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:
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the franchise one (1) copy of our Confidential Operations Manual and other confidential manuals and written materials (all of which are collectively referred to herein as the "Manuals") containing reasonable, mandatory and suggested specifications, standards, operating procedures and rules prescribed from time to time by us for Buffalo Wild Wings businesses and information relative to your other obligations. You will not at any time, without our prior written consent, copy, duplicate, record or otherwise reproduce the Manuals in whole or in part or otherwise make the same available to any person. Any authorized duplication or copying of any of the Manuals shall be performed by us at your expense. We have the right to add to and otherwise modify, combine, or replace the Manuals from time to time to reflect changes in the specifications, standards, operating procedures and rules prescribed by us for Buffalo Wild Wings businesses, provided that no such addition or modification shall alter your fundamental status and rights under this Franchise Agreement. B. The Manuals shall at all times remain our sole property and shall promptly be returned upon the expiration or termination of this Agreement. C. The Manuals contain our proprietary information which you shall keep confidential both during the term of the franchise and subsequent to the expiration and/or termination of the franchise. You will at all times insure that your copy of the Manuals are available at the Franchised Restaurant premises in a current and up-to-date manner. At all times that the Manuals are not in use by authorized personnel, you will maintain the Manuals in a locked receptacle at the premises of the Franchised Restaurant, and will only grant authorized personnel, as defined in the Manuals, access to the key or lock combination of such receptacle. In the event of any dispute as to the contents of the Manuals, the terms of the master copy of the Manuals maintained by us at our home office will be controlling. VII. CONFIDENTIAL INFORMATION A. You acknowledge that your entire knowledge of the operation of a Buffalo Wild Wings business, including, without limitation, the method of preparation of Menu Items and other food products, and other specifications, recipes, standards and operating procedures of a Buffalo Wild Wings business is derived from information disclosed to you by us and that such information is proprietary, confidential and our trade secret. You will maintain the absolute confidentiality of all such information during and after the term of the franchise and you will not use any such information in any other business or in any manner not specifically authorized or approved in writing by us. B. You will divulge such confidential information only to the extent and only to such of your employees as must have access to it in order to operate the Franchised Restaurant. Any and all information, knowledge and know-how, including, without limitation, drawings, materials, equipment, techniques, restaurant systems, product formulae, recipes and other data which we designate as confidential will be deemed confidential for purposes of this Agreement, except information: 1) which you can demonstrate lawfully came to your attention prior to disclosure thereof by us, or 2) which, at the time of disclosure by us to you, had lawfully become a part of the public domain, through publication or communication by others, or 3) which, after disclosure to you by us, lawfully becomes a part of the public domain, through publication or communication by others. 7 C. Due to the special and unique nature of our confidential information, Marks and Manuals, you acknowledge that we will be entitled to immediate equitable remedies, including but not limited to, restraining orders and injunctive relief in order to safeguard our proprietary, confidential, unique, and special information and you acknowledge that money damages alone would be an insufficient remedy with which to compensate us for any breach of the terms of Paragraph V, VI and VII of this Agreement. All of your employees having access to our confidential and proprietary information and all of your shareholders, directors, officers, partners and/or members will be required to execute non-disclosure agreements in the form acceptable to us. VIII. MODIFICATION OF THE SYSTEM You acknowledge that from time to time we may change or modify the System presently identified by the Marks, including, without limitation, the adoption and use of new or modified trade names, trademarks, service marks or copyrighted materials, new Menu Items, new products, new equipment or new techniques. You will accept, use and display for the purpose of this Agreement
"""

Extract the exact clause related to "Effective Date" from the excerpt above.

assistant: Not found.