 
          and of Rubio Villegas y Associados, S.C., Mexican counsel to the 
          Sellers, substantially in the form attached hereto as Schedule 
          3.4(c)

3.5       OTHER CLOSING DELIVERIES OF PURCHASER.  On the Closing Date, the 
Purchaser shall deliver to the Sellers the following:

     (a)  the officer's certificates described in section 6.2(a);

     (b)  Certificates of Good Standing of the Purchaser and United issued by 
          the Secretaries of State of the States of Illinois and Delaware 
          respectively and dated as close to the Closing Date as is 
          reasonably possible;

     (c)  an opinion of Weil, Gotshal & Manges LLP, counsel to the Purchaser 
          and United, substantially in the form attached hereto as Schedule 
          3.5(c); and

     (d)  an opinion of Otis H. Halleen, General Counsel to the Purchaser and 
          United, substantially in the form attached hereto as Schedule 
          3.5(d).

                   ARTICLE 4 - REPRESENTATIONS AND WARRANTIES

4.1       REPRESENTATIONS AND WARRANTIES OF THE SELLERS. The Sellers jointly 
and severally represent and warrant to the Purchaser (and acknowledge that the
Purchaser is relying on such representations and warranties in completing the
transactions contemplated herein) that:

     (a)  CORPORATE - Each of the Corporations is a corporation duly 
          organized and validly existing under the laws of its jurisdiction 
          of incorporation and has the requisite corporate power and 
          authority to own its properties and assets and to carry on that 
          portion of the Business as currently conducted by it. Each of the 
          Corporations is duly qualified or admitted to do business and is in 
          good standing as a foreign corporation in all jurisdictions in 
          which the ownership, use or leasing of its assets or the conduct of 
          its business makes such qualification or admission necessary, 
          except where the failure to be so qualified or admitted and in good 
          standing, individually or in the aggregate, would not have a 
          Material Adverse Effect. Schedule 4.1(a) sets forth each 
          jurisdiction in which the Corporations are qualified or admitted to 
          do business as a foreign corporation. Each of the Sellers is a 
          corporation duly organized and validly existing under the laws of 
          its jurisdiction and has the requisite corporate power and 
          authority to enter into this Agreement, the Side Agreement and the 
          Intellectual Property Agreement and perform its obligations 
          hereunder and thereunder. Except as set forth in Schedule 4.1(a), 
          none of the Corporations owns, 



                                     - 12 -


          of record or beneficially, directly or indirectly, any equity or 
          other proprietary interest, or right to acquire any such interests, 
          contingent or otherwise, in any Person.

     (b)  ENFORCEABILITY - The execution and delivery of this Agreement, the 
          Side Agreement and the Intellectual Property Agreement by each of 
          the Sellers and the performance by such Seller of its obligations 
          hereunder and thereunder have been (or, in the case of ACSC, on the 
          Closing Date will be) duly and validly authorized by all necessary 
          corporate and stockholder action on its part, (such stockholder 
          approval being required only in respect of Azerty Mexico).  Each of 
          this Agreement, the Side Agreement and the Intellectual Property 
          Agreement constitutes a legal, valid, and binding obligation of the 
          Sellers, enforceable against each of them in accordance with its 
          terms (subject to bankruptcy, reorganization, insolvency, 
          moratorium, and other laws relating to or affecting creditors' 
          rights generally and subject to the availability of equitable 
          remedies). The execution and delivery of this Agreement, the Side 
          Agreement and the Intellectual Property Agreement by the Sellers, 
          the consummation of the transactions contemplated hereby and 
          thereby and the fulfilment by the Sellers of the terms, conditions 
          and provisions hereof and thereof will not:

            (i) contravene or violate or result in the breach in any 
                material respect (with or without the giving of notice or 
                lapse of time, or both) or acceleration of any obligations of 
                the Sellers or the Corporations under:


                (A)  any Laws applicable to the Sellers or the Corporations 
                     except for the Regulatory Approvals set forth on 
                     Schedule 4.1(b)(i)(A);

                (B)  any judgment, order, writ, injunction or decree of any 
                     court which is applicable to the Sellers or the 
                     Corporations;

                (C)  the articles, by-laws or any resolutions of the Sellers 
                     or the Corporations or any amendments thereto or 
                     restatements thereof; or

                (D)  the provisions of any Material Contract to which any 
                     Seller or Corporation is a party or by which any of them 
                     are bound;

           (ii) result in the creation or imposition of any Lien upon any of 
                the assets of the Corporations or any of them which, 
                individually or in the aggregate, would have a Material 
                Adverse Effect; or

          (iii) require any of the Sellers or the Corporations to obtain any 
                consent, approval or action of, or make any filings with or 
                give any notice to, any Person, except:

                (A)  the filing of a premerger notification report under the 
                     HART-SCOTT-



                                     - 13 -



                     RODINO ANTITRUST IMPROVEMENTS ACT OF 1976, as amended 
                     (the "HSR Act"),

                (B)  as disclosed in Schedule 4.1(b)(iii), and

                (C)  those the failure of which to obtain, make or give, 
                     individually or in the aggregate, would not have a 
                     Material Adverse Effect or a material adverse effect on 
                     the validity or enforceability of this Agreement, the 
                     Side Agreement or the Intellectual Property Agreement or 
                     on the ability of the Sellers to perform their 
                     respective obligations under this Agreement, the Side 
                     Agreement or the Intellectual Property Agreement.

     (c)  LICENCES, PERMITS AND AUTHORIZATIONS - The Corporations have 
          conducted the Business in compliance with, and the Corporations 
          hold all licenses, permits and authorizations (except for 
          Environmental Permits which are dealt with in Section 4.1(z)) 
          necessary for the lawful operation of the Business, pursuant to all 
          applicable statutes and regulations of all Authorities having 
          jurisdiction over the Corporations or over any part of the 
          Business, except where the absence of such license, permit or 
          authorization would not have a Material Adverse Effect.

     (d)  CAPITALIZATION - The authorized, issued and outstanding capital 
          stock of each of the Corporations are as follows:



            Corporation         Authorized Share Capital          Number of Issued and        Shareholder
                                                                   Outstanding Shares
          ----------------    ----------------------------    ----------------------------   --------------
                                                                                    
          Azerty              1,000 common shares             542.857 common shares          ACSC
                              125 preferred shares

          ID                  1,000 common shares             100 common shares              ACSC
                              125 preferred shares

          APSS                1,000 common shares             100 common shares              ACSC
                              125 preferred shares

          Azerty Mexico       100 Class 1 shares              99 Class 1 shares              ACI
                              unlimited Class 2 shares        990 Class 2 shares

                                                              1 Class 1 share                Azerty
                                                              10 Class 2 shares


          All of the issued and outstanding shares of capital stock of each 
          of the Corporations are owned, beneficially and of record, by the 
          Persons and in the amounts shown above and have been validly 
          issued, are fully paid and non-assessable and have not been issued 
          in violation of any pre-emptive or similar rights. Save and except 
          for inter-company indebtedness to be capitalized prior to or at 
          Closing, there are no outstanding securities convertible into or 
          exchangeable or exercisable for any shares of the capital stock of 
          any Corporation, nor does any Corporation have outstanding any 
          rights to subscribe for or to purchase, or any options or warrants 
          for the purchase of, or any agreements providing for the issuance 
          of, any shares of its 



                                     - 14 -


          capital stock or any securities convertible into or exchangeable or 
          exercisable for any shares of its capital stock. The Sellers shall 
          cause any and all shares of capital stock in the Corporations that 
          result from the capitalization of inter-company indebtedness and 
          that are issued to the Sellers after the date hereof to be included 
          in the Purchased Shares. There are no bonds, debentures, notes or 
          other indebtedness of any of the Corporations having the right to 
          vote on any matters on which holders of the capital stock of any of 
          the Corporations may vote. On the Closing Date, the Purchased 
          Shares shall constitute all the issued and outstanding shares in 
          the capital stock of each Corporation, save and except for Azerty 
          Mexico, of which all of the issued and outstanding shares not 
          included in the Purchased Shares are owned by Azerty, free and 
          clear of all Liens. On the Closing Date, there will be no 
          outstanding stock appreciation, phantom stock or similar rights 
          based on the equity appreciation of any of the Corporations. On the 
          Closing Date, there will be no voting trusts, proxies or other 
          agreements with respect to voting any capital stock of any 
          corporation.

     (e)  OWNERSHIP OF SHARES - Each of the Sellers is (and will at the Time 
          of Closing be) the sole legal and beneficial owners of the 
          Purchased Shares, as set forth in Section 4.1(d), free and clear of 
          any liens, charges, encumbrances or rights of others (other than 
          the rights of the Purchaser hereunder).  There is no contract, 
          option or other right of another binding upon or which at any time 
          in the future may become binding upon the Sellers or the 
          Corporations or any of them, to sell, transfer, assign, pledge, 
          charge, mortgage or in any other way dispose of or encumber any of 
          the Purchased Shares, other than pursuant to this Agreement.

     (f)  FINANCIAL STATEMENTS - The Sellers (i) have delivered to the 
          Purchaser copies of the December 31 Financial Statements, and (ii) 
          will, prior to the Closing Date, deliver to the Purchaser (x) 
          copies of the audited combined (including the elimination of all 
          significant inter-company transactions and balances) balance sheets 
          of the Corporations as of December 31, 1995 and 1996, together with 
          the related audited combined (including the elimination of all 
          significant inter-company transactions and balances) statements of 
          income and cash flows for the fiscal years ended December 31, 1995 
          and 1996, and the notes and schedules thereto, accompanied by the 
          report thereon of the applicable firm of independent public 
          accountants (the "1995-1996 Financial Statements" and, collectively 
          with the December 31 Financial Statements, the "Financial 
          Statements") and (y) whatever is necessary for the December 31 
          Financial Statements to comply with clause (D) below of this 
          Section 4.1(f).  The Financial Statements, including the notes and 
          schedules thereto, (A) were or will be prepared in accordance with 
          GAAP throughout the periods covered thereby, except as otherwise 
          disclosed on Schedule 4.1(f), (B) present or will present fairly in 
          all material respects the combined financial position, results of 
          operations and changes in cash flows of the Corporations as of such 
          dates and for the periods then ended, (C) have or will have been 
          audited in accordance with generally accepted auditing standards in 
          Canada, and (D) include or will include all schedules necessary to 
          conform such Financial Statements with U.S. GAAP and the 
          information required 



                                     - 15 -


          by Regulation S-X promulgated under the UNITED STATES SECURITIES 
          ACT of 1933 and the SECURITIES EXCHANGE ACT of 1934, each as 
          amended to the date hereof.  The Purchaser acknowledges and accepts 
          the changes in respect of policies respecting reserves in 
          connection with the December 31, 1997 Balance Sheet and the 
          December 31, 1997 Financial Statements, as such specified reserves 
          are described in Schedule 7.1.

     (g)  INVENTORY - The inventory of the Corporations consists only of 
          items of an age, quality and quantity useful or saleable, as of the 
          Closing Date, in the ordinary course of business of the 
          Corporations, and net of reserves as described in Schedule 7.1.  
          For greater certainty, the Sellers are not responsible for any 
          diminution of saleable inventory after the Closing Date in excess 
          of such reserves. The inventories reflected on the December 31 
          Balance Sheet are, and the inventories on the Closing Date Balance 
          Sheet will be, valued at the lower of cost or net realizable value 
          (determined on a first-in, first-out (FIFO) basis).

     (h)  ABSENCE OF UNDISCLOSED LIABILITIES - Except to the extent reflected 
          or reserved against in the December 31 Financial Statements 
          (including disclosure in the notes thereto) or incurred subsequent 
          to December 31, 1997 and disclosed in Schedule 4.1(h) and except 
          for normal trade debt payable and other operating liabilities 
          (including, without limitation, overshipments from suppliers) in 
          the ordinary and normal course of business consistent with past 
          practices, which shall be dealt with in accordance with Section 7.1 
          and Schedule 7.1, none of the Corporations has any outstanding 
          indebtedness or any liabilities or obligations (whether accrued, 
          absolute, contingent or otherwise) nor any outstanding commitments 
          or obligations of any kind whether or not such obligations or 
          commitments are presently considered liabilities of any of the 
          Corporations under GAAP that would render the December 31 Financial 
          Statements materially and adversely incomplete or inaccurate.

     (i)  TAX MATTERS -

            (i) Each of the Corporations has duly filed all Tax Returns it 
                was required to file, and has paid (or there has been paid on 
                its behalf) all Taxes that are due or adequate provision has 
                been made by the Corporations in the December 31 Balance 
                Sheet in accordance with GAAP for any Taxes due and unpaid at 
                the date of the December 31 Balance Sheet, or for the payment 
                of any Tax instalments due in respect of the current taxation 
                year of the Corporations.  Each of the Corporations has made 
                (or there has been made on its behalf) all required estimated 
                or advance Tax payments sufficient to avoid any underpayment 
                penalties.  Except to the extent reflected or reserved 
                against in the December 31 Balance Sheet or as will be 
                reflected or reserved against on the Closing Date Balance 
                Sheet (with respect to Taxes that became due after December 
                31, 1997 and relate to a taxable period ending at or on the 
                Closing Date or are allocable to such date by Section 
                8.9(f)), none of the Corporations is liable for any Taxes. 
                Except as disclosed in Schedule 4.1(i) 



                                     - 16 -


                the Tax Returns of each of the Corporations and of each 
                affiliated, combined or consolidated group which includes or 
                has included any of the Corporations have not been audited or 
                examined by a taxing authority and the statute of limitations 
                for all periods through the respective periods specified in 
                Schedule 4.1(i) has not expired. None of the Corporations has 
                effected any unauthorized accounting method changes.  Except 
                as disclosed in Schedule 4.1(i), there are no actions, suits, 
                assessments, audits, investigations, claims or other 
                proceedings pending or, to the knowledge of the Sellers, 
                threatened against any of the Corporations with respect to 
                any Taxes;

           (ii) Each of the Corporations has on a timely basis filed (or 
                there has been filed on its behalf) all Tax returns required 
                to be filed by it, or with respect to, it. To the knowledge 
                of the Sellers, no such Tax Return contains any material 
                misstatement or omitted any statement of any material fact 
                that should have been included therein or is otherwise not 
                correct in all material respects;

          (iii) Each of the Corporations has withheld and remitted to the 
                proper taxing authority, or where permitted by law provided 
                security for, on a timely basis and in a form required under 
                the appropriate Tax legislation, all Taxes required to be 
                withheld or remitted in connection with any amounts paid or 
                owing to any employee, creditor, independent contractor or 
                other third party;

           (iv) Except as provided in Schedule 4.1(i), there is no contract, 
                agreement, plan or arrangement covering any person that, 
                individually or collectively, could give rise to the payment 
                of any amount that would not be deductible by any of the 
                Corporations by reason of Section 28OG of the U.S. Tax Code;

            (v) Except as provided in Schedule 4.1(i), there are no 
                outstanding agreements, waivers, or arrangements extending 
                the statutory period of limitation applicable to any claim 
                for, or the period for the collection or assessment of, Taxes 
                due from or with respect to any of the Corporations for any 
                taxable period, and no power of attorney granted by or with 
                respect to any of the Corporations with respect to Taxes is 
                currently in force.  No closing agreement pursuant to Section 
                7121 of the U.S. Tax Code (or any predecessor provision) or 
                any similar provision of any state, local, or non-U.S. law 
                has been entered into by or with respect to any of the 
                Corporations.  There are no advance pricing agreements 
                pursuant to Section 482 of the U.S. Tax Code (or any similar 
                or analogous law) relating to the Corporations and policies 
                regarding the transfer or sale of goods between the 
                Corporations are set forth in Schedule 4.1(i);

           (vi) None of the Corporations has agreed (and no agreement has 
                been made on any of the Corporations' behalf) to make any 
                adjustment pursuant to Section 



                                     - 17 -


                481(a) of the U.S. Tax Code (or any predecessor provision) by 
                reason of any change in any accounting method, and there is 
                no application pending with any taxing authority requesting 
                permission for any changes in any accounting method of any of 
                the Corporations.  No election under Section 338 of the U.S. 
                Tax Code has been made or filed by or with respect to any of 
                the Corporations.  No consent to the application of Section 
                341(f)(2) of the U.S. Tax Code (or any predecessor provision) 
                has been made or filed by or with respect to any of the 
                Corporations or any of their assets;

          (vii) ACSC is not a "foreign person" within the meaning of Section 
                1445(b)(2) of the U.S. Tax Code. None of the Corporations is 
                or has been during the preceding five years a United States 
                real property holding corporation for purposes of Section 
                1445(b)(3) of the U.S. Tax Code. No withholding Taxes are 
                applicable to the payment of the Purchase Price hereunder;

         (viii) There are no deferred gains with respect to intercompany 
                transactions for purposes of United-States Treasury 
                Regulation Section 1.1502-13 (and any predecessor regulation) 
                with respect to Azerty, ID or APSS;

           (ix) Each of Azerty, ID and APSS is a member (and will be a member 
                through the Closing Date) of an affiliated group for purposes 
                of Section 1504(a) of the U.S. Tax Code which properly files 
                consolidated United States federal income Tax Returns; and

            (x) Schedule 4.1(i) accurately sets forth any net operating loss, 
                capital loss or credit carryforwards with respect to each of 
                the Corporations from the most recently filed Tax Returns of 
                the Corporations.

     (j)  ABSENCE OF CHANGES - Except as contemplated by this Agreement or 
          as set forth on Schedule 4.1(j), since December 31, 1997 or as 
          otherwise disclosed to the Purchaser in writing (except that no 
          such disclosure shall be required to the extent such disclosure 
          would breach any Law including, without limitation, the HSR Act), 
          the Business has been carried on in the ordinary course and there 
          has not been:

            (i) any damage, destruction, loss, labour trouble or any other 
                event, (whether or not covered by insurance), which has 
                occurred and which would have a Material Adverse Effect;

           (ii) any issuance, sale or disposition by the Corporations of any 
                of their respective shares of capital stock (other than as 
                contemplated by this Agreement) or any grant of options, 
                warrants or preemptive or other rights to acquire (including 
                upon conversion or exercise) any shares of its capital stock, 
                but subject to the issuance of shares on the capitalization 
                of inter-company indebtedness;



                                     - 18 -


          (iii) any material Lien created on any of the assets of the 
                Corporations, other than those created in the ordinary course 
                of business consistent with past practices;

           (iv) any sale, transfer or conveyance of any material assets used 
                or useful in the Business other than in the ordinary course 
                of business consistent with past practices;

            (v) any transaction or arrangement under which any of the 
                Corporations paid, loaned or advanced any amount to or in 
                respect of, or sold, transferred or leased any of its assets 
                or any services to (1) the Sellers, (2) any officer, director 
                or employee of any of the Corporations, (3) any affiliate of 
                the Corporations, or any officer, director of employee of any 
                such affiliate, or (4) any business or other Person in which 
                any of the Sellers, the Corporations or any such officer, 
                director, employee or affiliate has a material interest (or 
                agreed or committed to do any of the foregoing), except (A) 
                payments of salaries, wages and benefits to officers, 
                directors and employees of the Corporations in the ordinary 
                course of business consistent with past practices, (B) 
                advances made to, or reimbursements of, officers, directors 
                and employees of the Corporations in reasonable amounts in 
                the ordinary course of business consistent with company 
                policies and past practices, and (C) transactions made 
                pursuant to agreements with affiliates on terms no more 
                favourable than would be afforded to third parties;

           (vi) any commitments or agreements for capital expenditures 
                involving an amount, in the aggregate, in excess of $50,000;

          (vii) any material amendment, modification or termination of any 
                Material Contract, except for terminations in accordance with 
                the terms thereof;

         (viii) any capital investment in, loan to or acquisition of the 
                securities or assets of any Person involving more than 
                $100,000;

           (ix) any change made or authorized in any of their respective 
                certificates of incorporation or other organizational 
                instruments or by laws;

            (x) the execution of any agreement with any director, officer or 
                employee of any of the Corporations, providing for his or her 
                employment or other services, or any increase in compensation 
                or in severance or termination benefits payable or to become 
                payable by any Corporation to its directors, officers or 
                employees, or any increase in benefits under any collective 
                bargaining agreements or in benefits under any Plans, except 
                in any case in the ordinary course of business consistent 
                with past practices and except as contemplated by the Side 
                Agreement;



                                     - 19 -


           (xi) any change by any of the Corporations in its financial or tax 
                accounting principles, practices or methods, except insofar 
                as required by GAAP or applicable Law or as is contemplated 
                in Section 7.1 or Schedule 7.1;

          (xii) any declaration, setting aside or payment of any dividend 
                (whether in cash, stock or property) in respect of any of the 
                Corporations' capital stock or equity interests but subject 
                to the ability to repay or capitalize inter-company 
                indebtedness;

         (xiii) any redemption, repurchase or retirement by any Corporation 
                of any of such Corporation's capital stock or equity 
                interests;

          (xiv) any payment, prepayment, discharge or satisfaction by the 
                Corporations of any Debt or material Lien other than Debts or 
                Liens that were paid, discharged or satisfied in the ordinary 
                course of business consistent with past practices but subject 
                to the ability to repay or capitalize inter-company 
                indebtedness;

           (xv) any cancellation of any liability or indebtedness owed to the 
                Corporations by any other Person except substantially in 
                accordance with past practices; or

          (xvi) any commitment to do any of the foregoing except as 
                contemplated by this Agreement.

      (k) TITLE TO PROPERTIES - Except as disclosed in the December 31, 1997 
          Balance Sheet or in Schedule 4.1(k), the Corporations have good and 
          marketable title to all property and assets, including rights under 
          leases, owned by the Corporations (except as since transferred, 
          sold or otherwise disposed of in the ordinary course of business 
          consistent with past practices), free and clear of all Liens except:

            (i) statutory Liens securing payments not yet delinquent or 
                other statutory Liens, the validity of which are being 
                contested in good faith by appropriate actions;

           (ii) purchase money Liens arising in the ordinary course;

          (iii) Liens for taxes not yet delinquent;

           (iv) Liens reflected in the Financial Statements (which have not 
                been discharged); or

            (v) Liens which in the aggregate do not materially detract from 
                the value or materially impair the present and continued use 
                of the properties or assets subject thereto in the usual and 
                normal conduct of the Business,



                                     - 20 -


                (the Liens referred to in clauses (i) through (v) being 
                "Permitted Liens").

     (l)  ACCOUNTS RECEIVABLE - The accounts receivable reflected on the 
          December 31 Balance Sheet are, and the accounts and notes 
          receivable of the Corporations created from and after December 31, 
          1997 will be, free and clear of any Liens (except for Permitted 
          Liens). Subject to the treatment of reserves for accounts 
          receivable as described in Schedule 7.1, all accounts receivable of 
          the Corporations which will be outstanding on the Closing Date:

            (i) will have arisen from bona fide sales of goods or services in 
                the ordinary course of business and consistent with past 
                practices;

           (ii) are accurately and fairly reflected on the December 31 
                Balance Sheet or, with respect to accounts receivable created 
                after December 31, 1997 and through the date of this 
                Agreement, will have been accurately and fairly reflected in 
                the books and records of the Corporation and will be 
                accurately reflected on the Closing Date Balance Sheet; and

          (iii) are fully collectible, net of reserves, as at the Closing 
                Date to the knowledge of the Sellers. For greater certainty, 
                absent such knowledge the Sellers are not responsible for bad 
                debts or uncollectible accounts following the Closing Date to 
                the extent that they exceed such reserves.

     (m)  BOOKS AND RECORDS - Except for the financial records in respect of 
          Azerty Mexico maintained by Zarate, Vega y Assoc., S.C. (a Mexican 
          accounting firm), which records shall, if so requested by the 
          Purchaser prior to Closing, be delivered to Azerty Mexico at the 
          Time of Closing, and except as set forth in Schedule 4.1(m), all of 
          the records, data, information, information services, systems and 
          controls maintained, operated or used by the Corporations or in 
          connection with the conduct, accounting or administration of the 
          Business (including all means of access thereto and therefrom) are 
          located at the Locations and are under the exclusive ownership or 
          direct control of the Corporations.

     (n)  LEASES OF REAL PROPERTY -

            (i) Other than the leases and subleases referred to in Schedule 
                4.1(n) which expire on the dates set out in Schedule 4.1(n), 
                none of the Corporations is a party to or bound by any lease 
                or sublease relating to Real Property.

           (ii) Neither any of the Corporations nor, to the knowledge of the 
                Sellers, any other party thereto, is in default or breach in 
                any material respect of any lease or sublease referred to in 
                Schedule 4.1(n).

     (o)  REAL PROPERTY - Except as set out in Schedule 4.1(o), none of the 
          Corporations owns any Real Property or, except for the leases 
          referred to in Schedule 4.1(n), any 



                                     - 21 -


          interest in Real Property.  Schedule 4.1(o) sets out the registered 
          owner and the municipal address and full legal description of each 
          such property.  Except as set out in Schedule 4.1(o), on the 
          Closing Date the Corporations will have good and marketable title 
          in fee simple to all of such Real Property free and clear of all 
          Liens (other than Permitted Liens).  Except as set out in Schedule 
          4.1(o), none of the Corporations has granted to any Person any 
          right of first refusal, right of first opportunity, option or 
          similar rights to purchase such Real Property or any interest 
          therein or part thereof.  To the knowledge of the Sellers, except 
          as set out in Schedule 4.1(o), there is no material violation of 
          any health, safety, zoning, subdivision or building statute or 
          ordinance affecting such Real Property.

     (p)  CONDITION OF ASSETS - Subject to the usual maintenance and 
          replacement practices of the Corporations, all material fixed 
          assets of the Corporations used in or in connection with the 
          Business or any part thereof are in good condition, repair and 
          (where applicable) proper working order, having regard to the use 
          and age thereof, subject to ordinary wear and tear. All of the 
          assets that are used in the Business as conducted in the ordinary 
          course consistent with past practice are owned or leased by the 
          Corporations, free and clear of all Liens except for Permitted 
          Liens.  The costs of such assets are adequately reflected in the 
          Financial Statements in accordance with GAAP.

     (q)  LITIGATION - Except as disclosed in Schedule 4.1(q), there is no 
          suit, action, dispute, civil or criminal litigation, claim, 
          arbitration or legal, administrative or other proceeding or 
          governmental investigation, including appeals and applications for 
          review (collectively, "Proceedings"), pending or, to the knowledge 
          of the Sellers, threatened against the Corporations or any of them 
          or affecting any of their respective assets or properties or the 
          Business, which if determined adversely to the Corporations, or any 
          of them, would have a Material Adverse Effect or would affect the 
          validity or enforceability of this Agreement with respect to the 
          Sellers or the Corporations, or any of them, or the consummation of 
          the transactions contemplated hereby.  There are no facts or 
          circumstances known to the Sellers which are likely to give rise to 
          any such Proceedings. Except as disclosed in Schedule 4.1(q), there 
          is not presently outstanding against any Corporation any judgment, 
          execution, decree, injunction, rule or order of any court, 
          Authority, administrative agency or arbitrator that would have a 
          Material Adverse Effect.

     (r)  MATERIAL CONTRACTS - Schedule 4.1(r) sets forth a true and complete 
          list of each Material Contract to which any of the Corporations is 
          a party.  Each of the Material Contracts set forth or required to 
          be set forth on such schedule to which any of the Corporations is a 
          party is a valid and binding obligation of the Corporation which is 
          a party thereto, and is in full force and effect without amendment 
          or modification.  Each of the Corporations and, to the knowledge of 
          the Sellers, each other party to such Material Contracts, has 
          performed in all material respects the obligations required to be 
          performed by it under such Material Contracts and is not (with or 
          without the lapse of time or the giving of notice or both) in 
          breach or default in any



                                    - 22 -


          material respect thereunder.  Schedule 4.1(r) identifies whether 
          the consent of the other party or parties to any such Material 
          Contract is required in order for such Material Contract to 
          continue in full force and effect upon the consummation of the 
          transactions contemplated by this Agreement.

     (s)  EMPLOYMENT MATTERS -

            (i) The Purchaser has been provided with a complete and accurate 
                list in all material respects of all employees of each 
                Corporation as at December 31, 1997 (collectively, the 
                "Employees"), their respective positions, dates of hire with 
                such Corporation, or any predecessors of such Corporation, 
                current salaries, benefits and other remunerations, and dates 
                of last salary increases, and indicates which employees are 
                parties to a written agreement of employment (including 
                confidentiality and non-competition agreements).  No other 
                employees, other than senior executive employees of the 
                Sellers having general oversight obligations over the 
                Corporations, are utilized in the operations of the 
                Corporations.

           (ii) Save and except as disclosed in Schedule 4.1(s) or in the 
                Side Agreement, none of the Corporations or the Sellers is a 
                party to any agreements with past or present employees, 
                agents or independent contractors of the Corporations 
                providing for annual salary and bonuses or other payments in 
                excess of $100,000.  There are no oral contracts of 
                employment entered into with any employees employed by the 
                Corporations which are not terminable in accordance with 
                applicable Law and except as set forth in Schedule 4.1(s) or 
                in such Side Agreement, none of the Corporations has entered 
                into any agreements with such employees with respect to the 
                termination of employment.

          (iii) Save and except in respect of the Office Products Long Term 
                Incentive Plan (but subject to the Sellers' indemnification 
                responsibility in respect thereof set forth in Section 
                8.1(e)) and subject to the severance obligations that are in 
                place as described in Schedule 4.1(s) or in the Side 
                Agreement, all liabilities in respect of employees have or 
                shall have been accrued for to the Closing Date, including 
                income tax and any other employment related legislation, 
                accrued wages, Taxes, salaries, commissions, vacation pay and 
                employee benefit and post-retirement and post-employment 
                benefit plan payments.

           (iv) None of the Corporations has made any agreements, whether 
                directly or indirectly, with any labour union, employee 
                association or other similar entity or made commitments to or 
                conducted negotiations with any labour union or employee 
                association or similar entity with respect to any future 
                agreements.  No trade union, employee association or other 
                similar entity has any bargaining rights acquired by either 
                certification or voluntary 



                                    - 23 -


                recognition with respect to the employees of the 
                Corporations.  None of the Corporations is aware of any 
                current attempts to organize or establish any other labour 
                union, employee association or other similar entity.

            (v) All vacation pay, bonuses (other than bonuses under the 
                Office Products Long Term Incentive Plan, but subject to the 
                Sellers' indemnification responsibility in respect thereof 
                set forth in Section 8.1(e)), commissions and other 
                emoluments relating to the Employees are accurately reflected 
                in all material respects and have been accrued in the 
                financial records of each Corporation in each case in 
                accordance with U.S. GAAP. There are no post-retirement 
                benefits offered by the Corporations.

           (vi) Save and except in respect of the Office Products Long Term 
                Incentive Plan (but subject to the Sellers' indemnification 
                responsibility in respect thereof set forth in Section 
                8.1(e)) and subject to the Side Agreement, there are no 
                agreements with any Employee wherein compensation payable to 
                such Employee is triggered by the transactions contemplated 
                by this Agreement and payable by any Corporation.

     (t)  PENSION AND BENEFIT MATTERS - To the knowledge of the Sellers:

            (i) Schedule 4.1(t) contains a complete and accurate list of all 
                Plans. Except as disclosed in Schedule 4.1(t), no Plan has 
                been terminated or partially terminated and all Plans are 
                still in force and effect.

           (ii) A correct and complete copy of each of the following 
                documents have been provided to the Purchaser with respect to 
                each Plan, as applicable: the Plan document; the most recent 
                actuarial valuation; the most recent summary Plan 
                description; and the most recent determination letter from 
                the Internal Revenue Service or other Pension Authority.

          (iii) Each Plan intended to qualify under Section 401 of the U.S. 
                Tax Code, and each related trust intended to qualify under 
                Section 501 of the U.S. Tax Code, are designed to be in 
                compliance with the applicable requirements of the U.S. Tax 
                Code.

           (iv) Each Plan intended to qualify under Section 401 of the U.S. 
                Tax Code and each related trust intended to qualify under 
                Section 501 of the U.S. Tax Code has received a determination 
                letter from the Internal Revenue Service that the Plan and 
                related trust are designed in accordance with applicable 
                sections of the U.S. Tax Code, or has pending with the 
                Internal Revenue Service an application for such a 
                determination.

            (v) The Corporations have made all material filings in connection 
                with the Plans required by the Pension Authorities and 
                Pension Legislation. The Plans and 



                                    - 24 -


                all investments held by such Plans comply in all material 
                respects with all applicable Pension Legislation and have 
                been maintained and administered in compliance with the Plan 
                Terms.

           (vi) All required contributions or premiums to be paid under the 
                Plans have been fully paid to the date hereof in a timely 
                fashion in accordance with the applicable Pension Legislation 
                and Plan Terms. No unfunded liability, solvency deficiency, 
                unpaid special payment or experience deficiency, whether due 
                or not exists with respect to the Plans.

          (vii) There are no outstanding liabilities under the U.S. Tax Code 
                or other Tax liabilities with respect to the Plans.

         (viii) There are no outstanding actions or claims with respect to 
                the Plans, other than claims for benefits submitted by 
                members or beneficiaries in the normal course; there are no 
                requests for documents; and there is no litigation, legal 
                action, suit, investigation, claim, counterclaim or 
                proceeding pending or, to the knowledge of the Sellers, 
                threatened against or affecting any Plan which could have a 
                Material Adverse Effect on the Sellers, any Corporation or on 
                any Plan maintained as of the Closing Date.

           (ix) Except as disclosed in Schedule 4.1(t), there is not now and 
                on the Closing Date there will not be any benefit plans 
                established by or for the Corporations for any of their 
                respective employees.

     (u)  INSURANCE - The Corporations have all of their assets, property and 
          undertaking and the Business insured against loss or damage by all 
          insurable hazards or risks on a replacement cost basis and such 
          insurance coverage will be continued in full force and effect (with 
          all premiums paid) up to and including the Closing Date. Schedule 
          4.1(u) sets forth a true and complete list of all insurance 
          policies maintained by or on behalf of the Corporations, together 
          with a description of the annual premiums thereon paid by the 
          Corporations in respect of any policies that are not blanket 
          policies issued to ACI.  To the knowledge of the Sellers, no event 
          has occurred which limits or impairs the rights of any of the 
          Corporations under any such insurance policies.  Excluding 
          insurance policies that have expired and been replaced in the 
          ordinary course of business, no insurance policy has been cancelled 
          by any of the Corporations within the two years prior to the date 
          of this Agreement.

     (v)  INTELLECTUAL PROPERTY - Schedule 4.1(v) lists all material 
          inventions, patents, trade-marks, copyrights, service marks, 
          industrial designs, business names and other intellectual property, 
          whether or not registered, that are owned by or licensed to each 
          Corporation (collectively, the "Intellectual Property") and, with 
          respect to licensed Intellectual Property, lists the owner thereof. 
          The Intellectual Property is free and clear of any claims, 
          encumbrances or charges.  Except as disclosed in Schedule 4.1(v), 
          there has been no material infringement or violation of any 



                                    - 25 -


          Corporation's rights in and to the Intellectual Property, nor any 
          claim of adverse ownership, invalidity or other opposition to or 
          conflict with any of the Intellectual Property which in any case 
          would have a Material Adverse Effect. To the knowledge of the 
          Sellers, none of the Corporations has infringed or violated or is 
          currently infringing or violating any rights under any material 
          inventions, patents, trademarks, copyrights, service marks, 
          industrial designs, business names or any other intellectual 
          property.  The Sellers in operating the Business have used the 
          "Four Square logo" in the Business in the United States for a 
          period of time in excess of 10 years and none of the Corporations 
          has received any notice of infringement from the registered owner 
          thereof; other than providing such representation and warranty as 
          to no such notice having been received, the Sellers make no 
          representation and warranty in respect of such logo.

     (w)  COMPLIANCE WITH LAWS - Each of the Corporations is in compliance in 
          all material respects with, and will at the Closing Date have filed 
          all reports or returns required under, all Laws applicable to it 
          (except for Environmental Laws, which are covered in Section 
          4.1(z)), except where non-compliance would not have a Material 
          Adverse Effect.

     (x)  CONTRACTS WITH AFFILIATES - Except as set forth in Schedule 4.1(x), 
          there are no existing Material Contracts to which any Corporation 
          is a party in which any of the Sellers, any director or officer of 
          such Corporation or any other Person not dealing at arm's length 
          with the Sellers, the Corporations or any of their respective 
          directors or officers has an interest, whether directly or 
          indirectly, including arrangements for the payment of management or 
          consulting fees. Schedule 4.1(x) sets forth a description of all 
          management, consulting, services and other similar arrangements of 
          any kind between any of the Corporations, on the one hand, and the 
          Sellers or any of their respective affiliates, on the other hand, 
          (but excluding the purchase and sale of inventory between the 
          Corporations, the Seller and their respective affiliates) including 
          a description of the services provided and the amount of payments 
          or other consideration provided by either party in respect of such 
          arrangements for the 1997 year.

     (y)  CORPORATE RECORDS - The minute books of each Corporation contain, 
          and will contain at the Closing Date, accurate and complete minutes 
          of all meetings and resolutions of its directors and shareholders.

     (z)  ENVIRONMENTAL MATTERS - Except as disclosed in Schedule 4.1(z):

            (i) The Business has been and is being carried on in compliance 
                with all applicable Environmental Laws, Environmental Orders 
                and Environmental Permits, except where non-compliance would 
                not have a Material Adverse Effect. The Sellers do not know 
                of any fact which would give rise to a notice of 
                non-compliance with any Environmental Laws or Environmental 
                Orders except where non-compliance would not have a Material 
                Adverse Effect.



                                    - 26 -


           (ii) The Corporations possess all Environmental Permits necessary 
                for their continued operations, except for those 
                Environmental Permits, the absence of which would not result 
                in the inability of the Corporations to operate the Business 
                as it is presently conducted. Schedule 4.1(z) contains a list 
                of all of the material Environmental Permits held by the 
                Corporations. All such Environmental Permits are valid in all 
                material respects.

          (iii) None of the Corporations has ever been cited, found liable, 
                convicted or otherwise held responsible for any material 
                non-compliance with any Environmental Law in connection with 
                the Business or received any written notice of any Remedial 
                Requirement in connection with the Real Property and, to the 
                knowledge of the Sellers, no facts, circumstances or 
                conditions exist that would reasonably be expected to give 
                rise to a Remedial Requirement.

           (iv) The Corporations have maintained and continue to maintain in 
                all material respects environmental records relating to the 
                Business in the manner and for the time periods required by 
                Environmental Laws.

            (v) No judicial or administrative proceedings are pending or, to 
                the knowledge of the Sellers, threatened against the 
                Corporations or the Sellers relating to the Business or the 
                Real Property that allege the violation of or seek to impose 
                liability pursuant to any Environmental Law and, there are no 
                investigations pending or, to the knowledge of the Sellers, 
                threatened against the Real Property or the Sellers or the 
                Corporations with respect to the Business, which in any case 
                could give rise to Remedial Requirements.

           (vi) Other than in compliance with Environmental Laws, there is 
                not now, nor, to the knowledge of the Sellers, has there been 
                in the past, on, in or under any of the Real Property owned, 
                leased or used by any of the Corporations (A) any 
                asbestos-containing materials, (B) any polychlorinated 
                biphenyls; or (C) any radioactive substances.

          (vii) To the knowledge of Sellers, there exists no facts, 
                circumstances or conditions relating to the Business or the 
                Real Property that could reasonably be expected to give rise 
                to material liabilities under Environmental Laws or an 
                obligation to perform Remedial Requirements.

         (viii) The Sellers have provided the Purchaser with copies of all 
                environmentally related audits, assessments, studies, 
                reports, analyses, and results of investigations of the Real 
                Property or the Business that are in the Sellers' possession, 
                custody or control.

          The Purchaser and United acknowledge that they have reviewed the 
          executive 



                                    - 27 -


          summaries of the Phase I environmental reports relating 
          to work performed on their behalf in respect of the Real Property 
          and that there is nothing contained therein which has led either 
          the Purchaser or United at this time to conclude either (i) that 
          any work needs to be performed in connection with the Real Property 
          in order for the Sellers' representation and warranty contained in 
          Section 4.1(z) to be true and correct or (ii) that there is 
          presently a Remedial Requirement entitling the Purchaser to 
          indemnification pursuant to Section 8.1(d); provided, however, that 
          notwithstanding the foregoing, the Sellers acknowledge and agree 
          that (i) the executive summaries of the Phase I assessments by 
          their terms do not purport to be complete in all material respects, 
          (ii) as of the date of this Agreement, neither United nor the 
          Purchaser has received the final completed  Phase I assessments 
          relating to the Real Property, and (iii) certain potential 
          asbestos-containing building materials and adjacent property 
          underground storage tank removals are referenced in such executive 
          summaries, and nothing contained in this paragraph shall otherwise 
          limit the Purchaser's right to indemnification relating to the 
          matters described in such summaries or for Remedial Requirements 
          that may be outside the knowledge of the Purchaser or United as of 
          the date of this Agreement or that may hereinafter become necessary.

     (aa) BUSINESS - Save and except for the systems storage division and 
          paper operations of Axidata and its subsidiaries, ACI does not 
          carry on any business that competes with or is similar to the 
          Business in the United States or Mexico other than through the 
          Corporations.

     (bb) FINDER'S OR BROKER'S FEES - Other than Nesbitt Burns Inc. (whose 
          fees and expenses shall be paid by and be the sole obligation of 
          the Sellers), no broker or finder has acted directly or indirectly 
          for or on behalf of the Sellers or the Corporations, nor have the 
          Sellers or the Corporations incurred any other obligation to pay 
          any brokerage, finder's fee or other commission in connection with 
          the transactions contemplated by this Agreement.

     (cc) YEAR 2000 COMPLIANCE - Except as set forth on Schedule 4.1(ac), to 
          the knowledge of Sellers (after due inquiry of the IT Director of 
          Azerty), all of the computer software programs used in the Business 
          in the United States and Mexico operate accurately in the manner in 
          which they were intended with regard to date-related operations 
          when given a valid date containing century, year, month and day.  
          For the purposes of this Section 4.1(ac), the accurate operation of 
          the software shall require (i) that calculations using dates must 
          execute using a four digit year; (ii) that all functions, including 
          but not limited to entry, inquiry, maintenance, storage, update and 
          transmission of information, must support four digit year 
          processing; (iii) that interfaces and reports must support four 
          digit year processing; (iv) successful translation into year 2000 
          with the correct system date (e.g. 1/1/2000) without human 
          intervention; (v) processing with a four digit year after 
          transition to and beyond the year 2000 without human intervention; 
          and (vi) providing correct results in forward and backward date 
          calculations spanning century boundaries.  The 



                                    - 28 -


          Sellers make no representation and warranty in respect of the 
          hardware used in the Business in the United States or Mexico.

     (dd) BUSINESS PURCHASE PRACTICES - To the knowledge of Sellers, the 
          Corporations have not in the last three years sold any inventory of 
          the Business that was stolen or counterfeit. To the extent that the 
          Corporations acquire inventory for resale from sources other than 
          the manufacturer, such alternate sourcing arrangements do not cause 
          the Corporations to be in breach of their agreements with vendors.

4.2       REPRESENTATIONS AND WARRANTIES OF THE PURCHASER.  The Purchaser and 
United hereby jointly and severally represent and warrant to the Sellers (and 
acknowledges that the Sellers are relying on the representations and 
warranties in completing the transactions contemplated hereby) that:

     (a)  CORPORATE - Each of the Purchaser and United is a corporation duly 
          organized and validly existing under the laws of its jurisdiction 
          of incorporation and has the requisite corporate power and 
          authority to enter into this Agreement, the Side Agreement and the 
          Intellectual Property Agreement and to perform its respective 
          obligations hereunder and thereunder.

     (b)  ENFORCEABILITY - The execution and delivery of this Agreement, the 
          Side Agreement and the Intellectual Property Agreement by the 
          Purchaser and by United and the performance by the Purchaser and by 
          United of its respective obligations hereunder and thereunder have 
          been duly and validly authorized by all necessary corporate and 
          stockholder action on the part of the Purchaser and United.  Each 
          of this Agreement, the Side Agreement and the Intellectual Property 
          Agreement constitutes a legal, valid and binding obligation of the 
          Purchaser and United, enforceable against the Purchaser and United 
          in accordance with its terms (subject to bankruptcy, 
          reorganization, insolvency, moratorium, and other laws relating to 
          or affecting creditors' rights generally and subject to the 
          availability of equitable remedies).  The execution and delivery of 
          this Agreement, the Side Agreement and the Intellectual Property 
          Agreement by the Purchaser and United, the consummation of the 
          transactions contemplated hereby and thereby and the fulfilment by 
          the Purchaser and United of the terms, conditions and provisions 
          hereof and thereof will not:

            (i) contravene or violate or result in the breach in any material 
                respect (with or without the giving of notice or lapse of 
                time, or both) or acceleration of any obligations of the 
                Purchaser or United under:

                (A)  any Laws applicable to the Purchaser or United, subject 
                     to receipt of any required Regulatory Approvals;

                (B)  any judgment, order, writ, injunction or decree of any 
                     court which is presently applicable to the Purchaser or 
                     United;



                                    - 29 -


                (C)  the articles, by-laws or any resolutions of the 
                     Purchaser or United or any amendments thereto or 
                     restatements thereof; or

                (D)  the provisions of any material agreement to which the 
                     Purchaser or United is a party or by which either the 
                     Purchaser or United is bound that would have a material 
                     adverse effect on the Purchaser's or United's ability to 
                     consummate its respective obligations hereunder (except 
                     for those under which consent shall be obtained at or 
                     prior to Closing).

           (ii) result in the creation or imposition of any Lien upon any of 
                the assets of the Purchaser or United, which, individually or 
                in the aggregate, would have a material adverse effect on the 
                Purchaser's or United's ability to consummate its respective 
                obligations hereunder; or

          (iii) require the Purchaser or United to obtain any consent, 
                approval, or action of, or make any filings with or give any 
                notice to, any Person, except:

                (A)  the filing of a premerger notification report under the 
                     HSR Act,

                (B)  as disclosed in Schedule 4.2(b)(iii), and

                (C)  those which the failure to obtain, make, or give, 
                     individually or in the aggregate, would not have a 
                     material adverse effect on the validity or 
                     enforceability of this Agreement or on the ability of 
                     the Purchaser or United to perform its respective 
                     obligations under this Agreement.

4.3       SURVIVAL OF SELLERS' REPRESENTATIONS AND WARRANTIES. The 
representations and warranties of the Sellers contained in this Agreement 
(and, if applicable, in the Side Agreement and the Intellectual Property 
Agreement) shall survive the Closing for the benefit of the Purchaser as 
follows:

     (a)  as to the representations and warranties contained in section 
          4.1(i) and section 4.1(t)(iii) and (vii), until the date following 
          expiration of the applicable Tax statute of limitations with 
          respect to the relevant taxable period (including all periods of 
          extension, whether automatic or permissive);

     (b)  as to the representations and warranties contained in sections 
          4.1(d) and 4.1(e), indefinitely;

     (c)  as to the representations and warranties contained in section 
          4.1(z), for a period of five years, unless a BONA FIDE notice of a 
          claim shall have been made in writing before the expiry of that 
          period, in which case the representation and warranty to 



                                    - 30 -


          which such notice applies shall survive in respect of that claim 
          until the final determination or settlement of the claim;

     (d)  as to all other matters, for a period of two years unless a BONA 
          FIDE notice of a specific claim shall have been given in writing 
          before the expiry of that period, in which case the representation 
          and warranty to which such notice applies shall survive in respect 
          of that claim until the final determination or settlement of that 
          claim.

4.4       SURVIVAL OF PURCHASER'S AND UNITED'S REPRESENTATIONS AND 
WARRANTIES.  The representations and warranties of the Purchaser and United 
contained in this Agreement (and if applicable, in the Side Agreement and 
the Intellectual Property Agreement) shall survive the Closing for the 
benefit of the Sellers for a period of two years, unless a BONA FIDE notice 
of specific claim shall have been made in writing before the expiry of that 
period, in which case the representation and warranty to which such notice 
applies shall survive in respect of that claim until the final determination 
or settlement of that claim.

              ARTICLE 5 - COVENANTS OF THE PARTIES PRIOR TO CLOSING

5.1       OPERATIONS BEFORE CLOSING. Except as otherwise contemplated or 
permitted by this Agreement (and except to the extent that Sellers reasonably 
believe upon advice of counsel that compliance with the following would 
breach applicable Law including, without limitation, the HSR Act), during the 
period from the date of this Agreement to the Time of Closing, the Sellers 
shall, and shall cause the Corporations to:

     (a)  promote the interest and maintain the goodwill of the Corporations, 
          and of all persons having business relations with the Corporations 
          and shall continue to operate the Business in the ordinary course 
          consistent with past practice, including paying and satisfying all 
          Debts and obligations of the Corporations as such Debts and 
          obligations mature;

     (b)  not, without the prior written consent of the Purchaser, perform or 
          make any material act or decision to enter into any contract, 
          commitment or transaction not in the ordinary course of business 
          and which would have a Material Adverse Effect, or which would 
          constitute a breach of the covenants, representations or warranties 
          of the Sellers contained in this Agreement or which would cause 
          such covenants, representations and warranties to be untrue in any 
          material respect at the Time of Closing, including without 
          limitation:

            (i) entering into commitments, acquiring or initiating new 
                businesses or undertakings or assuming any material 
                commitment or obligation (by written agreement or otherwise) 
                or selling, encumbering or otherwise disposing or 
                distributing any material assets except in the ordinary 
                course of business consistent with past practice.  For 
                purposes hereof, a commitment, obligation or asset will be 
                deemed to be material if, among other things, it 



                                    - 31 -


                alone has a value in excess of $50,000 or all such 
                commitments, obligations and assets have a value of more than 
                $500,000 in the aggregate;

           (ii) entering into or amending any employment, labour, consulting 
                or service contracts or Plan except in the ordinary course of 
                business consistent with past practice;

          (iii) terminating any employment agreements or giving notice of 
                termination except in the ordinary course of business 
                consistent with past practice;

           (iv) initiating any litigation to which the Corporations may be or 
                may become a party;

            (v) entering into any transaction with any Person or Persons with 
                whom they are not acting at arm's length;

           (vi) incurring any additional Debt (other than current liabilities 
                incurred in the normal course of operations consistent with 
                past practise) or guarantees of such Debt which, in the 
                aggregate, exceeds $500,000;

          (vii) amending, revising, renewing or terminating any material 
                lease, licence or any other Material Contract to which the 
                Corporations or any of them may be a party or which may 
                affect the Business; or

         (viii) authorizing, agreeing or otherwise becoming committed  to do 
                any of the foregoing,

     (c)  continue to maintain in full force and effect all policies of 
          insurance (or replacement policies) currently in effect in respect 
          of the Business and give all notices and present all claims under 
          all policies of insurance in a due and timely fashion;

     (d)  use their commercially reasonable efforts to ensure that there will 
          not be any material adverse change in the condition (financial or 
          otherwise) or operations of the business or assets of the 
          Corporations other than changes in the ordinary and normal course 
          of business;

     (e)  ensure that, save and except for capitalizing inter-company loans, 
          none of the Corporations will:

            (i) issue, sell or declare a dividend or make a distribution 
                (whether in cash, stock or other property) with respect to 
                any shares in its capital stock, or issue or sell any 
                warrants, bonds, debentures or other securities of the 
                Corporations or issue, grant or deliver any right, option or 
                other commitment for the issuance of any such other 
                securities;



                                    - 32 -


           (ii) suffer a loss, or waive any rights of substantial value, or 
                enter into any commitment or transaction, in all cases not in 
                the ordinary and normal course of business consistent with 
                past practice;

          (iii) amend or change or take any action to amend or change its 
                constituent documents or by-laws;

           (iv) merge or consolidate with any other Person;

            (v) make any settlement or compromise any Tax liability, change 
                any Tax election or make any new Tax election or Tax method 
                of accounting;

           (vi) except as required by GAAP or applicable Law, or except as 
                contemplated by this Agreement, change any of the material 
                accounting principles or practices used by it; or

          (vii) authorize or agree or otherwise become committed to do any of 
                the foregoing; and

     (f)  shall cause the Corporations to pay all accounts payable and 
          collect all accounts receivable in a timely manner in the ordinary 
          course of business consistent with past practice.

5.2       APPROVALS AND CONSENTS.

     (a)  The Sellers shall forthwith use commercially reasonable efforts to 
obtain as of the Time of Closing all Consents and Regulatory Approvals.

     (b)  The Purchaser shall forthwith file the notices, take all steps 
reasonably necessary and in the Purchaser's control and use commercially 
reasonable efforts to obtain as of the Time of Closing all Regulatory 
Approvals and all consents disclosed in Schedule 4.2(b)(iii).

     (c)  The fees and expenses incurred by each party in connection with 
obtaining any Consents and Regulatory Approvals necessary for the 
consummation of the transactions contemplated by this Agreement shall be the 
sole responsibility of the party incurring such fees and expenses, except 
that the filing fees and expenses (excluding legal fees but including the 
fees and expenses of any other consultants or experts mutually engaged to 
assist in the preparation, negotiation or defense of the filing under the HSR 
Act) incurred in connection with the filing of a premerger notification under 
the HSR Act shall be borne equally between the Sellers, on the one hand, and 
the Purchaser, on the other hand.

5.3       COMPETITIVE INFORMATION. The Sellers represent and warrant that 
save and except for the Not Yet Delivered Competitive Information (within the 
meaning of Section 5.6), the Sellers have made available all documents which 
the Sellers view as containing Competitive Information to Lucas and Ernst & 
Young LLP ("E&Y"). The Purchaser acknowledges that Lucas and E&Y have



                                    - 33 -


reviewed such Competitive Information and that such Competitive Information 
is subject, in the case of Lucas, to the terms of the confidentiality 
agreement dated as of August 5, 1997 between ACI and Lucas and, in the case 
of E&Y, to a confidentiality agreement dated May 5, 1997 between the 
Purchaser and ACI and which requires the Purchaser's representatives 
including E&Y to maintain confidentiality (collectively the "Confidentiality 
Agreements"). Notwithstanding the provisions of the Confidentiality 
Agreements, each of Lucas and E&Y shall be permitted to discuss and provide 
the substance of its analysis of the Competitive Information (including the 
Not Yet Delivered Competitive Information) to the Purchaser, on a "no names" 
basis and in compliance with all applicable Law (including, without 
limitation, the HSR ACT) as advised by counsel, subject to the prior review 
of the Sellers of any specific Competitive Information (including the Not Yet 
Delivered Competitive Information) to be shared by Lucas or E&Y and further 
subject to the consent of the Sellers, acting reasonably, as to whether to 
allow such information to be shared prior to the receipt of all required 
Regulatory Approvals. Once all required Regulatory Approvals have been 
obtained, the Sellers shall grant access to and a reasonable opportunity to 
review the Competitive Information (including the Not Yet Delivered 
Competitive Information) only to (i) Randall W. Larrimore, Daniel H. Bushell, 
Steven R. Schwarz and Mike Rowsey (together with those of their reports who 
have specialized expertise in the area under consideration and whose input is 
reasonably required by such named individuals in respect of such area under 
consideration), (ii) Frederick B. Hegi, Jr., Daniel J. Good and Gary G. 
Miller, being members of the Executive Committee of United and (iii) Otis H. 
Halleen, General Counsel of United and the Purchaser (all of such named 
individuals and such reports are collectively the "Specified Individuals") on 
behalf of the Purchaser for a period of five Business Days prior to the 
Closing Date. The Purchaser shall cause such the Specified Individuals not to 
share such Competitive Information with any other employee, officer, director 
or shareholder of the Purchaser or any other Person prior to Closing.

5.4       CONFIDENTIAL INFORMATION. The Purchaser acknowledges that the 
Sellers and the Corporations have delivered to the Purchaser and to Lucas and 
E&Y a list of material documents of the Corporations which have not been 
disclosed to the Purchaser or its representatives on the grounds that the 
Sellers view them as containing Confidential Information (save and except for 
Confidential Information included in the Not Yet Delivered Competitive 
Information). In the event that the Not Yet Delivered Competitive Information 
contains Confidential Information, the Sellers shall deliver to the Purchaser 
a revised list of Confidential Information, on or before February 13, 1998, 
at the same time as it delivers the Not Yet Delivered Competitive 
Information. The Sellers in preparing such list jointly and severally 
represent and warrant that they have disclosed such information regarding the 
subject matter and substance of such agreements as in their opinion could 
reasonably be disclosed without violating any applicable confidentiality 
covenant. Upon the request of the Purchaser for a document set out in such 
list, the Sellers shall use commercially reasonable efforts to obtain the 
consent of the third party in favour of whom the Confidential Information 
covenant operates to disclose such Confidential Information to the Purchaser, 
and the Specified Individuals on behalf of the Purchaser shall have a period 
of five Business Days prior to the Closing Date to review all such 
Confidential Information. The Purchaser shall cause such Specified 
Individuals not to share such Confidential Information with any other 
employee, officer, director or shareholder of the Purchaser or any other 
Person prior to Closing.

5.5       CONSULTANT OPINIONS. The Purchaser and United jointly and severally
represent 



                                    - 34 -


and warrant to the Sellers that Lucas and E&Y have advised the Purchaser that 
they have reviewed and analyzed the Competitive Information (other than the 
Not Yet Delivered Competitive Information) and that, based on such review and 
analysis by Lucas and E&Y, the Purchaser and United are of the view (subject 
to Section 6.1(f)) that nothing contained therein would constitute or result 
in a Material Adverse Effect or would constitute or result in a material 
impediment to the integration of the Business into the business of the 
Purchaser or the prospects of such combined business.

5.6       NEW COMPETITIVE INFORMATION. Notwithstanding anything to the 
contrary contained in this Agreement, Sellers advise that they have not to 
date provided to E&Y or to Lucas certain agreements included in the 
Competitive Information (the "Not Yet Delivered Competitive Information"). 
Sellers covenant to deliver to Lucas all agreements included in the Not Yet 
Delivered Competitive Information not later than February 13, 1998 as well as 
copies thereof with the Competitive Information removed therefrom to Weil, 
Gotshal & Manges LLP. Not later than February 20, 1998, the Purchaser and 
United shall determine whether they can confirm in writing to the Sellers 
that Lucas has reviewed and analyzed the Not Yet Delivered Competitive 
Information and that, based on such review and analysis by Lucas, the 
Purchaser and United are of the view (subject to Section 6.1(f)) that nothing 
contained therein would constitute or result in a Material Adverse Effect or 
would constitute or result in a material impediment to the integration of the 
Business into the business of the Purchaser or the prospects of such combined 
business. The Purchaser and United shall act reasonably in reaching such 
determination. Should the Purchaser and United not provide such confirmation 
by such date, their only remedy shall be to terminate the Agreement and the 
Side Letter with no party being liable to any other party in respect thereof.

5.7       TRANSITIONAL SERVICES. The Sellers have proposed a form of 
transitional services agreement in respect of the services of Bruce 
McGroarty. The Purchaser and United shall have until February 20, 1998 to 
settle the form of such transitional services agreement with the Sellers and 
agree that they shall negotiate in good faith the terms thereof. If the 
parties are unable to settle such transitional services agreement by such 
date, the services of Bruce McGroarty shall not be provided to the Purchaser 
or the Corporations following the Closing Date. The parties acknowledge that 
neither the execution and delivery of such a transitional services agreement 
nor the provision by the Sellers to the Purchaser or the Corporations of the 
services of Bruce McGroarty are a condition precedent to Closing.

               ARTICLE 6 - CONDITIONS PRECEDENT TO THE PERFORMANCE
            BY THE PARTIES OF THEIR OBLIGATIONS UNDER THIS AGREEMENT

6.1       CONDITIONS FOR THE BENEFIT OF THE PURCHASER. The obligation of the 
Purchaser to complete the purchase of the Purchased Shares hereunder shall be 
subject to the satisfaction of, or compliance with, at or before the Time of 
Closing, each of the following conditions (each of which is hereby 
acknowledged to be inserted for the exclusive benefit of the Purchaser):

     (a)  REPRESENTATIONS AND WARRANTIES - All representations and warranties 
          of the Sellers made in or pursuant to this Agreement (and, if 
          applicable, the Side Agreement) shall be true and correct in all 
          material respects with the same force and effect as if made 



                                    - 35 -


          at and as of the Time of Closing, and the Sellers shall have 
          delivered to the Purchaser at the Time of Closing a certificate 
          dated the Closing Date, duly executed by a senior officer of each 
          of the Sellers confirming to his or her knowledge, information and 
          belief, the truth and accuracy of such representations and 
          warranties at the Time of Closing.

     (b)  PERFORMANCE OF OBLIGATIONS - The Sellers shall have performed or 
          complied with, in all material respects, all of their obligations, 
          covenants and agreements in this Agreement and the Side Agreement 
          which are to be performed or complied with by the Sellers at or 
          prior to the Time of Closing.

     (c)  APPROVALS AND CONSENTS -

            (i) All Regulatory Approvals required in connection with the 
                completion of any of the transactions contemplated by this 
                Agreement, the Side Agreement or the Intellectual Property 
                Agreement shall have been obtained and complied with on or 
                before the Time of Closing.

           (ii) All Consents, being those described in Schedule 6.1(c), shall 
                have been obtained.

          (iii) The Purchaser and the Sellers and any other Person in such 
                party's group required in connection with the transactions 
                contemplated by this Agreement to file a Notification and 
                Report Form with the United States Department of Justice and 
                the Federal Trade Commission pursuant to the HSR Act shall 
                have made such filing.   All applicable waiting periods with 
                respect to such filing shall have expired or been terminated, 
                and no actions shall have been instituted challenging or 
                seeking to enjoin the consummation of the transactions 
                contemplated by this Agreement.

     (d)  NO ACTION TO RESTRAIN - No action or proceeding shall be pending or 
          threatened by any Authority or any other Person to restrain or 
          prohibit the completion of the transactions contemplated by this 
          Agreement.

     (e)  NO MATERIAL ADVERSE CHANGE - Except as has been specified in this 
          Agreement, since the date of this Agreement there shall not have 
          been any change in the business of the Corporations or any other 
          event or circumstance that would have a Material Adverse Effect.

     (f)  DUE DILIGENCE -  All Confidential Information and Competitive 
          Information shall have been provided to the Purchaser and its 
          representatives for review in accordance with the terms of this 
          Agreement.  In addition, the Purchaser shall have confirmed, acting 
          reasonably, that nothing contained in the Competitive Information 
          or Confidential Information would constitute or result in a 
          Material Adverse Effect or would constitute or result in a material 
          impediment to the integration of the Business 



                                    - 36 -


          into the business of the Purchaser or the prospects of such 
          combined businesses, having regard to the following provisions of 
          this Section 6.1(f).  For purposes of the foregoing, the Purchaser 
          acknowledges that, as described in Section 5.3 and Section 5.5, 
          certain of its representatives already have had access to the 
          Competitive Information and have analyzed it and given the 
          Purchaser their views as to the condition in this Section 6.1(f) 
          having been satisfied and that the Purchaser's review of that 
          Competitive Information shall be confirmatory only of the 
          completeness of such review and analysis. Should the Purchaser wish 
          not to close the transactions in reliance on this Section 6.1(f), 
          it shall provide the Sellers with a written statement explaining 
          (i) with respect to the Competitive Information; why it does not 
          agree with the analysis of Lucas and E&Y, and/or (ii) with respect 
          to Confidential Information, the reasons that the Purchaser, 
          following its and its representatives' review and analysis of such 
          Confidential Information, acting reasonably has concluded that 
          information contained in such Confidential Information would 
          constitute or result in a Material Adverse Effect or would 
          constitute or result in a material impediment to the integration of 
          the Business with the business of the Purchaser or the prospects of 
          such combined businesses, and each such statement shall contain 
          sufficient detail in order that the Sellers shall have the 
          opportunity to challenge the Purchaser's conclusion. The Purchaser 
          shall also promptly provide to the Sellers (or, to the extent 
          required by applicable Law, to a representative designated by the 
          Sellers and to be bound by a confidentiality agreement in form and 
          substance similar to the Confidentiality Agreement executed and 
          delivered by Lucas) full access to the information used, analysis 
          conducted and all reports prepared by Lucas and E&Y and all 
          information and analysis completed by the Purchaser that form the 
          basis of the Purchaser's conclusion that it is entitled not to 
          close in reliance on the conditions contained in this Section 
          6.1(f).

     (g)  INTELLECTUAL PROPERTY AGREEMENT - The Intellectual Property 
          Agreement shall have been executed and delivered by ACI and 
          Eurozerty B.V. (and , if necessary, ACSC).

     (h)  CLOSING DELIVERIES - The Purchaser shall have received all stock 
          certificates, instruments and other documents required to be 
          delivered by the Sellers pursuant to Article 3.

     (i)  FINANCING - The Purchaser shall have received the proceeds of the 
          financing from such Person who agrees to finance the acquisition by 
          the Purchaser of the Purchased Shares (the "Purchaser's Lender"), 
          provided that, notwithstanding the foregoing, if the Purchaser has 
          not received such proceeds, this provision shall apply so as to 
          entitle the Purchaser not to close only if the Purchaser fails to 
          secure financing for the transaction as a result of any of the 
          following:  (i) the Purchaser's Lender becomes aware after the date 
          hereof of any information or other matter that is not known to the 
          Purchaser as at the date hereof and in the reasonable judgment of 
          Purchaser's Lender has resulted or could result in any change in 
          the business of the Corporations that would have a Material Adverse 
          Effect;  (ii) there shall have been 



                                    - 37 -


          any litigation commenced or threatened which challenges the 
          financing or which, if successful, would in the reasonable judgment 
          of the Purchaser's Lender have a Material Adverse Effect; (iii) 
          other than in the ordinary course of business, there shall have 
          been a material increase in the liabilities of the Corporations, 
          liquidated or contingent, whether or not reflected on the Closing 
          Date Balance Sheet, or a material decrease in their assets; (iv) 
          there shall have been a suspension in the trading in any equity 
          securities of United Stationers Inc. by the Securities and Exchange 
          Commission or the Nasdaq National Market (other than any such 
          suspension initiated at the request of or otherwise caused by 
          actions of United Stationers Inc.) or trading in securities 
          generally shall have been suspended on any principal United States 
          stock exchange; (v) there shall have declared a banking moratorium 
          by the United States or any state banking authority; or (vi) there 
          shall have occurred a material disruption of or material adverse 
          change in financial, banking or capital market conditions that 
          materially impairs the ability of the Purchaser's Lender to 
          syndicate the applicable credit facilities.

     (j)  INTERCOMPANY INDEBTEDNESS - All intercompany indebtedness 
          (including deferred tax accounts as shown on internal management 
          reporting statements) between either of the Sellers or any of their 
          affiliates, on the one hand, and any of the Corporations, on the 
          other hand, shall have been paid in full to affiliates or 
          capitalized as additional shares issued only to one or both of the 
          Sellers and included in the Purchased Shares and the Sellers and 
          their respective affiliates, as applicable, shall have executed and 
          delivered to Purchaser a release in respect thereof in form and 
          substance reasonably satisfactory to Purchaser.

     (k)  TAX MATTERS - On the Closing Date, Sellers shall cause the 
          termination and cancellation of any duties and obligations of each 
          of the Corporations under any tax sharing, tax allocation, tax 
          indemnity or other similar agreement and shall cause the release of 
          each of the Corporations from any liabilities with respect to any 
          such agreement.  Purchaser shall have received reasonably 
          satisfactory substantiation that no withholding Taxes are 
          applicable to any payments under this Agreement (including 
          affidavits pursuant to Section 1445(b)(2) or Section 1445(b)(3) of 
          the U.S. Tax Code).

6.2       CONDITIONS FOR THE BENEFIT OF THE SELLERS. The obligation of the 
Sellers to complete the sale of the Purchased Shares hereunder shall be 
subject to the satisfaction of, or compliance with, at or before the Time of 
Closing, each of the following conditions (each of which is hereby 
acknowledged to be inserted for the exclusive benefit of the Sellers):

     (a)  REPRESENTATIONS AND WARRANTIES - All representations and warranties 
          that the Purchaser and United made in or pursuant to this Agreement 
          (and, if applicable, the Side Agreement) shall be true and correct 
          in all material respects with the same force and effect as if made 
          at and as of the Time of Closing, and each of the Purchaser and 
          United shall have delivered to the Sellers at the Time of Closing 
          its certificate dated the Closing Date, duly executed by a senior 
          officer of the Purchaser 



                                    - 38 -


          or United, as applicable, confirming to his or her knowledge, 
          information and belief, the truth and accuracy of such 
          representations and warranties at the Time of Closing.

     (b)  PERFORMANCE OF OBLIGATIONS - The Purchaser and United shall have 
          performed or complied with, in all material respects all of its 
          obligations, covenants and agreements in this Agreement and the 
          Side Agreement which are to be performed or complied with by the 
          Purchaser or United at or prior to the Time of Closing.

     (c)  NO ACTION TO RESTRAIN - No action or proceeding shall be pending or 
          threatened by any Authority or any other Person to restrain or 
          prohibit the completion of the transactions contemplated by this 
          Agreement.

     (d)  INTELLECTUAL PROPERTY AGREEMENT - The Intellectual Property 
          Agreement shall have been executed and delivered by the Purchaser.

     (e)  CLOSING DELIVERIES - The Sellers shall have received the Purchase 
          Price and other documents required to be delivered by the Purchaser 
          pursuant to Article 3.

6.3       TERMINATION BY PURCHASER. If any of the conditions set forth in 
section 6.1 have not been fulfilled, performed or satisfied at or prior to 
the Closing Date, the Purchaser may, by written notice to the Sellers 
terminate all of its obligations hereunder and the Purchaser and United shall 
be released from all their obligations under this Agreement. Any of such 
conditions may be waived in whole or in part by the Purchaser by instrument 
in writing given to the Sellers without prejudice to any of the Purchaser's 
rights of termination in the event of non-performance of any other condition, 
obligation or covenant in whole or in part. Notwithstanding anything in this 
section 6.3 to the contrary, the Purchaser shall not have the right to 
terminate this Agreement in accordance with this section 6.3 in the event 
that the Purchaser's or United's material breach of any provision hereof 
causes or results in the failure of any of the conditions set forth in 
section 6.1.

6.4       TERMINATION BY SELLERS. If any of the conditions set forth in 
section 6.2 have not been fulfilled, performed or satisfied at or prior to 
the Closing, the Sellers may, by written notice to the Purchaser, terminate 
all of their obligations hereunder and the Sellers shall be released from all 
their obligations under this Agreement. Any of such conditions may be waived 
in whole or in part by the Sellers by instrument in writing to the Purchaser, 
without prejudice to any of the Sellers' rights of termination in the event 
of non-performance of any other condition, obligation or covenant in whole or 
in part. Notwithstanding anything in this section 6.4 to the contrary, the 
Sellers shall not have the right to terminate this Agreement in accordance 
with this section 6.4 in the event that the Sellers' material breach of any 
provision hereof causes or results in the failure of any of the conditions 
set forth in section 6.2.



                                    - 39 -


             ARTICLE 7 - COVENANTS OF THE PARTIES FOLLOWING CLOSING

7.1       CLOSING DATE BALANCE SHEET.

     (a)  The parties acknowledge that the Estimated Purchase Price was 
established based on the Net Tangible Assets reflected on the September 30 
Balance Sheet. Within 60 days following the Closing, the Purchaser on behalf 
of the Corporations shall prepare and deliver to each of the Sellers the 
combined balance sheet including each of the Corporations audited by Price 
Waterhouse ("PW") as of the Closing Date (as so audited, the "Closing Date 
Balance Sheet"). The Closing Date Balance Sheet shall be prepared and audited 
in accordance with GAAP consistent with the accounting policies, practices 
and procedures for the Corporations used in connection with preparation of 
the September 30 Balance Sheet and the December 31 Balance Sheet, except as 
may otherwise be required pursuant to this Article 7 or Schedule 7.1 and 
shall be audited in accordance with Canadian generally accepted auditing 
standards and accompanied by a written opinion thereon. Each of the Purchaser 
and the Sellers shall have the right to consult, at reasonable times and with 
reasonable notice, with PW and appropriate representatives of the 
Corporations during the preparation and audit of the Closing Date Balance 
Sheet. The Closing Date Balance Sheet (x) shall be prepared without regard to 
(A) any effect from the Closing of the transactions contemplated hereby or 
any financing relating thereto, (B) the Purchaser's existing or future plans 
to modify or adjust the business, operations or accounting practices of the 
Corporations after Closing or (C) adjustments relating to the recording of 
the acquisition by the Purchaser and (y) shall reflect all proposed audit 
adjustments determined by PW to be necessary in order that the Closing Date 
Balance Sheet will comply with GAAP on a basis consistent with such prior 
accounting policies, practices and procedures but subject to this Article 7 
and Schedule 7.1.

     (b)  The Closing Date Balance Sheet shall reflect the basis of 
presentation of the Closing Date Balance Sheet that is described in Schedule 
7.1, together with the report of PW setting forth a calculation of Net 
Tangible Assets of the Corporations on a combined basis, as determined from 
the Closing Date Balance Sheet. If PW cannot deliver the opinion required by 
Section 7.1(a) solely because of the adjustments required by Schedule 7.1, 
then PW also shall prepare and deliver with its report the Adjusted Closing 
Date Balance Sheet and, in such case, the calculation of Net Tangible Assets 
shall be based on the Adjusted Closing Date Balance Sheet.

     (c)  Following the delivery of the Closing Date Balance Sheet (and, if 
applicable, the Adjusted Closing Date Balance Sheet) to the Sellers and the 
Purchaser, the Purchaser shall cause the Corporations to provide E&Y on 
behalf of the Purchaser with access to the working papers of PW relating 
thereto.

     (d)  In the event that the Purchaser, as a result of E&Y's review, 
objects in writing (stating with reasonable specificity the reasons for its 
objections) within 10 Business Days following receipt of the Closing Date 
Balance Sheet and PW's report as to the amount of the Net Tangible Assets, 
(and, if applicable, the Adjusted Closing Date Balance Sheet) then E&Y and 
the Purchaser, on the one hand, and PW and the Sellers, on the other hand, 
shall in good faith attempt to agree upon the amount of Net Tangible Assets 
(and, if applicable, the Adjusted Closing Date Balance Sheet); PROVIDED, that 
if the Purchaser and E&Y, on the one hand, and PW and the Sellers, on the 



                                    - 40 -


other hand, are unable to so agree within 25 Business Days after delivery to 
the Sellers of the Closing Date Balance Sheet and the PW report as to the Net 
Tangible Assets (and, if applicable, the Adjusted Closing Date Balance 
Sheet), then the Sellers and the Purchaser shall retain the independent 
chartered accounting firm of Deloitte & Touche LLP (the "Neutral Auditors") 
to resolve the differences on specific points of disagreement and to provide 
an opinion on a revised Closing Date Balance Sheet (and, if applicable, the 
Adjusted Closing Date Balance Sheet), together with a report of the Neutral 
Auditors setting forth a revised calculation of Net Tangible Assets, in each 
case prepared in accordance with the principles set forth in this Section 7.1 
and Schedule 7.1. The fees of the Neutral Auditors shall be shared equally 
between the Sellers, on the one hand, and the Purchaser, on the other hand, 
and the decision of the Neutral Auditors shall be conclusive, final and 
binding upon the Sellers and the Purchaser. The fees and expenses of PW shall 
be the sole responsibility of the Sellers and the fees and expenses of E&Y 
shall be the sole responsibility of the Purchaser.

     (e)  As used in this Agreement, "Net Tangible Assets" means, as of the 
Closing Date and immediately prior to the consummation of the transactions 
contemplated hereby, as derived from the Closing Date Balance Sheet (or, if 
applicable, the Adjusted Closing Date Balance Sheet), an amount equal to 
total assets minus goodwill, minus total current liabilities, minus long-term 
debt and other long-term liabilities.

7.2       ADJUSTMENTS. If the Net Tangible Assets of the Corporations as 
shown on the Closing Date Balance Sheet (or, as applicable, the Adjusted 
Closing Date Balance Sheet) is more or less than $39,121,360, being the Net 
Tangible Assets of the Corporations set out in the September 30 Balance 
Sheet, the Purchase Price shall be decreased by an amount equal to the 
difference if the Net Tangible Assets reflected on the Closing Date Balance 
Sheet (or, as applicable, the Adjusted Closing Date Balance Sheet) are less 
than $39,121,360, (the difference being referred to herein as the "Net Asset 
Difference") or shall be increased by an amount equal to the Net Asset 
Difference if the Net Tangible Assets reflected on the Closing Date Balance 
Sheet (or, as applicable, the Adjusted Closing Date Balance Sheet) are 
greater than $39,121,360. If the Purchase Price is to be so decreased, the 
Sellers shall pay to the Purchaser on the Adjustment Date an amount in cash 
equal to the Net Asset Difference. If the Purchase Price is to be so 
increased, the Purchaser shall pay to the Sellers on the Adjustment Date an 
amount in cash equal to the Net Asset Difference. In either case, payment of 
the Net Asset Difference shall be made with interest thereon at the Prime 
Rate, compounded monthly, from and including the Closing Date to and 
excluding the Adjustment Date. The amount, if any, of an adjustment to the 
Purchase Price in accordance with this section 7.2, shall be allocated to 
each Corporation on the basis of the difference between the Net Tangible 
Assets of each Corporation reflected in the September 30 Balance Sheet and 
the Closing Date Balance Sheet (or, as applicable, the Adjusted Closing Date 
Balance Sheet) for such Corporation.

7.3       INCOME STATEMENT FOR STUB PERIOD. The Purchaser shall also cause 
the Corporations to prepare an income statement for the period from January 
1, 1998 to the Closing Date (and PW shall audit such income statement in 
connection with its audit of the Closing Date Balance Sheet) to be used in 
the preparation by the parties of Tax Returns in respect of the period that 
includes the stub period.



                                    - 41 -


7.4       CONFIDENTIALITY. From and after the Closing, the Sellers shall, and 
shall cause each of its affiliates and its directors, officers, employees, 
agents and representatives to, (i) use all non-public information and 
documents relating to the Business in the United States and Mexico in their 
possession solely and exclusively in connections with the transactions 
contemplated by this Agreement and to file all Tax Returns required to be 
filed by them, and (ii) keep all such information and documents confidential, 
unless any such information or documents is or becomes generally available to 
the public other than as a result of a disclosure by the Sellers or any other 
such Person in violation of this section 7.4, or unless compelled to be 
disclosed by Law or the rules and regulations of any national stock exchange 
pursuant to which the Sellers or such Person is bound.

7.5       EMPLOYEES.

     (a)  Except for Claims that result from a breach of any of its 
obligations in this Agreement by either the Sellers or the Purchaser, as the 
case may be, the Purchaser agrees to indemnify and save harmless the Sellers, 
in accordance with section 8.2, with respect to any Claims (including claims 
for severance, notice of termination, breach of contract, constructive 
dismissal or damages in connection therewith) relating to the employment of 
any of the Employees by the Purchaser or the termination of the employment of 
any of the Employees by the Purchaser, which Claims arise from facts after 
12:00 (noon), Eastern Standard Time on the Closing Date, including the 
continuation, discontinuation or provision to any Employee of any of the 
employment policies, benefit plans or other benefits previously provided by 
any of the Sellers other than benefits pursuant to the Office Products Long 
Term Incentive Plan as it may be amended from time to time.

     (b)  The Sellers, jointly and severally, agree to indemnify and hold 
harmless the Purchaser, in accordance with section 8.1, with respect to any 
Claims (including claims for severance, notice of termination, breach of 
contract, constructive dismissal or damages in connection therewith) relating 
to the employment of any Employees of the Corporation, which Claims arise 
from facts occurring prior to the Closing Date including any benefits payable 
under the Office Products Long Term Incentive Plan.

     (c)  The Purchaser shall cause the Corporations, following the Closing 
Date, to honour all obligations due to employees of the Corporations, or any 
of them, of whatsoever nature, including normal compensation and severance 
arrangements and the IPO/Sale severance arrangements described in the Side 
Agreement.

7.6       NON-COMPETITION. For a period of five years after the Closing Date, 
neither the Sellers nor any of their respective affiliates shall, directly or 
indirectly, own, manage, operate, control, invest or acquire any equity 
interest in any business (a "Competitive Operation") which directly competes 
with the Business of the Corporations in the United States or Mexico as 
currently conducted; provided, however, that ownership of not more than 3% of 
the securities of any class of a Competitive Operation that are 
publicly-traded shall not be deemed a violation of this section 5.6; provided 
further, that should an arm's length third party acquire the business 
conducted by Axidata and/or Eurozerty B.V. ("Eurozerty") prior to the 
expiration of such five year period, the provisions of this section 5.6 shall 
not thereafter apply to Axidata and/or Eurozerty (and such third party 



                                    - 42 -


acquirors), as the case may be. Notwithstanding the foregoing, if, following 
the Closing, there is a change of control of ACI (i.e. any Person or group of 
Persons (the "New Owner") not dealing at arm's length with each other 
acquires at least 50.01% of the issued and outstanding voting shares in the 
capital of ACI), the New Owner as an affiliate of the Sellers shall, to the 
extent that it already carries on a Competitive Operation, not be required to 
divest itself of or cease to carry on such Competitive Operation. In 
addition, the Sellers shall not thereby be deemed to be in breach of this 
Section 7.6 as long as the New Owner does not (i) integrate such Competitive 
Operation with that portion of the OPD retained, directly or indirectly, by 
ACI or (ii) use or disclose the knowledge, know-how, assets, marketing 
strategies and information or other trade secrets of the Business in the 
conduct of such Competitive Operation or in such other business that would 
directly or indirectly compete with the Business. In addition, 
notwithstanding anything to the contrary contained herein, Axidata shall be 
entitled to continue to carry on in the United States the business of paper 
and systems storage.

7.7       NON-SOLICITATION.

     (a)  From the date of this Agreement until the earlier of (i) nine 
months after any sale of all of the shares in the capital of or substantially 
all of the assets of Axidata, and (ii) eighteen months after the Closing Date 
(the earlier of such dates being herein referred to as the "Trigger Date"), 
neither the Sellers, or either of them, nor the Purchaser (or any of their 
respective affiliates) shall hire any employee of the other party (or their 
respective subsidiaries or affiliates) without the prior written consent of 
the other party; and

     (b)  From the Closing Date until twelve additional months following the 
Trigger Date, neither the Sellers nor the Purchaser (or any of their 
respective affiliates) shall, directly or indirectly, solicit the employment 
of any employee of the other party (or their respective subsidiaries or 
affiliates) for employment; provided, however, that this Agreement shall not 
prohibit (i) any advertisement or general solicitation that is not 
specifically targeted at any such employees, (ii) from and after the Trigger 
Date, the employment of any such employee who first contacts the Sellers or 
the Purchaser or any of their respective affiliates on his or her own 
initiative, or (iii) the employment of any hourly employee who initiates an 
application for employment in the United States.

7.8       ACCESS TO RECORDS. Following the Closing Date and on reasonable 
prior notice during regular business hours, Sellers shall be entitled to 
access to the books and records and other information referred to in Section 
4.1(m) to the extent that such access is restricted to information that 
relates to periods prior to the Closing Date only and such access is 
reasonably required by the Sellers.

7.9       MEXICAN FOREIGN INVESTMENT NOTICE. After the Closing Date, the 
Purchaser shall give notice of the transaction to the applicable Mexican 
Authority in the manner required by Mexican Law.

7.10      RECORDING TRANSFER OF AZERTY MEXICO SHARES. The Purchaser shall 
take all steps necessary after the Closing Date to record on the stock 
register of Azerty Mexico the transfer of the 



                                    - 43 -


applicable Purchased Shares.

7.11      CHANGE OF NAME. Within three months following the Closing, ACI 
shall cause AP Support Services B.V., a corporation organized under the laws 
of the Netherlands and an indirect wholly-owned subsidiary of ACI ("APSS 
Europe"), to file an amendment to its articles of association and to take all 
other actions necessary to change APSS Europe's name (for any and all uses, 
whether internal or external, wherever used and for any and all purposes 
whatsoever) to a name that is not similar to, nor includes any words or 
expressions that may be deemed to be similar to or cause confusion with, "AP 
Support Services," and ACI shall deliver to Purchaser a copy of the amendment 
to APSS Europe's articles of association effecting such name change.

7.12      UNIZERTY NAME. Neither the Purchaser nor United nor any of their 
affiliates of either such party shall use the name "Unizerty" in Canada prior 
to July 31, 1999. Except for the agreement in the immediately prior sentence, 
ACI agrees that neither it nor any of its affiliates has any right, title or 
interest to or in the name "Unizerty," and ACI agrees that except and only to 
the extent of a breach by United, the Purchaser or any of their affiliates of 
such agreement in this section 7.12, neither ACI nor any of its affiliates 
shall make any claim of right, title or interest with respect to the name 
"Unizerty" or bring any infringement or other action against United, 
Purchaser or any of their affiliates as a result of United, Purchaser or any 
such affiliates using the name "Unizerty" anywhere in the world or in any 
manner whatsoever.

7.13      EUROZERTY NAME. Nothing contained in this Agreement or in any 
document delivered in connection herewith (including, without limitation, the 
Intellectual Property Agreement), shall prohibit the Sellers or any of their 
affiliates from using the name "Eurozerty" in Europe on an exclusive basis 
after the date hereof or from transferring such rights to any successor owner 
of the European portion of the OPD. The Purchaser and United agree that 
neither they nor any of their affiliates has any right, title or interest to 
or in the name "Eurozerty" and that none of the Purchaser, United or any of 
their affiliates shall make any claim of right, title or interest with 
respect to the name "Eurozerty" or bring any infringement or other action 
against Sellers or any of their affiliates or any successor owner of the 
European portion of the OPD as a result of any of them using the name 
"Eurozerty" in Europe in any manner whatsoever.



                                    - 44 -


                           ARTICLE 8 - INDEMNIFICATION

8.1       INDEMNIFICATION BY SELLERS. The Sellers jointly and severally 
covenant and agree with the Purchaser to indemnify and save harmless the 
Purchaser and its affiliates from and against any Claim which may be made or 
brought against the Purchaser or its affiliates, or which the Purchaser or 
its affiliates may suffer or incur in respect of, as a result of, or arising 
out of:

     (a)  any nonfulfillment of any covenant or agreement on the part of the 
          Sellers, or any one or more of them, contained in this Agreement, 
          the Side Agreement and the Intellectual Property Agreement;

     (b)  any inaccuracy in or breach of any representation or warranty of 
          the Sellers, or any one or more of them, contained in this 
          Agreement, the Side Agreement and the Intellectual Property 
          Agreement;

     (c)  any debts and liabilities of the Corporations for Taxes (i) with 
          respect to any taxable period (or portion thereof) of any of the 
          Corporations (or any predecessor) ending on or before the Closing 
          Date; (ii) of any member of an affiliated, consolidated, combined, 
          or unitary group (other than the Corporations) of which any of the 
          Corporations (or any predecessor) is or was a member on or prior to 
          the Closing Date by reason of the liability of any of the 
          Corporations pursuant to United States Treasury Regulation Section 
          1.1502-6(a) or any analogous or similar state, local, Mexican or 
          other foreign law; and (iii) allocable to the Sellers pursuant to 
          Section 8.9(f), but only to the extent that such Taxes are in 
          excess of amounts reserved therefor in the Closing Date Balance 
          Sheet;

     (d)  any Remedial Requirement associated with the presence or migration 
          of any Hazardous Substance resulting from the Seller's use or 
          occupation of the Real Property prior to the Closing Date; or

     (e)  any Claims resulting from or relating to the Office Products Long 
          Term Incentive Plan.

8.2       INDEMNIFICATION BY THE PURCHASER. The Purchaser and United jointly 
and severally covenant and agree with the Sellers to indemnify and save 
harmless the Sellers and their affiliates, from and against any Claim which 
may be made or brought against the Sellers or their affiliates, or one or 
more of them, or which they or one or more of them may suffer or incur, 
directly or indirectly, in respect of, as a result of, or arising out of:

     (a)  any nonfulfillment of any covenant or agreement on the part of the 
          Purchaser or United under this Agreement, the Side Agreement and 
          the Intellectual Property Agreement; and

     (b)  any inaccuracy in or breach of any of the Purchaser's or United's 
          representations or warranties contained in this Agreement, the Side 
          Agreement and the Intellectual 



                                    - 45 -


          Property Agreement.

8.3       PROCEDURE FOR INDEMNIFICATION.

     (a)  CLAIMS OTHER THAN THIRD PARTY CLAIMS. Following receipt from the 
Sellers or the Purchaser and their respective affiliates, as the case may be 
(the "Indemnified Party"), of a written notice of a claim for indemnification 
which has not arisen in respect of a Third Party Claim (as defined in section 
8.3(b)), the party who is in receipt of such notice (the "Indemnifying 
Party") shall have 30 days to make such investigation of the claim as the 
Indemnifying Party considers necessary or desirable. For the purpose of such 
investigation, the Indemnified Party shall make available to the Indemnifying 
Party the information relied upon by the Indemnified Party to substantiate 
the claim. If the Indemnified Party and the Indemnifying Party agree at or 
prior to the expiration of such 30 day period (or any mutually agreed upon 
extension thereof) to the validity and amount of the claim, the Indemnifying 
Party shall immediately pay to the Indemnified Party the full agreed upon 
amount of the claim. If the Indemnified Party and the Indemnifying Party do 
not agree within such period (or any mutually agreed upon extension thereof), 
such dispute shall be resolved as set out in section 9.13.

     (b)  THIRD PARTY CLAIMS. The Indemnified Party shall notify the 
Indemnifying Party in writing as soon as is reasonably practicable after 
being informed in writing that facts exist which may result in a claim 
originating from a Person other than the Indemnified Party (a "Third Party 
Claim") and in respect of which a right of indemnification given pursuant to 
section 8.1 or 8.2 may apply. The Indemnifying Party shall have the right to 
elect, by written notice delivered to the Indemnified Party within 10 days of 
receipt by the Indemnifying Party of the notice from the Indemnified Party in 
respect of the Third Party Claim, at the sole expense of the Indemnifying 
Party, to participate in or assume control of the negotiation, settlement or 
defence of the Third Party Claim, provided that:

            (i) such will be done at all times in a diligent and BONA FIDE 
                manner;

           (ii) the Indemnifying Party acknowledges in writing its obligation 
                to indemnify the Indemnified Party in accordance with the 
                terms contained in this Agreement in respect of that Third 
                Party Claim; and

          (iii) the Indemnifying Party shall pay all reasonable out-of-pocket 
                expenses incurred by the Indemnified Party as a result of 
                such participation or assumption.

          If the Indemnifying Party elects to assume such control, the 
Indemnified Party shall cooperate with the Indemnifying Party and its counsel 
and shall have the right to participate in the negotiation, settlement or 
defence of such Third Party Claim at its own expense. If the Indemnifying 
Party does not so elect or, having elected to assume such control, thereafter 
fails to proceed with the settlement or defence of any such Third Party 
Claim, the Indemnified Party shall be entitled to assume such control at the 
expense of the Indemnifying Party. In such case, the Indemnifying Party shall 
cooperate where necessary with the Indemnified Party and its counsel in 



                                     - 46 -


connection with such Third Party Claim and the Indemnifying Party shall be 
bound by the results obtained by the Indemnified Party with respect to such 
Third Party Claim.

8.4       ADDITIONAL RULES AND PROCEDURES.  The obligation of the parties to 
indemnify each other pursuant to this Article 8 shall also be construed in 
accordance with and subject to the following:

     (a)  should the Closing actually occur, for purposes of the 
          indemnification provisions of sections 8.1 and 8.2, a breach of a 
          representation or warranty contained in this Agreement (other than 
          Sections 4.1(g), 4.1(h), 4.1(l) and 4.1(ac) (collectively, the 
          "Excluded Representations")) shall be deemed to exist either if 
          such representation or warranty is actually inaccurate or breached 
          or would have been breached or inaccurate if such representation or 
          warranty had not contained any limitation or qualification as to 
          materiality, Material Adverse Effect or knowledge, it being the 
          intention of the parties hereto that an Indemnified Party shall be 
          indemnified and held harmless from and against any and all Claims 
          arising out of, based upon or with respect to the failure of any 
          such representations or warranties to be true, correct and complete 
          in any respect, determined in each case without regard to any 
          qualification as to materiality, Material Adverse Effect or 
          knowledge set forth with respect thereto.  For greater certainty, 
          this provision shall not apply in respect of the Excluded 
          Representations and shall not apply so as to remove materiality as 
          it otherwise would apply in determining GAAP.  In addition, for 
          greater certainty, the definition of Material Contract shall not be 
          deemed to be amended by this Section 8.4(a);

     (b)  an Indemnified Party shall only be entitled to make a claim for 
          indemnification pursuant to section 8.1 or 8.2, as the case be, if 
          written notice containing reasonable particulars of such claim is 
          delivered to the Indemnifying Party within the time periods 
          provided for in section 4.3 or 4.4, as the case may be;

     (c)  if any Third Party Claim is of a nature such that the Indemnified 
          Party is required by applicable Law to make a payment to any Person 
          (a "Third Party") with respect to such Third Party Claim before the 
          completion of settlement negotiations or related legal proceedings, 
          the Indemnified Party may make such payment and the Indemnifying 
          Party shall, forthwith after demand by the Indemnified Party, 
          reimburse the Indemnified Party for any such payment.  If the 
          amount of any liability under the Third Party Claim in respect of 
          which such a payment was made, as finally determined, is less than 
          the amount which was paid by the Indemnifying Party to the 
          Indemnified Party, the Indemnified Party shall, forthwith after 
          receipt of the difference from the Third Party, pay such difference 
          to the Indemnifying Party together with interest thereon at the 
          Prime Rate from the date of payment to the date of reimbursement;

     (d)  except in the circumstances contemplated by section 8.4(c), and 
          whether or not the Indemnifying Party assumes control of the 
          negotiation, settlement or defence of any 



                                     - 47 -


          Third Party Claim, the Indemnified Party shall not settle or 
          compromise any Third Party Claim except with the prior written 
          consent of the Indemnifying Party (which consent shall not be 
          unreasonably withheld).  A failure by the Indemnifying Party to 
          respond in writing to a written request by the Indemnified Party 
          for consent for a period of five Business Days or more, shall be 
          deemed a consent by the Indemnifying Party to such request;

     (e)  the Indemnifying Party and the Indemnified Party shall provide each 
          other on an ongoing and timely basis with all information which may 
          be relevant to the other's liability hereunder and shall supply 
          copies of all relevant documentation promptly as they become 
          available;

     (f)  notwithstanding section 8.4(d), the Indemnifying Party shall not 
          settle any Third Party Claim or conduct any related legal or 
          administrative proceeding in a manner which would, in the opinion 
          of the Indemnified Party, acting reasonably, have a material 
          adverse impact on the Indemnified Party; and

8.5       LIMITS TO CLAIMS.  Notwithstanding any of the provisions of 
sections 8.1 and 8.2:

     (a)  MINIMUM THRESHOLD FOR CLAIMS.  The indemnity obligations of the 
          Sellers pursuant to section 8.1(b) and of the Purchaser pursuant to 
          section 8.2(b) shall not apply: (i) unless such Claim is made 
          within the time period referred to in section 4.3 or 4.4, as the 
          case may be; and (ii) until the aggregate of all indemnifiable 
          Claims pursuant to section 8.1(b) or Section 8.2(b), as applicable, 
          exceed $750,000; provided that thereafter the Sellers and the 
          Purchaser, as applicable, shall be liable pursuant to sections 
          8.1(b) or 8.2(b), as applicable, for the full amount of such 
          indemnifiable Claims including the initial $750,000.  For greater 
          certainty, the $750,000 amount with respect to Claims against the 
          Sellers or the Purchaser is a threshold not a deductible.

     (b)  APPLICATION OF THRESHOLDS.  The $750,000 threshold described in 
          section 8.5 (a) shall not apply to nor in any way limit (i) the 
          ability of the Purchaser to receive 100% of all amounts to which it 
          is entitled in connection with any claim for indemnification in 
          respect of the Office Products Long Term Incentive  Plan pursuant 
          to Section 8.1(e) or (ii) the ability of Purchaser to receive 100% 
          of all amounts to which it is entitled in connection with any claim 
          for indemnification in respect of Taxes pursuant to Section 8.1(c) 
          or (iii) with respect to any claim with respect to environmental 
          matters pursuant to Section 8.1(d).  In addition, for greater 
          certainty, to the extent that the Purchaser is responsible under 
          this Agreement for amounts that exceed their applicable 
          corresponding reserves on the Closing Date Balance Sheet (or, as 
          applicable, the Adjusted Closing Date Balance Sheet) because no 
          representation or warranty of the Sellers shall have been breached, 
          as described in Sections 4.1(g), 4.1(h) and 4.1(l), the amount of 
          any such actual excess shall not constitute a Claim that is 
          included for the purposes of determining whether such threshold has 
          been reached.



                                     - 48 -


     (c)  MAXIMUM LIMITS.  Notwithstanding anything else contained in this 
          Article 8, in no case shall either the Sellers or Purchaser be 
          required to indemnify the other party for an amount exceeding 
          $50,000,000 in the aggregate, other than (i) with respect to Claims 
          arising from a breach of any of the representations and warranties 
          contained in sections 4.1(d) or 4.1(e), in which case the maximum 
          amount shall be the amount of the Purchase Price or (ii) with 
          respect to Claims under Section 8.1 relating to Taxes or the Office 
          Products Long Term Incentive Plan, in which case this Section 
          8.5(c) shall not apply.

8.6       AMOUNTS RECOVERED.  The amount of any Claim shall be determined 
after giving effect to any amount actually recovered from an insurer or any 
other third party, and the parties hereto agree to act in a commercially 
reasonable manner in connection with making a claim against their respective 
insurers or any third party or accepting a settlement.

8.7       NON-MONETARY RIGHTS.  The rights of indemnification contained in 
this Article are the exclusive monetary remedies with respect to the matters 
covered therein but do not preclude any other non-monetary right or remedy of 
the parties available to enforce this Agreement such as injunctive relief and 
specific performance.

8.8       PURCHASE PRICE ADJUSTMENT.  Any indemnification payment hereunder 
shall be treated by the parties hereto for all Tax reporting purposes as an 
adjustment to the Purchase Price.

8.9       CERTAIN TAX MATTERS.

     (a)  Sellers shall control the defense and settlement of any Tax audit 
or administrative or court proceeding relating to taxable periods of the 
Corporations ending on or prior to the Closing Date, provided, however, that 
if the results of any such Tax audit or administrative or court proceeding 
could result in a material tax liability for which the Purchaser is not 
entitled to indemnification under this Agreement, then the Purchaser shall 
review, consent and approve, which approval shall not be unreasonably 
withheld, the defense and settlement of any such Tax audit or proceeding. 
Sellers will promptly notify the Purchaser of the commencement of any claim, 
audit, examination, or other proposed change or adjustment by any taxing 
authority which is directly related to the liability of any of the 
Corporations for Taxes and Sellers shall keep the Purchaser duly informed of 
the progress thereof. The Purchaser will promptly notify the Sellers of the 
commencement of any claim, audit, examination or other proposed charge or 
adjustment by any taxing authority concerning an item directly related to a 
Tax Return filed by the Sellers for a tax year ending prior to or on the 
Closing Date.

     (b)  After the Closing Date, Sellers shall properly prepare and timely 
file all consolidated, combined, affiliated or unitary Tax Returns of either 
of the Sellers (or any affiliate) and which include any of the Corporations 
through the Closing Date (the "Seller Returns"), and Purchaser shall properly 
prepare and timely file all other Tax Returns with respect to the 
Corporations (the "Purchaser Returns"). Following the Closing Date, Sellers 
shall provide Purchaser with drafts of the portions of all Seller Returns 
only as they relate to the Corporations not 



                                     - 49 -


later than thirty days prior to the due date for the filing thereof for 
Purchaser's review, comment and approval, which approval shall not be 
unreasonably withheld, and Purchaser shall provide Sellers with drafts of the 
Purchaser Returns (to the extent such Tax Returns give rise to an 
indemnification obligation on the part of Sellers at the time of filing) not 
later than thirty days prior to the due date for the filing thereof for 
Sellers' review, comment and approval, which approvals will not be 
unreasonably withheld. Sellers shall not file (and shall not permit any 
affiliate to file) any amended Tax Return or claim for refund which will give 
rise to an obligation that is not indemnifiable under this Agreement.

     (c)  Sellers and the Purchaser will provide to each other full access, 
at any reasonable time and from time to time, at the business location at 
which the books and records are maintained, after the Closing Date, to such 
Tax data relating to the Corporations as the Sellers or the Purchaser, as the 
case may be, may from time to time reasonably request (including the relevant 
portions of consolidated, combined, affiliated and unitary Tax Returns which 
include the Corporations).

     (d)  In the event that any of the Corporations has a carryback of a 
loss, credit or other tax attribute from a taxable period ending after the 
Closing Date which may be carried back to a consolidated, combined, unitary 
or affiliate Tax Return of any of the Sellers (or any affiliate), Sellers 
shall within fifteen days of the receipt of a refund or confirmation by the 
applicable taxing authority of a reduction in Taxes pay such amount to the 
applicable Corporation. In the event that such carryback is subsequently 
disallowed by the applicable taxing authority, such Corporation will repay 
such refund, along with interest calculated at the statutory underpayment 
rate set forth in the U.S. Tax Code, to the Sellers in the event there is a 
final determination that such refund is not allowable.

     (e)  Any Tax refunds of the Corporations that are received by the 
Purchaser or the Corporations (or their affiliates) and any amounts credited 
against Tax to which the Purchaser or the Corporations (or their affiliates) 
become entitled, that relate to Tax periods of the Corporations or portions 
thereof ending on or before the Closing Date and that are not (i) shown as an 
asset on the December 31 Balance Sheet or the Closing Date Balance Sheet or 
(ii) attributable to a carryback of the Corporations from a Tax period (or 
portion thereof) ending after the Closing Date shall be for the account of 
the Sellers, and the Purchaser shall pay over to the Sellers any such refund 
or the amount of any such credit within fifteen (15) days after the receipt 
or entitlement thereto. In addition, to the extent that any amount accrued as 
a liability for current Taxes on the December 31 Balance Sheet or the Closing 
Date Balance Sheet is refunded or credited to the Corporations (or their 
affiliates), the Purchaser shall pay such amount to the Sellers within 
fifteen (15) days after receipt or entitlement thereto. The Purchaser and the 
Corporations shall be entitled to retain (and the Sellers upon receipt or 
credit thereof shall pay to the Purchaser within 15 days) any Tax refund or 
credit which is shown as an asset on the December 31 Balance Sheet or the 
Closing Date Balance Sheet or is attributable to the carryback of losses or 
credits or other tax benefits from a taxable period or portion thereof ending 
after the Closing Date to a taxable period or portion thereof ending before 
the Closing Date. The amount of any Tax refund or credit which is payable 
hereunder shall be reduced by any increase in Taxes attributable to the 
receipt thereof. In the event that such refund or credit is subsequently 
disallowed by the applicable taxing authority, such Sellers will repay such 
refund, along with interest calculated at the statutory underpayment rate set 
forth in the 



                                     - 50 -


U.S. Tax Code, to the Purchaser or the applicable Corporation in the event 
there is a final determination that such refund is not allowable.

     (f)  For purposes of Section 8.1(c)(ii), Taxes with respect to any 
separate Tax Return of the Corporations attributable to any taxable period of 
the Corporations beginning before the Closing Date and ending after the 
Closing Date shall be allocated (i) to the Sellers for the period up to the 
Closing Date, and (ii) to the Purchaser for the period beginning after the 
Closing Date to the end of the taxable period. Such allocation of Taxes 
between the pre-Closing Date and post-Closing Date periods shall be 
accomplished by closing the books of the Company as of the close of business 
on the Closing Date or, where not susceptible to such method of allocation, 
pro rata on the basis of the number of elapsed days.

     (g)  Sellers shall not make any election to attribute losses of any of 
the Corporations to any of the Sellers (or any affiliate) pursuant to United 
States Treasury Regulation Section 1.1502-20(g).

8.10      TRANSFER TAXES.  The Purchaser shall be responsible for the payment 
of and shall indemnify and hold the Sellers harmless from and against any and 
all sales, use, transfer, recording, stamp, documentary, real estate or other 
similar Taxes attributable to the transactions contemplated by this Agreement.

                               ARTICLE 9 - GENERAL

9.1       PUBLIC NOTICE.  No public disclosure of any kind shall be made or 
permitted in respect of the subject matter of this Agreement, the Side 
Agreement or the Intellectual Property Agreement by any party without 
consultation with and the consent of the other parties (such consent not to 
be unreasonably withheld) except for such disclosure as may be required by 
Law or the rules and regulations of any stock exchange of which such party is 
subject. The parties acknowledge that there will be a public announcement or 
announcements as soon as is reasonably practicable following the execution 
and delivery hereof and in such form as is approved by the Sellers and the 
Purchaser.

9.2       EXPENSES.  Except as otherwise provided in this Agreement, each 
party shall be responsible for its own fees, expenses, and other costs 
incurred in connection with the transactions contemplated by this Agreement.

9.3       FURTHER ASSURANCES.  The parties shall do all such things and 
provide all such reasonable assurances as may be required to consummate the 
transactions contemplated this Agreement, and each party shall provide such 
further documents or instruments required by any other party as may be 
reasonably necessary or desirable to effect the purpose of this Agreement and 
carry out its provisions, whether before or after the Closing.

9.4       TIME OF THE ESSENCE.  Time is of the essence to every provision of 
this Agreement. Extension, waiver or variation of any provision of this 
Agreement shall not be deemed to affect this provision and there shall be no 
implied waiver of this provision.



                                     - 51 -


9.5       BENEFIT OF THE AGREEMENT.  This Agreement shall enure to the 
benefit of and be binding upon the parties hereto and their respective heirs, 
executors, administrators, personal representatives, successors and permitted 
assigns.

9.6       ENTIRE AGREEMENT.  With respect to the subject matter of this 
Agreement, this Agreement supersedes all prior understandings and 
communications between the parties or any of them, oral or written, and 
constitutes the entire agreement between the parties other than (i) the Side 
Agreement, (ii) the Intellectual Property Agreement (when executed and 
delivered) and (iii) the Confidentiality Agreement dated May 5, 1997 between 
ACI and the Purchaser, which shall terminate as of Closing in respect of the 
Corporations but not in respect of ACI, Axidata or ACI's European affiliates 
and in respect of the Business carried on by ACI through the OPD in Canada 
and Europe. Each party acknowledges that it shall have no right to rely upon 
any amendment, promise, modification, statement or representation made or 
occurring subsequent to the execution of this Agreement unless the same is in 
writing and executed by the Purchaser and the Sellers.

9.7       WAIVER.  The failure of any party to enforce at any time any of the 
provisions of this Agreement or any of its rights in respect thereto or to 
insist upon strict adherence to any term of this Agreement shall not be 
considered to be a waiver of such provision, right or term or in any way to 
affect the validity of this Agreement or deprive the applicable party of the 
right thereafter to insist upon strict adherence to that term or any other 
term of this Agreement. The exercise by any party of any of its rights 
provided by this Agreement shall not preclude or prejudice such party from 
exercising any other right it may have under this Agreement, notwithstanding 
any previous action or proceeding taken by it hereunder. Any waiver by any 
party of the performance of any of the provisions of this Agreement shall be 
effective only if in writing and signed by a duly authorized representative 
of such party.

9.8       NOTICES.  All payments and communications which may be or are 
required by this Agreement to be given by any party to any other party, shall 
be in writing and (i) delivered personally, (ii) sent by prepaid courier 
service or certified mail, or (iii) sent by telecopier or other similar means 
of electronic communication to the parties at their following respective 
addresses:



                                     - 52 -


     (a)  For the Purchaser or United:

                United Stationers Inc.
                2200 East Golf Road
                Des Plaines, Illinois  60016
                U.S.A.
                ATTENTION: OTIS H. HALLEEN/RANDALL W. LARRIMORE
                Telecopier: (847) 699-3193

          with a copy to:

                Weil, Gotshal & Manges LLP
                100 Crescent Court, Suite 1300
                Dallas, Texas  75201
                U.S.A.
                ATTENTION: MARY R. KORBY
                Telecopier: (214) 746-7777

     (b)  For the Sellers:

                Abitibi-Consolidated Inc.
                800 Rene-Levesque Blvd. West
                P.O. Box 69
                Montreal, Quebec
                H3B 1Y9
                ATTENTION: ROBERT P. KANEE/PAT CROWLEY
                Telecopier: (514) 394-2334

          with a copy to:

                Goodman Phillips & Vineberg
                250 Yonge Street, Suite 2400
                Toronto, Ontario
                M5B 2M6
                ATTENTION: STEPHEN H. HALPERIN
                Telecopier: (416) 979-1234

                Azerty Incorporated
                13 Centre Drive
                Orchard Park, New York  14127
                U.S.A.
                ATTENTION: PRESIDENT
                Telecopier: (716) 662-0750


Any such notice so given shall be deemed conclusively to have been given and 
received when so 



                                    - 53 -


personally delivered or delivered by courier or on the day on which delivery 
is confirmed if sent by telecopier or other electronic communication or on 
the fifth day following the sending thereof by certified mail. Any party may 
from time to time change its address hereinbefore set forth by notice to the 
other parties in accordance with this section.

9.9       ASSIGNMENT.  Neither this Agreement nor any rights or obligations 
hereunder shall be assignable by any party without the prior written consent 
of each of the other parties.  Any assignment without such consent shall be 
null and void.

9.10      SEVERABILITY. If any provision of this Agreement is invalid or 
unenforceable, such provision shall be severed and the remainder of this 
Agreement shall be unaffected thereby but shall continue to be valid and 
enforceable to the fullest extent permitted by law.

9.11      COUNTERPARTS. This Agreement may be executed by the parties in 
separate counterparts (by original or facsimile signature) each of which when 
so executed and delivered shall be an original, but all of which, when taken 
together, shall together constitute one and the same instrument. This 
Agreement shall not be binding upon any party until it has been executed by 
each of the parties and delivered to all other parties.

9.12      GOVERNING LAW. This Agreement and the rights and obligations of the 
parties hereunder shall be governed by and construed in accordance with the 
laws of the State of New York, without regard to conflicts of laws principles 
thereof. The parties agree that the Courts of the State of New York shall 
have exclusive jurisdiction to entertain any action or other legal 
proceedings based on any provisions of this Agreement. Each party does hereby 
irrevocably attorn to the exclusive jurisdiction of the Courts of the State 
of New York.

9.13      DISPUTE RESOLUTION. The parties shall attempt in good faith to 
promptly resolve any dispute (a "Dispute") arising out of or relating to this 
Agreement, the Side Agreement or the Intellectual Property Agreement (other 
than a Dispute relating to the Closing Date Balance Sheet or calculation of 
Net Tangible Assets, which shall be resolved exclusively in accordance with 
section 7.1) by negotiations between executives or other representatives of 
each party with authority to settle the Dispute. Any party may give the other 
party written notice of any Dispute not resolved in the ordinary course of 
business. Within 20 days of said notice, executives or other representatives 
of each party to the Dispute shall meet at a mutually acceptable time and 
place, and thereafter as they deem necessary, to exchange relevant 
information and to attempt to resolve the Dispute. If the matter has not been 
resolved within 60 days of the date of the disputing party's initial written 
notice, or if the parties fail to meet within 20 days of such written notice, 
either party may initiate mediation of the Dispute in accordance with the 
procedures set forth on Schedule 9.13. If the Dispute cannot be resolved 
after each party has adhered to the procedures for mediation set forth in 
Schedule 9.13, any party may initiate litigation or other appropriate 
remedial proceedings in law or equity.

9.14      UNITED GUARANTEE.  United hereby irrevocably and unconditionally 
guarantees and covenants to the Sellers that the Purchaser will perform, 
observe and keep each and every  obligation, covenant, condition and 
agreement in or arising out of this Agreement and any and all 



                                    - 54 -


other agreements and other documents and instruments delivered pursuant 
hereto to be performed, observed and kept by the Purchaser including, without 
limitation, pursuant to the Side Agreement and the Intellectual Property 
Agreement (collectively, the "Obligations"). United agrees with the Sellers 
that United shall be jointly and severally bound with the Purchaser for the 
fulfilment of all obligations of the Purchaser under the Obligations and in 
the enforcement of its rights under the Obligations, the Sellers may proceed 
against United as if it were named the obligor under the Obligations. United 
hereby waives any right to require the Sellers to proceed against the 
Purchaser to pursue any remedy whatsoever which may be available to the 
Sellers before proceeding against United. The Sellers shall be entitled to 
grant extensions or otherwise to release or discharge the Purchaser from any 
liability and to accept security or other guarantees without effecting, in 
any way, the Sellers's rights against United. If the Purchaser makes any 
assignment for the benefit of its creditors or the Purchaser takes advantage 
of any act or statute that may be in force for bankrupt or insolvent debtors, 
or if the Purchaser is liquidated or wound-up, United shall nevertheless 
remain liable to the Sellers for the Obligations.

9.15      SERVICE. If any party to this Agreement becomes a party (the 
"ExJuris Party") to any legal action or proceeding in connection with this 
Agreement commenced in the United States and upon which legal process must be 
served outside of the United States, such Ex-Juris Party shall designate, in 
writing, within thirty (30) days, an agent within the United States to 
receive for and accept service on behalf of such Ex-Juris Party in connection 
with the legal action or proceeding. Failure of the Ex-Juris Party to receive 
a copy of the legal process shall not in any way affect the service of the 
legal process on such Ex-juris Party, and service of legal process upon the 
agent of the Ex-Juris Party shall be service on such Ex-juris Party for all 
purposes. If the ExJuris Party fails to appoint an agent for service of legal 
process in accordance with this section 9.14, such Ex-Juris Party will be 
deemed to have irrevocably consented to service of process via registered or 
certified mail, postage prepaid, to the last address designated for such 
Ex-Juris Party, and service is deemed effective thirty (30) days after the 
date of the mailing. Such service by mail shall be deemed personal service 
and acceptance of service by the Ex-Juris Party with respect to any action or 
proceeding related to this Agreement. Service in accordance with this 
provision shall not preclude any other manner of service permitted by the 
laws of the United States, Canada or Mexico.

9.16      WAIVER OF JURY TRIAL AND PUNITIVE DAMAGES. EACH OF THE PARTIES 
HERETO KNOWINGLY, VOLUNTARILY AND INTENTIONALLY WAIVES ANY RIGHTS IT MAY HAVE 
TO A TRIAL BY JURY AND THE AWARD OF PUNITIVE DAMAGES IN RESPECT OF ANY 
LITIGATION BASED HEREON, OR ARISING OUT OF, UNDER, OR IN CONNECTION WITH, 
THIS AGREEMENT, OR ANY EXHIBIT OR SCHEDULE HERETO, OR ANY DOCUMENT DELIVERED 
PURSUANT TO THIS AGREEMENT, OR ANY COURSE OF CONDUCT, COURSE OF DEALING OR 
STATEMENTS (WHETHER VERBAL OR WRITTEN) RELATING TO THE FOREGOING. THIS 
PROVISION IS A MATERIAL INDUCEMENT FOR THE PARTIES HERETO TO ENTER INTO THIS 
AGREEMENT.

          IN WITNESS WHEREOF the parties have duly executed this Agreement.

                                      ABITIBI-CONSOLIDATED INC.



                                    - 55 -


                                      Per:
                                            ----------------------------------
                                            Authorized Signing Officer


                                      Per: 
                                            ----------------------------------
                                            Authorized Signing Officer


                                      ABITIBI-CONSOLIDATED SALES 
                                      CORPORATION


                                      Per: 
                                            ----------------------------------
                                            Authorized Signing Officer


                                      Per:  
                                            ----------------------------------
                                            Authorized Signing Officer


                                      AZERTY INCORPORATED


                                      Per: 
                                            ----------------------------------
                                            Authorized Signing Officer


                                      Per: 
                                            ----------------------------------
                                            Authorized Signing Officer


                                      POSITIVE ID WHOLESALE INC.


                                      Per: 
                                            ----------------------------------
                                            Authorized Signing Officer


                                      Per: 
                                            ----------------------------------
                                            Authorized Signing Officer



                                      AP SUPPORT SERVICES INCORPORATED


                                      Per:  
                                            ----------------------------------
                                            Authorized Signing Officer

                                      Per:  
                                            ----------------------------------
                                            Authorized Signing Officer


                                      AZERTY DE MEXICO, S.A. DE C.V.


                                      Per:  
                                            ----------------------------------
                                            Authorized Signing Officer


                                      Per: 
                                            ----------------------------------
                                            Authorized Signing Officer


                                      UNITED STATIONERS SUPPLY CO.


                                      Per:  
                                            ----------------------------------
                                            Authorized Signing Officer


                                      UNITED STATIONERS INC.

                                      Per:  
                                            ----------------------------------
                                            Authorized Signing Officer



                                SCHEDULE 1.1(ba)

                           SEPTEMBER 30 BALANCE SHEET


                                    Attached



                                  SCHEDULE 2.1

                                     SELLERS





Name of Seller          Corporation             Number of Purchased Shares
- --------------          -----------             --------------------------
                                          

ACSC                    Azerty                  542.857 common shares

ACSC                    ID                      100 common shares

ACSC                    APSS                    100 common shares

ACI                     Azerty Mexico           99 Class 1 shares
                                                990 Class 2 shares




                                  SCHEDULE 7.1

               BASIS OF PRESENTATION OF CLOSING DATE BALANCE SHEET


The following shall be the basis of presentation of the Closing Date Balance
Sheet:

1.   TREATMENT OF RESERVES. The parties agree that the following amounts
     shall constitute the applicable reserves on the December 31 Balance
     Sheet:




            Type of Reserve             Amount of Reserve
            ---------------             -----------------
                                     

     (a)    Accounts Receivable              $750,000
     (b)    Inventory                        $800,000
     (c)    Accrued Payables                 $982,000
     (d)    Legals                      NIL



     Each such reserve amount shall be the actual reserve amount for purposes 
     of the Closing Date Balance Sheet except to the extent that in the 
     period between December 31, 1997 and the date of the Closing Date 
     Balance Sheet there has been a material change in the corresponding area 
     of the Business causing the Financial Statements not to be fairly stated 
     in accordance with GAAP, in the judgment of PW (or, if applicable, the 
     Neutral Auditor), after taking into account materiality based on all of 
     the reserves above. In such circumstances, the Closing Date Balance 
     Sheet reserves will be adjusted so that the Closing Date Balance Sheet 
     is fairly stated in accordance with GAAP and, if the reserves on the 
     Closing Date Balance Sheet are less than the aggregate of the above 
     reserves, an adjusted Closing Date Balance Sheet (the "Adjusted Closing 
     Date Balance Sheet") will be prepared by PW (or, if applicable, the 
     Neutral Auditor) reflecting the reserves above and the Net Tangible 
     Assets shall be derived from such Adjusted Closing Date Balance Sheet.

2.   SEVERANCE ACCRUALS.  Only unpaid severance in respect of severed 
     employees as at the Closing Date shall be accrued in the Closing Date 
     Balance Sheet.

3.   BOOKING OF ERRORS.  All known assets and liabilities shall be booked in 
     preparing the Closing Date Balance Sheet including all known errors. 
     Items that are subjective in nature shall not be viewed as known errors 
     for such purposes.

4.   YEAR END ACCOUNTING AND AUDIT TREATMENT AND PROCEDURES:

     Co-op advertising will be recorded at Closing in accordance with the 
     past practices of the Corporations. For greater certainty, one quarter 
     of the forecast profit of the Corporations for the 1998 year shall be 
     recognized. Should this result in a material amount, the Closing Date 
     Balance Sheet will be adjusted accordingly on the Adjusted Closing Date 
     Balance Sheet and the Net Tangible Assets shall be derived from such 
     Adjusted Closing Date Balance Sheet.




                                     - 2 -



                                  SCHEDULE 9.13

                               DISPUTE RESOLUTION


The following is the exclusive means of the parties to resolve all Disputes
(other than those arising out of section 7.1, which shall be resolved
exclusively by the means set forth therein) arising out of, relating to or
resulting from this Agreement (including the Side Agreement and the Intellectual
Property Agreement) and the transactions contemplated hereby. All negotiations
pursuant to section 9.13 and this Schedule 9.13 are confidential and shall be
treated as compromise and settlement negotiations for purposes of the United
States Federal Rules of Evidence and any other applicable foreign, federal or
state rules of evidence.

1.   If the dispute has not been resolved by negotiation as provided in 
     section 9.13, the parties shall endeavour to settle the dispute by 
     mediation under the then current Center For Public Resources ("CPR,) 
     Model Procedure for Mediation of Business Disputes. The neutral third 
     party will be selected from the CPR Panels of Neutrals. If the parties 
     encounter difficulty in agreeing on a neutral, they will seek the 
     assistance of CPR in the selection process.

2.   The parties shall attempt in good faith to resolve by mediation any 
     dispute arising out of or relating to this Agreement. Any party may 
     initiate a mediation proceeding by a request in writing to the other 
     party following the negotiation procedures set forth in section 9.13. 
     Thereupon, both parties will be obligated to engage in a mediation. The 
     proceeding will be conducted in accordance with the then current CPR 
     Model Procedure for Mediation of Business Disputes, with the following 
     exceptions:

     (a)  if the parties have not agreed within 30 days of the request  for 
          mediation on the selection of a mediator willing to serve, the 
          Center For Public Resources, upon request of any party, shall 
          appoint a member of the CPR Panels of Neutrals as the mediator; and

     (b)  efforts to reach a settlement will continue until the conclusion of 
          the proceeding, which is deemed to occur when: (a) a written 
          settlement is reached, or (b) the mediator concludes and informs 
          the parties in writing that further efforts would not be useful, or 
          (c) the parties agree in writing that an impasse has been reached. 
          No party may withdraw before the conclusion of the proceeding.

     The parties regard this obligation to mediate an essential provision of 
     this Agreement and one that is legally binding on them. In case of a 
     violation of such obligation by any party, the other party or parties 
     may bring an action to seek enforcement of such obligation in any court 
     having jurisdiction thereof.

3.   If the dispute has not been resolved by mediation as provided herein 
     within 60 days of the initiation of such procedure, any party may 
     initiate litigation upon 10 days' written notice to the other party or 
     parties; provided, however, that if one party has requested another 
     party or parties to participate in mediation and such other party or 
     parties has failed to participate, the requesting party may initiate 
     litigation before expiration of the above period.



                                     - 2 -


4.   The procedures specified in section 9.13 and this Schedule 9.13 shall be 
     the sole and exclusive procedures for the resolution of Disputes among 
     the parties arising out of or relating to this Agreement; provided, 
     however, that a party may seek a preliminary injunction or other 
     provisional judicial relief if in its judgment such action is necessary 
     to avoid irreparable damage or to preserve the status quo. Despite such 
     action the parties will continue to participate in good faith in the 
     procedures specified in section 9.13 and this Schedule 9.13.

5.   All applicable statutes of limitation and defenses based upon the 
     passage of time shall be tolled while the procedures specified in 
     section 9.13 and this Schedule 9.13 are pending. The parties will take 
     such action, if any, required to effectuate such tolling.