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:
"""
by facsimile transmission or sent by certified, registered or express mail, postage prepaid. Any such notice shall be deemed given when so delivered personally, Page -12- telegraphed, telexed or sent by facsimile transmission or, if mailed, two (2) business days after the date of deposit in the United States mail, by certified mail return receipt requested, as follows: If to the Distributor to: Electric City of Illinois L.L.C. 8628 Oketo Avenue Bridgeview, IL 60455 Facsimile No. (708) 598-4671 Attn: Jim Stumpe With a copy to: Thomas V. McCauley 200 W. Adams, Suite 2500 Chicago, IL 60606 Facsimile No. (312) 346-9316 If to Company to: Electric City Corp. 1280 Lanmeier Rd. Elk Grove Village, IL 60007 Attn: Joseph Marino, President With a copy to: Kwaitt & Ruben, Ltd. 211 Waukegan Road Suite 300 Northfield, Illinois 60093 Attn: Philip E. Ruben, Esq. 6.5 Entire Agreement. This Agreement, together with all exhibits attached hereto which are hereby incorporated by reference, supersedes any and all other agreements, either oral or written, between the parties hereto with respect to the subject matter hereof and contains of the covenants and agreements between the parties with respect to said matter. This Agreement may not be altered, amended or modified, except by written instrument signed by the parties hereto. 6.6 Sample Products. Company will, during the Term of this Agreement (and any renewal term), provide Distributor, at Distributor's cost pursuant to the terms of this Agreement, with five (5) sample units (the "Sample" or "Samples") for use by Distributor in promoting sales. Distributor shall use the Samples for purposes of permitting potential customers to use the Products in the field. The Samples purchased by Distributor hereunder shall count toward the minimum expectations under this Agreement. 6.7 Time of the Essence. Time is of the essence of this Agreement. Page -13- 6.8 Force Majeure. Neither party to this Agreement shall be liable to the other party, nor shall be subject to injunctive relief by the other party if that party's performance of its duties or obligations under this Agreement is the consequence of Force Majeure as defined in Section 2.2 hereunder. 6.9 Governing Law. This Agreement is to be construed according to the laws of the State of Illinois. 7. NEW PRODUCTS 7.1 Right of Option. Should Company introduce other products or devices as contemplated by recital paragraph "A", Distributor shall have the option of becoming Company's exclusive distributor of such other Products or devices within the Market. 7.2 Exercise of Option. Distributor shall exercise its option to become exclusive Distributor of other Products or devices by serving written notification on Company of its election to become exclusive distributor within thirty (30) days upon which Company informed Distributor in writing of Company's intention to introduce other Products or devices. If Distributor does not exercise its option as herein provided, Company may distribute the other Products or devices within the Market itself or through other distributors. 7.3 Other Agreements. The terms pursuant to which such other Products or devices shall be sold by Company to Distributor shall be determined by a separate agreement, but such agreement shall be essentially on the same terms and conditions as herein provided, understanding that such terms as price, quotas, and length of the term of the agreement shall be reasonably adjusted to reflect the nature of the other Product or device which is the subject of the agreement. In witness whereof the parties have executed this Agreement as of the date first abovementioned. Electric City Corp. Electric City of Illinois L.L.C. By: /s/Joseph Marino By: Jim Stump ------------------- ------------------------------- President Page -14-
"""

Extract the exact clause related to "Irrevocable Or Perpetual License" from the excerpt above.

assistant: Not found.