BT ZEUS OPEN SOURCE LICENCE (L77741)
Version 1.0

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1. Definitions.

• 1.1. "BT" means British Telecommunications public limited company, whose registered office is at 81 Newgate Street, London, EC1A 7AJ, England.
• 1.2. "Contributor" means each entity that creates or contributes to the creation of Modifications.
• 1.3. "Contributor Version" means the combination of the Original Code, prior Modifications used by a Contributor, and the Modifications made by that particular Contributor.
• 1.4. "Covered Code" means the Original Code or Modifications or the combination of the Original Code and Modifications, or, in each case, portions thereof.
• 1.5. "Electronic Distribution Mechanism" means a mechanism generally accepted in the software development community for the electronic transfer of data.
• 1.6. "Executable" means Covered Code in any form other than Source Code.
• 1.7. "Initial Developer" means the individual or entity identified as the Initial Developer in the Source Code notice required by Exhibit A.
• 1.8. "Larger Work" means a work which combines Covered Code or portions thereof with code not governed by the terms of this Licence.
• 1.9. "Licence" means this document.
• 1.10. "Modifications" means any addition to or alteration of the substance or structure of either the Original Code or any previous Modifications.
• 1.11. "Original Code" means Source Code of computer software code which is described in the Source Code notice required by Exhibit A as Original Code, and which, at the time of its release under this Licence is not already Covered Code governed by this Licence.
• 1.12. "Source Code" means the preferred form of the Covered Code for making modifications to it, including all modules it contains, plus any associated interface definition files, scripts used to control compilation and installation of an Executable, or a list of source code differential comparisons against either the Original Code or another well known, available Covered Code of the Contributor's choice. The Source Code can be in a compressed or archival form, provided the appropriate decompression or de-archiving software is widely available for no charge.
• 1.13. "You" means an individual or a legal entity exercising rights under, and complying with all of the terms of, this Licence or a future version of this Licence issued under Section 6.1.

2. Source Code Licence.

• 2.1. The Initial Developer Grant.
  The Initial Developer hereby grants You a world-wide, royalty-free, non-exclusive Licence, subject to third party intellectual property claims:
• (a) to use, reproduce, modify, display, perform, sublicense and distribute the Original Code (or portions thereof) with or without Modifications, or as part of a Larger Work; and
• (b) under patents now or hereafter owned or controlled by Initial Developer, to make, have made, use and sell ("Utilise") the Original Code (or portions thereof), but solely to the extent that any such patent is reasonably necessary to enable You to Utilise the Original Code (or portions thereof) and not to any greater extent that may be necessary to Utilise further Modifications or combinations.
• 2.2. Contributor Grant.
  Each Contributor hereby grants You a world-wide, royalty-free, non-exclusive Licence, subject to third party intellectual property claims:
• (a) to use, reproduce, modify, display, perform, sublicense and distribute the Modifications created by such Contributor (or portions thereof) either on an unmodified basis, with other Modifications, as Covered Code or as part of a Larger Work; and
• (b) under patents now or hereafter owned or controlled by Contributor, to Utilise the Contributor Version (or portions thereof), but solely to the extent that any such patent is reasonably necessary to enable You to Utilise the Contributor Version (or portions thereof), and not to any greater extent that may be necessary to Utilise further Modifications or combinations.

3. Distribution Obligations.

• 3.1. Application of Licence.
  The Modifications which You create or to which You contribute are governed by the terms of this Licence, including without limitation Section 2.2. The Source Code version of Covered Code may be distributed only under the terms of this Licence or a future version of this Licence released under Section 6.1, and You must include a copy of this Licence with every copy of the Source Code You distribute. You may not offer or impose any terms on any Source Code version that alters or restricts the applicable version of this Licence or the recipients' rights hereunder. However, You may include an additional document offering the additional rights described in Section 3.5.

• 3.2. Availability of Source Code.
  Any Modification which You create or to which You contribute must be made available in Source Code form under the terms of this Licence either on the same media as an Executable version or via an accepted Electronic Distribution Mechanism to anyone to whom you made an Executable version available; and if made available via Electronic Distribution Mechanism, must remain available for at least twelve (12) months after the date it initially became available, or at least six (6) months after a subsequent version of that particular Modification has been made available to such recipients. You are responsible for ensuring that the Source Code version remains available even if the Electronic Distribution Mechanism is maintained by a third party.
• 3.3. Description of Modifications.
  You must cause all Covered Code to which you contribute to contain a file documenting the changes You made to create that Covered Code and the date of any change. You must include a prominent statement that the Modification is derived, directly or indirectly, from Original Code provided by the Initial Developer and including the name of the Initial Developer in (a) the Source Code, and (b) in any notice in an Executable version or related documentation in which You describe the origin or ownership of the Covered Code.
• 3.4. Intellectual Property Matters
• (a) Third Party Claims.
  If You have knowledge that a party claims an intellectual property right in particular functionality or code (or its utilisation under this Licence), you must include a text file with the source code distribution titled "LEGAL" which describes the claim and the party making the claim in sufficient detail that a recipient will know whom to contact. If you obtain such knowledge after You make Your Modification available as described in Section 3.2, You shall promptly modify the LEGAL file in all copies You make available thereafter and shall take other steps (such as notifying appropriate mailing lists or newsgroups) reasonably calculated to inform those who received the Covered Code that new knowledge has been obtained.
• (b) Contributor APIs.
  If Your Modification is an application programming interface and You own or control patents which are reasonably necessary to implement that API, you must also include this information in the LEGAL file.
• 3.5. Required Notices.
  You must duplicate the notice in Exhibit A in each file of the Source Code, and this Licence in any documentation for the Source Code, where You describe recipients' rights relating to Covered Code. If You created one or more Modification(s), You may add your name as a Contributor to the notice described in Exhibit A. If it is not possible to put such notice in a particular Source Code file due to its structure, then you must include such notice in a location (such as a relevant directory file) where a user would be likely to look for such a notice. You may choose to offer, and to charge a fee for, warranty, support, indemnity or liability obligations to one or more recipients of Covered Code. However, You may do so only on Your own behalf, and not on behalf of the Initial Developer or any Contributor. You must make it absolutely clear than any such warranty, support, indemnity or liability obligation is offered by You alone, and You hereby agree to indemnify the Initial Developer and every Contributor for any liability incurred by the Initial Developer or such Contributor as a result of warranty, support, indemnity or liability terms You offer.
• 3.6. Distribution of Executable Versions.
  You may distribute Covered Code in Executable form only if the requirements of Section 3.1-3.5 have been met for that Covered Code, and if You include a notice stating that the Source Code version of the Covered Code is available under the terms of this Licence, including a description of how and where You have fulfilled the obligations of Section 3.2. The notice must be conspicuously included in any notice in an Executable version, related documentation or collateral in which You describe recipients' rights relating to the Covered Code. You may distribute the Executable version of Covered Code under a Licence of Your choice, which may contain terms different from this Licence, provided that You are in compliance with the terms of this Licence and that the Licence for the Executable version does not attempt to limit or alter the recipient's rights in the Source Code version from the rights set forth in this Licence. If You distribute the Executable version under a different Licence You must make it absolutely clear that any terms which differ from this Licence are offered by You alone, not by the Initial Developer or any Contributor. You hereby agree to indemnify the Initial Developer and every Contributor for any liability incurred by the Initial Developer or such Contributor as a result of any such terms You offer.
• 3.7. Larger Works.
  You may create a Larger Work by combining Covered Code with other code not governed by the terms of this Licence and distribute the Larger Work as a single product. In such a case, You must make sure the requirements of this Licence are fulfilled for the Covered Code.

4. Inability to Comply Due to Statute or Regulation.

• If it is impossible for You to comply with any of the terms of this Licence with respect to some or all of the Covered Code due to statute or regulation then You must: (a) comply with the terms of this Licence to the maximum extent possible; and (b) describe the limitations and the code they affect. Such description must be included in the LEGAL file described in Section 3.4 and must be included with all distributions of the Source Code. Except to the extent prohibited by statute or regulation, such description must be sufficiently detailed for a recipient of ordinary skill to be able to understand it.

5. Application of this Licence.

• This Licence applies to code to which the Initial Developer has attached the notice in Exhibit A, and to related Covered Code.

6. Versions of the Licence.

• 6.1. New Versions.
  BT may publish revised and/or new versions of the Licence from time to time. Each version will be given a distinguishing version number.

• 6.2. Effect of New Versions.
  Once Covered Code has been published under a particular version of the Licence, You may always continue to use it under the terms of that version. You may also choose to use such Covered Code under the terms of any subsequent version of the Licence published by BT. No one other than BT has the right to modify the terms applicable to Covered Code created under this Licence.
• 6.3. Derivative Works.
  If you create or use a modified version of this Licence (which you may only do in order to apply it to code which is not already Covered Code governed by this Licence), the phrases "BT", "British Telecommunications" or "ZEUS" or any confusingly similar phrase must not appear anywhere in your Licence in such as way as to suggest a connection between the subject matter of Your Licence and these expressions or the entities they represent. (Filling in the name of the Initial Developer, Original Code or Contributor in the notice described in Exhibit A shall not of themselves be deemed to be modifications of this Licence.)
  
  7. DISCLAIMER OF WARRANTY.
• THE INITIAL DEVELOPER AND EACH CONTRIBUTOR WARRANTS THAT IT HAS THE RIGHT TO GRANT THE LICENCES CONTAINED HEREIN UNDER THE COPYRIGHT IN ITS ORIGINAL CODE OR ITS MODIFICATIONS. IN ALL OTHER RESPECTS COVERED CODE IS PROVIDED UNDER THIS LICENCE ON AN "AS IS" BASIS, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION, WARRANTIES THAT THE COVERED CODE IS FREE OF DEFECTS, MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE OR NON-INFRINGING OF OTHER INTELLECTUAL PROPERTY RIGHTS. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE COVERED CODE IS WITH YOU. SHOULD ANY COVERED CODE PROVE DEFECTIVE IN ANY RESPECT, YOU (NOT THE INITIAL DEVELOPER OR ANY OTHER CONTRIBUTOR) ASSUME THE COST OF ANY NECESSARY SERVICING, REPAIR OR CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENCE. NO USE OF ANY COVERED CODE IS AUTHORISED HEREUNDER EXCEPT UNDER THIS DISCLAIMER.

8. TERMINATION.

• 8.1 This Licence and the rights granted hereunder will terminate automatically if You fail to comply with terms herein and fail to cure such breach within 30 days of becoming aware of the breach. All sublicenses to the Covered Code which are properly granted shall survive any termination of this Licence. Provisions which, by their nature, must remain in effect beyond the termination of this Licence shall survive.
• 8.2. If You initiate patent infringement litigation against the Initial Developer or a Contributor (either hereinafter referred to as "Participant") alleging that such Participant's Original Code or Contributor Version directly or indirectly infringes any patent, then any and all rights granted by such Participant to You under Sections 2.1 and/or 2.2 of this License shall, upon 60 days notice from Participant terminate, unless within the 60 days You either:
• (i) agree in writing to pay Participant a mutually agreeable reasonable royalty for Your past and future use of the Original Code or the Modifications made by such Participant, or
• (ii) withdraw Your litigation claim with respect to the Original Code or the Contributor Version against such Participant. If within 60 days of notice, a reasonable royalty and payment arrangement are not mutually agreed upon in writing by the parties or the litigation claim is not withdrawn, the rights granted by Participant to You under Sections 2.1 and/or 2.2 automatically terminate at the expiration of the 60 day notice period specified above.
• 8.3. If You assert a patent infringement claim against Participant alleging that such Participant's Original Code or Contributor Version directly or indirectly infringes any patent where such claim is resolved (such as by license or settlement) prior to the initiation of patent infringement litigation, then the reasonable value of the licenses granted by such Participant under Sections 2.1 or 2.2 shall be taken into account in determining the amount or value of any payment or license.

• 8.4. In the event of termination under Sections 8.1 or 8.2 above, all end user license agreements (excluding distributors and resellers) which have been validly granted by You or any distributor hereunder prior to termination shall survive termination.

9. LIMITATION OF LIABILITY.

• UNDER NO CIRCUMSTANCES AND UNDER NO LEGAL THEORY, WHETHER TORT (INCLUDING NEGLIGENCE), CONTRACT, OR OTHERWISE, SHALL THE INITIAL DEVELOPER, ANY OTHER CONTRIBUTOR, OR ANY DISTRIBUTOR OF COVERED CODE, OR ANY SUPPLIER OF ANY OF SUCH PARTIES, BE LIABLE TO YOU OR ANY OTHER PERSON FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES OF ANY CHARACTER INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF GOODWILL, WORK STOPPAGE, COMPUTER FAILURE OR MALFUNCTION, OR ANY AND ALL OTHER COMMERCIAL DAMAGES OR LOSSES, EVEN IF SUCH PARTY SHALL HAVE BEEN INFORMED OF THE POSSIBILITY OF SUCH DAMAGES. THIS LIMITATION OF LIABILITY SHALL NOT APPLY TO LIABILITY FOR DEATH OR PERSONAL INJURY RESULTING FROM SUCH PARTY'S NEGLIGENCE TO THE EXTENT APPLICABLE LAW PROHIBITS SUCH LIMITATION.

10. MISCELLANEOUS.

• This Licence represents the complete agreement concerning subject matter hereof. If any provision of this Licence is held to be unenforceable, such provision shall be reformed only to the extent necessary to make it enforceable, having as close a meaning to the original as is possible in the circumstances. This Licence shall be governed by English law except to the extent applicable law, if any, provides otherwise. In the event of any dispute relating to this Licence, the parties will seek to resolve the dispute amicably. If the matter (excepting any dispute relating to intellectual property rights) is not resolved amicably within 30 days, at the request of either party, the parties will refer the dispute to the Centre for Dispute Resolution, Princes House, 95 Gresham Street, London EC2V 7NA, England (http://www.cedr.co.uk); whose guidelines will be followed. Any litigation relating to this Agreement shall be subject to the jurisdiction of the English courts.

11. RESPONSIBILITY FOR CLAIMS.

• Except in cases where another Contributor has failed to comply with Section 3.4, You are responsible for damages arising, directly or indirectly, out of Your utilisation of rights under this Licence, based on the number of copies of Covered Code you made available, the revenues you received from utilising such rights, and other relevant factors. You agree to work with affected parties to distribute responsibility on an equitable basis.

EXHIBIT A.

• "The contents of this file are subject to the BT "ZEUS" Open Source Licence, Version 1.0 (the "Licence"); you may not use this file except in compliance with the Licence.
  You may obtain a copy of the Licence from here.
• Except as stated in Clause 7 of the Licence, software distributed under the Licence is distributed WITHOUT WARRANTY OF ANY KIND, either express or implied. See the Licence for the specific language governing rights and limitations under the Licence.
• The Original Code is within the package zeus.*.
• The Initial Developer of the Original Code is British Telecommunications public limited company, whose registered office is at 81 Newgate Street, London, EC1A 7AJ, England. Portions created by British Telecommunications public limited company are Copyright 1996-9. All Rights Reserved.
• Contributor(s): To be listed here
  
• Acknowledgements:
  
  • Zeus uses the Gnu regular expression parser, written by Wes Biggs and the Gnu Regexp team
• THIS NOTICE MUST BE INCLUDED ON ANY COPY OF THIS FILE (See Licence for details)"