AMENDMENT NO. 3
                               TO MASTER AGREEMENT FOR 
                COMPUTER SOFTWARE DEVELOPMENT, LICENSE AND MAINTENANCE
                                           


      This Amendment No. 3 ("Amendment"), by and between THE SOUTHLAND 
CORPORATION, a Texas corporation ("SLC") and CANMAX RETAIL SYSTEMS, INC., a 
Texas corporation ("Canmax") is entered into as of this ___ day of 
_______________, 1997, and amends and supplements that certain Master 
Agreement for Computer Software Development, License and Maintenance as 
restated pursuant to the October 4, 1994 Amendment, as amended by Amendment 
dated July 31, 1996 and Amendment No. 2 dated September 7, 1996 (collectively 
the "Master Agreement").

                                      RECITALS:
                                           
      SLC and Canmax desire to further amend the Master Agreement to provide 
for the purchase by SLC of the right to use, possess, copy and modify the 
C-Serve Software and Project Software and related documentation, in 
accordance with the terms and conditions set forth herein.

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

      1.   DEFINITIONS.  All capitalized terms used and not otherwise defined 
herein shall have the meanings ascribed to such terms in the Master Agreement.

      2.   LICENSE FEE.   SLC will pay to Canmax, as provided below, the 
total sum of One Million Dollars ($1,000,000.00) as a one time license fee 
for a license, as further described below, to use, possess, copy and modify 
the C-Serve Software and the Project Software, whether currently existing or 
created in the future, including, without limitation, (i) the source code and 
Project Materials and all technical and operational documentation and 
materials related thereto, (ii) any modifications, improvements, enhancements 
or replacements and any newly developed software or materials related thereto 
or to SLC's Retail Information System (RIS) project (including updates, 
enhancements or error corrections referenced in Section 10 of the Master 
Agreement and including any software or materials pertaining to version 2.1 
of Phase 2B or development for subsequent phases of the RIS, if SLC retains 
Canmax to perform such development) and (iii) any work in process being 
performed by Canmax for SLC (collectively, the "Source Code Materials"). The 
Source Code Materials in existence as of the date of this Amendment are 
described on Exhibit A. 

      Immediately upon execution of this Amendment, Canmax will provide SLC 
with all Source Code Materials.  Within five (5) days after SLC's receipt of 
the Source Code Materials, SLC will pay to  Canmax one half ($500,000.00) of 
the license fee.   Within  five (5) business days of completion by Canmax of 
the Source Code Reconciliation as described in Section 5, Canmax will provide 
SLC with written certification from the President of Canmax that Canmax 

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has paid in full all charges and fees owed by Canmax to any third party in 
connection with SLC's RIS project or the Source Code Materials, including, 
(i) any third party vendors who performed work on or in connection with, or 
provided hardware in connection with, the RIS project or the Source Code 
Materials on behalf of Canmax, (ii) third party licensors, (iii) the 
providers of the CTI boards or (iv) sales taxes or other payments owed to any 
governmental authority in connection with services, software or hardware 
provided by Canmax to SLC. Within five (5) days of SLC's receipt of the 
certification SLC will pay to Canmax the remaining one half of the license 
fee ($500,000.00).  

      If Canmax is unable to provide the certificate, Canmax will provide 
SLC, within five (5) business days after completion of the Source Code 
Reconciliation, a correct and complete list of all outstanding creditors as 
described above and the amounts owed by Canmax to each creditor certified in 
writing by the President of Canmax.   SLC may thereafter, at its option, pay 
to the Canmax creditors the amounts claimed against Canmax, offset such 
payment against the second $500,000.00 installment and disburse the 
remainder, if any, to Canmax.  If the third party claims paid by SLC exceed 
$500,000.00, SLC will credit such excess against invoices submitted by 
Canmax.   SLC shall have no obligation to pay such creditors and the 
creditors shall not be third party beneficiaries of this Amendment.  If 
Canmax subsequently provides the President's certificate to SLC, SLC shall 
remit to Canmax within five (5) days of SLC's receipt of the certificate 
described in the preceding paragraph, any portion of the second installment 
not previously paid to a Canmax creditor by SLC pursuant to this paragraph.

      3.   LICENSE.  In consideration of the payment of the license fee, 
Canmax hereby grants to SLC a worldwide, perpetual, non-exclusive, 
irrevocable, royalty-free license to use, possess, copy and modify the Source 
Code Materials for use in connection with SLC's business operations and those 
of its SLC Affiliates, franchisees and area licensees, both foreign and 
domestic.  SLC may sell, market or distribute the Source Code Materials, and 
software or materials derived therefrom, to its SLC Affiliates, franchisees 
and foreign or domestic licensees, but SLC may not otherwise commercially 
market or sell the Source Code Materials.  SLC's right to provide the Source 
Code Materials to licensees may, at Canmax's option, be conditioned upon the 
licensee's acceptance of Canmax's development rights as set forth in Section 
15.14 of the Master Agreement. Canmax acknowledges that SLC may modify or 
enhance the Source Code Materials or provide the Source Code Materials to 
third parties to modify or enhance; provided that, prior to any third party's 
access to the Source Code Materials, such third party shall have executed a 
confidentiality/non-disclosure agreement in substantially the form attached 
hereto as Exhibit B.  Any modifications or enhancements to the Source Code 
Materials made by or on behalf of SLC (other than modifications or 
enhancements made by Canmax which shall be part of the Source Code Materials) 
and all proprietary rights relating thereto, shall be owned solely by SLC, 
and Canmax shall have no rights with respect thereto. Canmax agrees to 
provide SLC with all source and object code and other documentation and 
materials developed by Canmax for SLC or to which SLC is otherwise entitled 
pursuant to the terms of this Agreement after the date of this Amendment 
which constitute Source Code Materials, on a calendar quarterly basis or upon 
SLC's written request.  Subject to the provisions of the Master Agreement and 
this Amendment, SLC's license rights shall not be transferable except as 
provided in Section 15.01 of the Master Agreement.  Notwithstanding anything 
in the Master Agreement to the contrary, SLC's license rights granted 
pursuant to this Amendment shall be unlimited and without restriction except 
as expressly set forth in this Amendment and shall not be affected or limited 
by any contrary terms or provisions contained in the Master Agreement 
including, but not limited to, Sections 2.01 and  2.03.

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      Canmax represents and warrants to SLC (i) that Canmax has sole and 
exclusive ownership interest in the Source Code Materials (other than Third 
Party Software), (ii) that Canmax had the full right and authority to grant 
the license rights granted hereunder to the Source Code Materials and that 
such license grant has been duly authorized by all necessary action on the 
part of Canmax and is not in conflict with the articles of incorporation or 
bylaws of Canmax, (iii) that the execution and performance of this Amendment 
by Canmax will not result in any conflict with or breach or violation of any 
agreement with any third party (including any loan agreement) and that any 
consents required from any third party (including any lender) in connection 
with the execution or performance of this Amendment have been obtained; (iv) 
that, except as disclosed to SLC in writing pursuant to Section 2 above, as 
of the date of the disclosure, all fees or charges owed by Canmax to any 
third party in connection with the RIS project or development or other work 
of or on the RIS project or the Source Code Materials, and any license fees 
owed to any third party in connection with the Source Code Materials or the 
license thereof, will have been paid in full, (v) that there are no liens or 
encumbrances (including liens securing the repayment of borrowed funds) 
affecting or applicable to the Source Code Materials or any proprietary 
rights relating thereto and (vi) that the Source Code Materials do not 
infringe upon any intellectual property  right of any third party, including 
trade secrets, copyright or patent rights. CANMAX AGREES TO INDEMNIFY, DEFEND 
AND HOLD SLC HARMLESS FROM ANY CLAIMS, SUITS, LIABILITIES, CAUSES OF ACTION, 
DAMAGES, EXPENSES OR LOSSES ASSOCIATED WITH OR ARISING OUT OF ANY BREACH BY 
CANMAX OF THE REPRESENTATIONS SET FORTH IN SUBPARTS (i), (ii), (iii), (iv) 
and (v) OF THE PRECEDING SENTENCE REGARDLESS OF ANY NEGLIGENCE OR OTHER FAULT 
ON THE PART OF SLC.  Canmax further agrees to indemnify and defend SLC from 
and against any intellectual property infringement claim relating to the 
Source Code Materials, in the manner set forth in Section 12 of the Master 
Agreement.  The warranties contained in this Amendment will not diminish the 
warranties given by Canmax in the Master Agreement.

      The license grant contained in this Amendment will not diminish or 
supersede SLC's ownership rights in the exclusive Project Materials as 
contained in the Master Agreement or Canmax's oblations with respect thereto, 
provided however, that  SLC's right to use, possess and modify the exclusive 
Project Software component of the Source Code Materials will not be subject 
to the limitations contained in Section 2.04 of the Master Agreement.

      4.  THIRD PARTY SOFTWARE.     SLC and Canmax acknowledge that the 
Source Code Materials may include certain Third Party Software.  Canmax 
warrants that Exhibit A contains a complete list of all such Third Party 
Software which is currently part of the Source Code Materials (the "Current 
Third Party Software").  Canmax represents that, (i) apart from the Current 
Third Party Software, there are no other third party software products that 
comprise part of the Source Code Materials, and (ii) Canmax has  previously 
obtained for SLC a license to use such Current Third Party Software pursuant 
to the terms of the Master Agreement.  Within thirty (30) days from the 
effective date of this Amendment, Canmax will provide SLC with a listing of 
the number of Current Third Party Software licenses which Canmax has obtained 
for SLC.  SLC will be responsible to obtain any development licenses required 
by SLC in connection with any development undertaken by or on behalf of SLC, 
except development work performed by Canmax.

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      5.   SOURCE CODE RECONCILIATION.  For and in consideration of the 
license fee described in Section 2, at no additional cost to SLC and as a 
condition to SLC's obligation to pay the second half of the license fee 
referenced in Section 2,  Canmax, agrees, immediately upon execution of this 
Amendment and at its expense, to provide SLC with Canmax resources necessary 
to perform source code reconciliation of the Source Code Materials, including 
support, testing and verification necessary to assure that the source code is 
complete and matches the object code that SLC utilizes in its Retail 
Information System (RIS) production environment (the "Source Code 
Reconciliation").  As soon as practicable after execution of this Amendment, 
Canmax will provide SLC with all Source Code Materials listed on Exhibit A.  
Canmax will advise Linda Svehlak and Pat Lopez with SLC in writing when 
Canmax has delivered to SLC all Source Code Materials.  SLC will, in 
conjunction with Canmax, promptly review the Source Code Materials and advise 
Canmax in writing of any Source Code Materials which are not included in the 
submission or any discrepancies.  Canmax will promptly obtain the missing 
materials or resolve the discrepancies, advise SLC as provided above and the 
parties will again review the submission for completeness and discrepancies.  
When the parties have agreed in writing that the submission is complete (the 
"Reconciliation Commencement Date"), SLC, in conjunction with Canmax will 
promptly conduct the Source Code Reconciliation. Provided that Canmax 
provides adequate resources to SLC in connection therewith, SLC agrees to 
complete the Source Code Reconciliation within three (3) weeks after the 
Reconciliation Commencement Date.  Any problems discovered during the 
reconciliation will be referred back to Canmax for solution. Canmax will 
advise SLC in writing when such problems have been resolved and the date SLC 
receives such notice will be the new Reconciliation Commencement Date. The 
Source Code Reconciliation shall be deemed completed when approved in writing 
by Pat Lopez and Linda Svehlak of SLC. The Source Code Reconciliation will be 
performed at no additional cost to SLC.

      6.   RIGHTS OF CANMAX.  Subject to the provisions of this Amendment, 
Canmax shall retain the rights, and be subject to the obligations (including 
the Exclusive Period obligations), with respect to the Source Code Materials 
as contained in the Master Agreement.

      7.   FUTURE CANMAX SERVICES.  SLC agrees to utilize Canmax services in 
connection with SLC's Retail Information System, including but not limited 
to, CTI boards or other third party hardware, Software Maintenance services, 
Help Desk services and other services specified in the Master Agreement and, 
at SLC's option, development or other services or as may otherwise be 
negotiated between the parties, up to a total of not less than Four Million 
Dollars ($4,000,000.00) in fees over the period commencing on the effective 
date of this Amendment and ending December 7, 1998.  The fees for services or 
hardware provided or performed by Canmax for SLC pursuant to a contract 
between SLC and an intermediary (such as NCR or EDS) shall be included for 
purposes of this Section.  SLC's obligations as contained in this Section 
shall be subject to performance by Canmax of its covenants, obligations, 
representations and warranties applicable to such services pursuant to the 
Master Agreement.  If SLC provides Canmax the right to perform services or 
hardware of a type generally consistent with the type of services or hardware 
previously performed by Canmax for SLC, but Canmax is unwilling or unable to 
provide those services or hardware, the estimated fees or costs for those 
services or hardware will be included for purposes of this Section.  

      Canmax will not have any liability or responsibility under the Master 
Agreement or this Amendment (i) for warranty obligations contained in Section 
10.01(a), (b), (c) and (d) of the Master Agreement or indemnification 
obligations or (ii) for its failure to provide or delay in 

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providing training services or Software Maintenance, in each case to the 
extent attributable to development of subsystems by or on behalf of SLC by an 
entity other than Canmax, unless Canmax agrees thereto in writing.  
Additionally, Canmax will not be obligated to meet the production support 
resolution time requirements contained in Exhibit N to the Master Agreement 
with respect to subsystems developed by or on behalf of SLC by an entity 
other than Canmax. 

      8.   TERMINATION OF ESCROW.  SLC and Canmax hereby agree that, upon 
acceptance by SLC of the Source Code Reconciliation, the escrow established 
pursuant to Section 9 of the Master Agreement shall terminate and that the 
parties shall jointly instruct the escrow agent to disburse all escrowed 
materials to SLC.

      9.   AMENDMENT TO SOFTWARE VERSION CONTROL PROCEDURE.  The memorandum 
dated November 21, 1996, regarding software version control (PVCS) at the 
application source code level, attached to Amendment No. 2, is hereby 
deleted.  The parties agree that the source code referenced in the 
memorandum, and all future modifications to such source code will, at a time 
specified by SLC in consultation with Canmax, reside at the SLC test lab or 
at another location specified by SLC and that SLC, or its agent, shall assume 
responsibility for creation and maintenance of the "Golden Master" for store 
system deployment and all version control administration.   The SLC test lab 
(or other location specified by SLC) described above will be the single 
master source for all software maintenance, Golden Master creation, Third 
Party Software, new development and related items as identified on Exhibit A. 
 As part of the services referenced in Section 7 above, Canmax will, upon 
SLC's request, continue to assist SLC in connection with the maintenance of 
the Golden Master. SLC will provide access to source code to Canmax, from the 
SLC test lab (or other location specified by SLC), as required by Canmax in 
connection with any changes or modifications to the Source Code Materials 
requested by SLC.

      10.  LIMITATION OF RECOVERY.   Because SLC has obtained, pursuant to 
this Amendment, the license rights with respect to the Source Code Materials, 
the third sentence of Section 12.04(a) and the phrase "AND CANMAX ELECTS NOT 
TO GRANT THE SOURCE CODE LICENSE" contained in the second paragraph of 
Section 12.04(a) of the Master Agreement are hereby deleted.

      11.  REMOVAL OF WITHOUT CAUSE TERMINATION.  Section 13.03.6 of the 
Master Agreement pertaining to without cause termination is hereby deleted.

      12.  LOCATION OF SOURCE CODE. Upon Canmax written request, SLC will 
advise Canmax of each location of the source code as of the date of the 
request.

      13.  BANKRUPTCY.  Should Canmax, voluntarily or involuntarily, become 
subject to the protection of the United States bankruptcy laws, SLC shall be 
entitled to all of the benefits of such bankruptcy laws.  Pending the 
assumption or rejection of the Master Agreement, as amended by this 
Amendment, Canmax shall perform all of its obligations.  If Canmax or the 
trustee rejects the Master Agreement pursuant to such bankruptcy laws, SLC 
may elect to retain its rights under the Master Agreement and this Amendment, 
including all rights relating to the Source Code Materials and all other 
software or materials licensed by Canmax to SLC or owned jointly by Canmax 
and SLC.  If SLC elects to retain its rights, Canmax and/or the trustee shall 
allow SLC to exercise all such rights and Canmax and/or the trustee shall not 
interfere with the rights of SLC as provided in the Master Agreement and this 
Amendment to the Source Code 

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Materials and all other software or materials licensed by Canmax to SLC or 
owned jointly by Canmax and SLC.

      14.  COUNTERPARTS:  FACSIMILE SIGNATURES.  This Amendment may be 
executed in two or more counterparts, each of which, taken together, shall 
constitute one in the same original document.  This Amendment may be executed 
by facsimile originals. 

      15.  GOVERNING LAW.  This Amendment shall be governed and construed in 
accordance with the laws of the State of Texas.

      16.  INCONSISTENCY/EFFECT OF AMENDMENT.   This Amendment will control 
over any inconsistent provisions contained in the Master Agreement.  Except 
as modified by this Amendment, the Master Agreement shall remain in full 
force and effect in accordance with its terms.

      IN WITNESS WHEREOF, the parties have caused this Amendment No. 3 to be 
executed by their duly authorized officers on the dates set forth below their 
respective signatures.  The effective date of this Amendment will be the date 
it is fully executed.

THE SOUTHLAND CORPORATION                    CANMAX RETAIL SYSTEMS, INC.


By:                                          By:  
    -------------------------------              -----------------------------
    Executive Vice President                 Name:  
                                                    --------------------------
                                             Title:  
                                                    --------------------------
Attest:
By:                                          Date: 
    -------------------------------                 --------------------------
    J. Donald Stevenson, Jr.
    Assistant Secretary


Date: 
      -----------------------------

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                                       EXHIBIT B
                                           
                       CONFIDENTIALITY/NON-DISCLOSURE AGREEMENT
                                           

      This Confidentiality Agreement/Non-Disclosure Agreement  is given by 
________________________________ ("Recipient") as of the ___ day of ___________,
to Canmax Retail Systems, Inc. ("Canmax") and The Southland Corporation 
("Southland").  
               
      WHEREAS, Southland, pursuant to a license with Canmax, has obtained the 
right to certain software and related materials developed by Canmax, 
including rights to use, possess and modify the source code component thereof 
(the "Source Code Materials"), and
               
      WHEREAS, Southland intends to retain Recipient to make modifications 
and/or enhancements to the Source Code Materials. 
               
      WHEREAS, for and in consideration of these premises, Southland's 
agreement to retain Recipient to make the modifications or enhancements, and 
other good and valuable consideration the receipt and sufficiency of which is 
hereby acknowledged, Recipient agrees as follows:
               
      Recipient agrees that the Source Code Materials constitute proprietary 
information of Canmax and  (i) shall not be used by Recipient for any purpose 
other than that of rendering service to Southland or its franchisees, 
affiliates or licensees; (ii) shall not be disclosed, sold, assigned, leased 
or otherwise disposed of to third parties by Recipient or commercially 
exploited by or on behalf of Recipient; (iii) shall be treated by Recipient 
as confidential information in the same manner as Recipient treats its own 
confidential information of a similar nature; (iv) shall not be reverse 
engineered, reverse compiled or reverse assembled; and (v) shall be copied by 
Recipient only for archival or backup purposes only. Recipient agrees to take 
appropriate action by instruction, agreement or otherwise for those of its 
employees or third party agents having access to the Source Code Materials 
and restrict and control its use and security as provided in this Agreement. 
Recipient will leave intact in the confidential or proprietary rights notice 
placed on the Source Code Materials by Canmax. Recipient agrees that this 
Agreement may be enforced directly by Canmax.  

      Recipient shall indemnify Canmax and its successors and assigns for any 
losses, liabilities, damages, costs and expenses (including, without 
limitation, attorneys' fees) arising from Recipient's breach of any covenants 
contained in this letter.

      Recipient agrees to indemnify, defend and hold Southland, its 
affiliates, shareholders, directors, officers and employees, harmless from 
and against any suit, claim or demand by Canmax, its successors or assigns, 
arising from or related to Recipient's breach of this Agreement or other 
misappropriation or misuse by Recipient of the Source Code Materials or other 
proprietary rights of Canmax.  

      Executed as of the day and year first above written.
               
[Recipient]
               
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By: 
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Title: 
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