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 TouchStar Software or Support Services. 2.4 CHANGES IN TOUCHSTAR SOFTWARE AND SUPPORT SERVICES. TouchStar shall have the right at any time and from time to time, in its sole discretion, (a) to change the TouchStar Software or Support Services included within the scope of this Agreement by providing written notice to Reseller at least thirty (30) days prior to the date the change becomes effective and (b) to change the design, capabilities or other characteristics of the TouchStar Software or Support Services, or discontinue the production or marketing of all or any portion of the TouchStar Software or Support Services, without prior notice of any kind. Upgrades and enhancements to the TouchStar Software or Support Services shall automatically be deemed included as TouchStar Software or Support Services, as applicable, unless TouchStar notifies Reseller otherwise. 2.5 USE OF TOUCHSTAR SOFTWARE. (a) TouchStar hereby grants to Reseller, with the additional right to grant to Other Resellers who or which enter into an Other Reseller Agreement, the nontransferable and nonexclusive right and license to use one copy of the TouchStar Software as necessary to demonstrate the TouchStar Software to potential Customers in the Territory. Reseller shall not copy, modify, alter, Reverse Engineer or transfer, electronically or otherwise, any TouchStar Software. (b) TouchStar reserves the absolute right, without providing notice to Reseller, to include software code or other markings in the TouchStar Software (and the Private Label Software) to assist TouchStar in monitoring the compliance by Reseller and Other Resellers with their respective obligations not to copy, modify, alter, modify or Reverse Engineer the TouchStar Software. In addition, in order to protect TouchStar's rights in and to the TouchStar Software, THE TOUCHSTAR SOFTWARE MAY CONTAIN A PROPRIETARY SCHEME THAT ALLOWS TOUCHSTAR TO DISABLE USE OF THE TOUCHSTAR SOFTWARE BY RESELLER, ANY OTHER RESELLER, OR CUSTOMER. TOUCHSTAR MAY DISABLE THE TOUCHSTAR SOFTWARE IN THE EVENT THAT TOUCHSTAR DISCOVERS THAT RESELLER OR ANY OTHER RESELLER HAS, OR HAS ATTEMPTED TO, COPY, MODIFY, ALTER OR REVERSE ENGINEER THE TOUCHSTAR SOFTWARE. 2.6 LEADS FOR TOUCHSTAR SOFTWARE. Reseller shall solicit orders for TouchStar Software from potential Customers and shall submit such leads in writing to TouchStar (the "Registered Leads"). No Registered Leads shall be binding on TouchStar until accepted by TouchStar, and TouchStar reserves the right to reject any order or to cancel the same or any part of it after acceptance, for credit or for any other reason whatsoever deemed by TouchStar to be sufficient. Each Registered Lead shall include: (a) the name, address and telephone number of the Customer; (b) a list of the TouchStar Software and Support Services to be provided; (c) the delivery address for 7 the TouchStar Software, whether to Reseller or Customer; (d) the proposed shipment date; and (e) a reference to this Agreement. 2.7 LEAD TIMES. Registered Leads shall be submitted at least thirty (30) days prior to the requested shipping date for any TouchStar Software or Support Services. 3. TOUCHSTAR'S DUTIES. 3.1 AVAILABILITY OF SUPPORT SERVICES. TouchStar shall use reasonable commercial efforts to maintain or cause to be maintained the availability of the TouchStar Software and Support Services to Customers in the Territory. 3.2 MARKETING AND PROMOTIONAL LITERATURE. TouchStar shall provide to Reseller marketing presentations and other literature prepared by TouchStar in the ordinary course of business describing the TouchStar Software and Support Services in order to assist Reseller in the marketing of the Support Services in the Territory (the "Marketing Materials"). The Marketing Materials will contain some or all of the Trademarks. Reseller may include its trademarks, service marks or other logos on the Marketing Materials; provided that Reseller may not remove, replace or otherwise modify the Trademarks included on such Marketing Materials. 3.3 LICENSES. TouchStar shall grant to Reseller those Licenses necessary for Reseller to provide Support Services to Customers. TouchStar shall charge to Reseller the cost incurred by TouchStar to obtain such Licenses. 3.4 INSTALLATION. (a) At the request and on behalf of Reseller and any Other Reseller, TouchStar will install call center systems at Customer locations; PROVIDED that (i) TouchStar and Reseller or any Other Reseller, as applicable, agree in writing on the configuration of such call center systems (the "Specifications") and (ii) Reseller and any Other Reseller informs the Customer that TouchStar is installing the call center system on behalf of such Reseller or any Other Reseller. (b) TouchStar will use reasonable commercial efforts to install the call center system on behalf of Reseller or any Other Reseller in a timely fashion. However, TouchStar and
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Extract the exact clause related to "Parties" from the excerpt above.

assistant: Reseller