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 10.3 EXHIBIT C SUPPORT AND MAINTENANCE AGREEMENT SUPPORT AND MAINTENANCE AGREEMENT dated as of April __, 2005 (the "Effective Date"), between On2 Technologies, Inc., a Delaware corporation ("On2"), and Wildform, Inc., a California corporation ("Wildform"). Capitalized terms used herein and not defined herein shall have the meanings given to them in Asset Purchase Agreement (as defined below). WITNESSETH: WHEREAS, On2 and Wildform have entered into an Asset Purchase And Software License Agreement dated as of April 4, 2005 (the "Asset Purchase Agreement") pursuant to which, among other matters, Wildform has agreed to sell and license certain assets to On2; and WHEREAS, in connection with the Asset Purchase Agreement, On2 desires for Wildform to provide certain services to On2, and Wildform wishes to perform such services in accordance herewith. NOW, THEREFORE, subject to the terms, conditions, covenants and provisions of this Agreement, each of On2 and Wildform mutually covenant and agree as follows: ARTICLE I DEFINITIONS For purposes hereof, each of the following terms shall have the respective meaning set forth below, whether employed in the singular or plural, unless the particular context in which a term is used clearly indicates otherwise: 1.1 "Closing Date Payment Amount" shall have the meaning set forth in the Asset Purchase Agreement. 1.2 "Common Stock" means the common stock of On2, par value $0.01. 1.3 "Confidential Information" means any and all information disclosed by one Party (the "Disclosing Party") to the other Party (the "Receiving Party"), in any manner, prior to the Effective Date and thereafter during the Term. Confidential Information may include, but is not limited to, the following types of information and other information of a similar nature, in any form or medium, in any way perceived: trade secrets, software licensed on an evaluation basis hereunder (whether source code, executable code or otherwise), source code, inventions, art, drawings, schematics, files, file data, documentation, diagrams, specifications, know how, processes, formulas, flow charts, product criteria, research and development records, procedures, test results and samples, marketing techniques and materials, marketing and development plans, pricing data, price lists, business plans, information relating to customer identities, supplier or other source identities, and financial information. Confidential Information of a Disclosing Party may also include any information described above, whether or not owned or developed by it, and any such information Disclosing Party is obligated to keep confidential by way of a written agreement with a third party. Notwithstanding the foregoing, Confidential Information shall not include any of the foregoing that (i) is or becomes generally available to the public other than as a result of a disclosure by the Receiving Party, (ii) is rightfully in the possession of Receiving Party prior to disclosure by Disclosing Party, (iii) is received by Receiving Party from a third party having the right to make such disclosure and not under a confidentiality obligation to the Disclosing Party, or (iv) is independently developed by the Receiving Party without reference to or use of any Confidential Information of the Disclosing Party. 1.4 "Deliverable" means each item to be delivered by Wildform in accordance with Exhibit B hereto. 1.5 "Development Work" means the customization and integration of the Flix Software to be performed by Wildform and described on Exhibit B hereto 1.6 "Exchange Act" means the Securities and Exchange Act of 1934, as amended. 1.7 "Flix Software" means the following software in source code and object code form: Flix Pro 4 for Windows, Flix Pro 4 for Windows Demo, Flix Pro 3 for Mac, Flix Pro 3 for Mac Demo, Flix Engine 3.5 for Windows, Flix Engine 3.5 for Windows Demo, Flix Exporter 4 for Windows (including Flix FLV player) Flix Exporter 4 for Windows Demo (including Flix FLV player), Flix Exporter 4 for Mac (including Flix FLV player), Flix Exporter 4 for Mac Demo (including Flix FLV player), Flix Lite 3 for Windows, Flix Lite 3 for Windows Demo, Flix Lite 3 for Mac, Flix Lite 3 for Mac Demo. 1.8 "Incorporated Technology" means any technology or materials (including software source code) provided by On2 to Wildform in order for Wildform to perform the Development Work. 1.9 "Intellectual Property Rights" means all intellectual property rights arising under statutory or common law or any other legal system in the world, including that which is acquired or obtained under a contract with a third party, and whether or not perfected, comprising any of the following: (i) copyrights, copyright registrations, mask works and mask work registrations; (ii) rights relating to the protection of trade secrets and confidential
"""

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

assistant: April __, 2005