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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with Developer's license to Distributor, exclusive of taxes based on Developer's net income, shall be borne by Distributor. Distributor shall co-operate with and assist Developer, as reasonably necessary, to obtain United States tax credits for any duties or taxes described in this Section 2.5 which may be credited to and/or recovered by Developer and applied by Developer to reduce its United States tax liability. In the event Developer obtains any such tax credits, Developer shall notify Distributor of the amount thereof and Distributor shall be entitled to apply such amount against future amounts payable by Distributor to Developer hereunder. 6 7 3. MAINTENANCE AND SUPPORT. ----------------------- 3.1 Distributor Support ------------------- Distributor shall remain solely responsible for all installation, maintenance, consulting and support services to the End-Users with regard to the Products. Developer agrees to deliver to Distributor together with the first Order delivered to Distributor a copy of the Product to be used solely by Distributor's personnel providing installation, maintenance, consulting or support services to End-Users and shall only be used at Distributor's site. Distributor's failure to maintain the confidentiality of the Products pursuant to the terms of this Agreement shall be deemed a material breach of this Agreement. As mutually agreeable, Developer, Developer's affiliates, or Distributor may each provide local support to the sites of multi-location clients, each on behalf of the other where the provisions of such support will enhance the quality of support provided to the client. Such services will be provided at the local billing rate or such alternative billing rate as shall be agreed between the parties. The party providing the support shall receive all revenues arising therefrom unless otherwise agreed. Furthermore, it is understood that travel expenses, if any, are to be borne by the client utilizing the support services or by the Distributor unless otherwise agreed. For End-Users that have a World Wide Retainer in place, Distributor will provide local support in the Territory as defined in the World Wide Retainer (Schedule F). 3.2 Audit Rights. ------------ Distributor shall maintain accurate books and records of all End-User License Agreements granted for the Products (which will include at a minimum the location, type and number of products and sites, renewal and payment terms and any special conditions or terms), the End-Users receiving maintenance, and consulting and support services, payable under this Agreement. Upon reasonable notice to Distributor, Distributor shall make such books and records available to Developer, at Distributor's place of business during normal business hours, to audit the payments being made by Distributor hereunder. 3.3 End-User Training and Developer Consulting Services --------------------------------------------------- Distributor shall be solely responsible for the training of End-Users. Developer may be available at its then current standard rates to provide training, special enhancements, customization and other special work or services to either Distributor or End-Users. 7 8 4. CONFIDENTIALITY AND PROPRIETARY RIGHTS. -------------------------------------- 4.1 Confidentiality. --------------- Distributor acknowledges that in the course of dealings between the parties, Distributor may acquire information about Developer, its business activities and operations, its technical information and trade secrets, including but not limited to the Products, all of which are highly confidential and proprietary to Developer (the "Confidential Information"). Confidential Information shall not include information generally available to or known by the public, or information independently developed outside the scope of this Agreement. Distributor shall hold all such Confidential Information in strict confidence and shall not reveal or use the same except pursuant to a court order or upon written request of Developer. The Confidential Information shall be safeguarded with at least as great a degree of care as Distributor uses to safeguard its own most confidential materials or data relating to its own business, but in no event less than a reasonable degree of care. 4.2 Proprietary Rights. ------------------ Distributor acknowledges and agrees that the Products, and all copies thereof, constitute valuable trade secrets of Developer and/or proprietary and confidential information of Developer and title thereto remains in Developer. Ownership of all applicable copyrights, trade secrets, patents and other intellectual property rights in the Products are and shall remain vested in Developer. All other aspects of the Products, including without limitation, algorithms, models, programs, methods of processing, design and structure of individual programs and their interaction and programming techniques employed therein shall remain the sole and exclusive property of Developer and shall not be sold, revealed, disclosed or otherwise communicated, directly or indirectly, by Distributor to any person, company or entity whatsoever other than as expressly set forth herein. The copyright notice and
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Extract the exact clause related to "Irrevocable Or Perpetual License" from the excerpt above.

assistant: Not found.