system: You are a contract-analysis assistant performing a span-extraction task. You are given an excerpt from a commercial contract and the name of a clause type to locate within it.

Return the exact text of the requested clause, copied verbatim from the excerpt — identical wording and punctuation, with no paraphrasing, summarising, explanation, or added commentary.

The excerpt is one window of a much longer contract and often will not contain the requested clause. If the requested clause does not appear in this excerpt, respond with exactly: Not found.

Output only the extracted clause text, or the exact string `Not found.` — nothing else.

user: Contract excerpt:
"""
Exhibit 10.13 SOFTWARE LICENSE AND MAINTENANCE AGREEMENT BETWEEN GARMAN ROUTING SYSTEMS, INC. ("GARMAN") AND SPARKLING SPRING WATER GROUP LIMITED ("SPARKLING") WHEREAS Garman has developed and is entitled to license to others certain software and supporting materials which Sparkling wishes to license, the parties agree as follows: 1. DEFINITIONS AND SCHEDULES In this Agreement the following definitions shall apply: (a) Authorized Locations means the locations listed in Schedule "C." (b) Confidential Information has the meaning specified in Section 14. (c) Documentation means the documentation related to use of the Software described in Schedule "B." (d) Maintenance Commencement Date means the date that acceptance testing is successfully completed at all of the Authorized Locations. (e) Maintenance Services means the Software Update Service, Telephone Support Service and Software Repair Service described in Section 10. (f) Modifications means the modifications set out in Schedule "D." (g) Person includes an individual, corporation, partnership, joint venture, trust, unincorporated organization, the Crown or any agency or instrumentality thereof or any other judicial entity recognized by law. (h) Software means the software described in Schedule "B." (i) Specifications means the specifications set out in Schedule "D." (j) Work means the Software and the Documentation collectively. The following is a summary of the Schedules, which shall form an integral part of this Agreement: PAGE 1 Schedule "A": Fee Schedule. Schedule "B": Software and Documentation. Schedule "C": Authorized Locations and Software copies for Authorized Locations. Schedule "D": Specifications, Modifications, Data Conversion. Schedule "E": Implementation and Training. Schedule "F": Telephone Support Schedule. 2. GRANT OF LICENSE Garman hereby grants to Sparkling, for the use of Sparkling and affiliated companies of Sparkling operating at Authorized Locations, a non-transferable and non-exclusive licence to use: (i) the Software, safely in executable object code format, at each AS400 at each of the Authorized Locations; and (ii) the Documentation. Sparkling's right, if any, to use the Software and Documentation at locations other than the Authorized Locations is subject to the payment of additional fees in accordance with the Fee Schedule. 3. RESTRICTIONS ON USE Sparkling shall: (a) not copy the Software except to copy it onto another AS400 at the Authorized Locations and to make copies of the Software at each Authorized Location solely for backup purposes; (b) not copy any of the Documentation except as required for Sparkling's internal purposes related to Sparkling's use of the Software; (c) not assign this Agreement or transfer, lease, export or grant a sublicence of the Work to any Person, except as and when authorized to do so by Garman in writing; (d) not reverse engineer, decompile or disassemble the Software; (e) not use the Work except as authorized herein; (f) take all reasonable precautions to prevent third parties from using the Work in any way that would constitute a breach of this Agreement including, without limitation, such precautions as Sparkling would otherwise take to protect its own proprietary software or hardware or information; and PAGE 2 (g) not use the Work to act as a service bureau in whole or in part, for any other Person, except for any affiliate of Sparkling operating at the Authorized Locations. 4. DELIVERY, INSTALLATION AND DATA CONVERSION (a) In accordance with Schedule "C," Garman has delivered the required number of copies of the executable object code of the Software to those Authorized Locations (together with copies of the Documentation as is reasonably required by Sparkling to operate the Software in the manner contemplated hereunder) and installed the Software on the applicable AS400's at each Authorized Location. The installation of the Software at each existing Authorized Location shall be deemed to be completed including contracted changes and has been properly installed, is in good working order. Modifications and changes shall fall within the 60 day testing period at which time they are deemed to be completed and has been properly installed, is in good working order. (b) For Future Installations and Conversions at an existing or new Authorized Location, Garman shall be available for Contracting required installation and conversion tasks as reasonably required, in consultation with and with the reasonable assistance of Sparkling, including conversion of Sparkling's data, as more particularly described in Schedule "D," from its current electronic form into a form suitable for processing with the Software and as required for the testing of the Software and for use of the Software as contemplated hereunder. 5. TRAINING In conjunction with the installation of the Software at each existing or new Authorized Location, and prior to the commencement of acceptance testing at
"""

Extract the exact clause related to "Anti-Assignment" from the excerpt above.

assistant: (c) not assign this Agreement or transfer, lease, export or grant a sublicence of the Work to any Person, except as and when authorized to do so by Garman in writing;