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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and will be effective as of the effective date indicated. The amount and timing of such change will be exclusively at Tripath's discretion. 6.3 Orders for Products received and acknowledged by Tripath prior to a change in the Price List but shipped after the effective date of such change will be invoiced as follows: (a) in the case of a price decrease, the existing order backlog will be invoiced at the lower price, and (b) in the case of a price increase, the existing order backlog due for delivery within one month of the effective date of such change will be invoiced at the lower price. Outstanding written quotations will be held good for the same two-month period. 6.4 Distributor's inventory of any Product will be price protected for reductions in the price of such Product as follows: the lesser of Distributor's (a) entire inventory of the Product, or (b) previous one month's shipments of the Product from Tripath. 7. Purchase Orders and Payment 7.1 Distributor will maintain sufficient inventory of Products (but not less than one month's inventory without Tripath's approval) to provide prompt delivery to Distributor's customers, in furtherance of Distributor's undertaking in Subsection 2.2. -2- Distributor Agreement 7.2 Distributor will purchase Products for resale to its customers in accordance with Tripath's then effective terms and conditions of sale set forth in the Tripath sales order acknowledgment ("Sales Order Acknowledgment"), and the pricing terms of the then effective Distributor Price List (including minimum order quantities). The terms and conditions of sale in the Sales Order Acknowledgment may be changed without prior notice, exclusively at Tripath's discretion. 7.3 No purchase order from Distributor is binding on Tripath until Tripath issues a Sales Order Acknowledgment to Distributor for such order, or makes a shipment against such order. Tripath will use commercially reasonable efforts to acknowledge Distributor purchase orders promptly. 7.4 Tripath will invoice Distributor for Products when Tripath ships such Products. 7.5 All credits will be handled as separate financial transactions from the original invoice, and will be evidenced by a written credit request submitted to Tripath. Distributor will not reduce any payment to Tripath to account for anticipated or unauthorized credits (except for short shipments and non-receipt of Products), either at the time of the payment of original invoice, or at the time of providing a credit request. Credit requests should be submitted by Distributor within one month after the date of Distributor's invoice for the related transactions. 7.6 Any credit request will be based on the price shown on the then current Distributor Price List, or the actual net price paid by Distributor for the Product, whichever is lower. 7.7 If Tripath notifies Distributor of any discrepancy in a credit request, Distributor has one month to resolve the discrepancy and pay the amount of the discrepancy. 7.8 No purchase orders for which a Sales Order Acknowledgment has been issued may be canceled or rescheduled within one month of the scheduled shipment date without Tripath's approval. 8. Special Pricing and Other Allowances 8.1 The provisions of this Section 8 will be applicable only to transactions on DPA (distributor price authorization) basis in which Distributor first obtains a DPA confirmation from Tripath. 8.2 Requests for special pricing and/or allowances will be submitted by Distributor to the appropriate Tripath sales office, and must be first approved in writing by that office. 8.3 Quotes for special pricing are good for one month, and must be backed by a Tripath quote number. Distributor will supply supporting documentation showing Products listed by part number, date of transaction, end customer name and address, and the appropriate special pricing details, not later than two weeks after shipment to the associated customer. 8.4 If Tripath has granted Distributor special pricing on a sale in which Distributor's customer has later returned the Product to Distributor, Distributor will reimburse Tripath for the amount of the DPA allowance within one month after such return. 8.5 Any debit memo submitted by Distributor for a DPA allowance will be based on the price shown on the then current Distributor Price List, or the actual net price paid by Distributor for the Product, whichever is lower. 9. Returns 9.1 Distributor may return Products only after receiving written authorization from Tripath. All authorized returns will be shipped by Distributor freight prepaid. Unauthorized returns may be reshipped to Distributor, freight collect. -3- Distributor Agreement 9.2 Distributor may request stock rotation return of slow moving Products, which will be authorized by Tripath provided that: (a) the
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Extract the exact clause related to "Parties" from the excerpt above.

assistant: Tripath