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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on the use of the Product for the Designated Support Contact(s), and any other employee substituting or replacing the Designated Support Contact(s); (c) Subject to Licensee's applicable security requirements, provide XACCT with access to and use of all information and system facilities including but not limited to a modem connection to Licensee's systems determined necessary by XACCT to provide timely Support Services pursuant to this Agreement; (d) Follow operating instructions and procedures as specified in, but not limited to, XACCT's documentation and other correspondence related to the Product; (e) Follow procedures and recommendations provided by the XACCT support center in an effort to correct problems; or (f) Notify XACCT of a malfunction or other problem in accordance with XACCT's then current problem reporting procedures and as provided in Attachment 1. If XACCT determines that a problem reported by Licensee is not due to an error in the Product, XACCT will so notify Licensee. XACCT may in its sole discretion charge additional fees for time and materials for the resolution of problems that are not attributable to an error in the Product or which are excluded from XACCT's support obligations as set forth below. 3.5 XACCT shall have no obligation to support: (a) altered, damaged or Licensee-modified Product, or any portion of the Product incorporated with or into other software other than as contemplated by XACCT's documentation or as otherwise expressly approved by XACCT in writing; (b) any version of the Product other than the current version of the Product, the immediately previous version and the version preceding the immediately previous version; XACCT's obligation to support the version prior to the immediately previous version shall not extend beyond six (6) months after the release of the current Major Release of the Product; (c) Product problems caused by Licensee's negligence, abuse or misapplication, use of Product other than as specified in the XACCT documentation, or other causes beyond the reasonable control of XACCT; (d) Product installed on any hardware, operating system version or network environment that is not supported by XACCT; or (e) Incidents if XACCT makes a good faith determination that the primary cause of the problem results from the failure or malfunction of any system, equipment, facilities or devices not furnished by XACCT. 3.6 Any obligation for Support for non-standard versions of the Product or portions thereof developed for Licensee on a customized basis shall be only as set forth in an amendment or other supplement to this Agreement. 4. PRODUCT MAINTENANCE 4.1 XACCT will use reasonable commercial efforts to provide maintenance releases and Minor Releases to the then-current embodiment of the Product that it provides to its customers generally. Maintenance Releases and Minor Releases may also include one copy of revisions to the documentation applicable to such maintenance releases and Minor Releases. 4.2 From time to time XACCT in its sole discretion may develop and provide Major Releases which will be made available to Licensee with or without additional fees according to the level of Support Services purchased by Licensee as set forth in Attachment 1 referenced in Section 2. 4.3 THE TERMS OF THE LICENSE AGREEMENT PERTAINING TO LIMITED WARRANTY, DISCLAIMERS OF WARRANTY AND LIMITATION OF LIABILITY SHALL APPLY TO THE MAJOR AND MINOR RELEASES OF PRODUCT DELIVERED ACCORDING TO THIS AGREEMENT. 5. TERM AND TERMINATION 5.1 The initial term of this Agreement is one (1) year from the date of delivery of the Product to Licensee unless earlier terminated in accordance with this Agreement. The Agreement will be automatically renewed for additional one (1) year terms (subject to applicable fee adjustments) unless thirty (30) days prior to the anniversary of the Effective Date Licensee gives written notice to XACCT of its intention not to renew. 5.2 XACCT may suspend or terminate Product Maintenance and Support Services if Licensee fails to timely pay Product Maintenance and Support Service fees as provided in this Agreement. XACCT may also terminate Support Services if Licensee breaches any provision of this Agreement or the License Agreement and such breach is not remedied within thirty (30) days after Licensee receives written notice of the breach. XACCT shall also have the right not to renew this Agreement with respect to any Product by providing written notice of such election at least sixty (60) days prior to the termination of Support Services for such Product, provided that XACCT no longer generally provides Support Services for such Product, or no longer provides the specific Support Services previously offered. 5.3 Product Maintenance and Support Services shall automatically
"""

Extract the exact clause related to "Source Code Escrow" from the excerpt above.

assistant: Not found.