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GNU AFFERO GENERAL PUBLIC LICENSE

   Version 3, 19 November 2007

   Copyright © 2007 Free Software Foundation, Inc. 
   Everyone is permitted to copy and distribute verbatim copies of this license
   document, but changing it is not allowed.

Preamble

   The GNU Affero General Public License is a free, copyleft license for software
   and other kinds of works, specifically designed to ensure cooperation with the
   community in the case of network server software.

   The licenses for most software and other practical works are designed to take
   away your freedom to share and change the works. By contrast, our General Public
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   of a program--to make sure it remains free software for all its users.

   When we speak of free software, we are referring to freedom, not price. Our
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   these things.

   Developers that use our General Public Licenses protect your rights with two
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   A secondary benefit of defending all users' freedom is that improvements made in
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   available for other developers to incorporate. Many developers of free software
   are heartened and encouraged by the resulting cooperation. However, in the case
   of software used on network servers, this result may fail to come about. The GNU
   General Public License permits making a modified version and letting the public
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   The GNU Affero General Public License is designed specifically to ensure that, in
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   to the source code of the modified version.

   An older license, called the Affero General Public License and published by
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   not a version of the Affero GPL, but Affero has released a new version of the
   Affero GPL which permits relicensing under this license.

   The precise terms and conditions for copying, distribution and modification
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TERMS AND CONDITIONS

0. Definitions.

   "This License" refers to version 3 of the GNU Affero General Public License.

   "Copyright" also means copyright-like laws that apply to other kinds of works,
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   To "convey" a work means any kind of propagation that enables other parties to
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   An interactive user interface displays "Appropriate Legal Notices" to the extent
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1. Source Code.

   The "source code" for a work means the preferred form of the work for making
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   The Corresponding Source need not include anything that users can regenerate
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   The Corresponding Source for a work in source code form is that same work.

2. Basic Permissions.

   All rights granted under this License are granted for the term of copyright on
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4. Conveying Verbatim Copies.

   You may convey verbatim copies of the Program's source code as you receive it, in
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   You may convey a work based on the Program, or the modifications to produce it
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     * d) If the work has interactive user interfaces, each must display Appropriate
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   A compilation of a covered work with other separate and independent works, which
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6. Conveying Non-Source Forms.

   You may convey a covered work in object code form under the terms of sections 4
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   under the terms of this License, in one of these ways:
     * a) Convey the object code in, or embodied in, a physical product (including a
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     * b) Convey the object code in, or embodied in, a physical product (including a
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     * d) Convey the object code by offering access from a designated place (gratis
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     * e) Convey the object code using peer-to-peer transmission, provided you
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   A separable portion of the object code, whose source code is excluded from the
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   A "User Product" is either (1) a "consumer product", which means any tangible
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   If you convey an object code work under this section in, or with, or specifically
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   The requirement to provide Installation Information does not include a
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   Corresponding Source conveyed, and Installation Information provided, in accord
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7. Additional Terms.

   "Additional permissions" are terms that supplement the terms of this License by
   making exceptions from one or more of its conditions. Additional permissions that
   are applicable to the entire Program shall be treated as though they were
   included in this License, to the extent that they are valid under applicable law.
   If additional permissions apply only to part of the Program, that part may be
   used separately under those permissions, but the entire Program remains governed
   by this License without regard to the additional permissions.

   When you convey a copy of a covered work, you may at your option remove any
   additional permissions from that copy, or from any part of it. (Additional
   permissions may be written to require their own removal in certain cases when you
   modify the work.) You may place additional permissions on material, added by you
   to a covered work, for which you have or can give appropriate copyright
   permission.

   Notwithstanding any other provision of this License, for material you add to a
   covered work, you may (if authorized by the copyright holders of that material)
   supplement the terms of this License with terms:
     * a) Disclaiming warranty or limiting liability differently from the terms of
       sections 15 and 16 of this License; or
     * b) Requiring preservation of specified reasonable legal notices or author
       attributions in that material or in the Appropriate Legal Notices displayed
       by works containing it; or
     * c) Prohibiting misrepresentation of the origin of that material, or requiring
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   All other non-permissive additional terms are considered "further restrictions"
   within the meaning of section 10. If the Program as you received it, or any part
   of it, contains a notice stating that it is governed by this License along with a
   term that is a further restriction, you may remove that term. If a license
   document contains a further restriction but permits relicensing or conveying
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   If you add terms to a covered work in accord with this section, you must place,
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   Additional terms, permissive or non-permissive, may be stated in the form of a
   separately written license, or stated as exceptions; the above requirements apply
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8. Termination.

   You may not propagate or modify a covered work except as expressly provided under
   this License. Any attempt otherwise to propagate or modify it is void, and will
   automatically terminate your rights under this License (including any patent
   licenses granted under the third paragraph of section 11).

   However, if you cease all violation of this License, then your license from a
   particular copyright holder is reinstated (a) provisionally, unless and until the
   copyright holder explicitly and finally terminates your license, and (b)
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   reasonable means prior to 60 days after the cessation.

   Moreover, your license from a particular copyright holder is reinstated
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   violation prior to 30 days after your receipt of the notice.

   Termination of your rights under this section does not terminate the licenses of
   parties who have received copies or rights from you under this License. If your
   rights have been terminated and not permanently reinstated, you do not qualify to
   receive new licenses for the same material under section 10.

9. Acceptance Not Required for Having Copies.

   You are not required to accept this License in order to receive or run a copy of
   the Program. Ancillary propagation of a covered work occurring solely as a
   consequence of using peer-to-peer transmission to receive a copy likewise does
   not require acceptance. However, nothing other than this License grants you
   permission to propagate or modify any covered work. These actions infringe
   copyright if you do not accept this License. Therefore, by modifying or
   propagating a covered work, you indicate your acceptance of this License to do
   so.

10. Automatic Licensing of Downstream Recipients.

   Each time you convey a covered work, the recipient automatically receives a
   license from the original licensors, to run, modify and propagate that work,
   subject to this License. You are not responsible for enforcing compliance by
   third parties with this License.

   An "entity transaction" is a transaction transferring control of an organization,
   or substantially all assets of one, or subdividing an organization, or merging
   organizations. If propagation of a covered work results from an entity
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   Corresponding Source of the work from the predecessor in interest, if the
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   You may not impose any further restrictions on the exercise of the rights granted
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   you may not initiate litigation (including a cross-claim or counterclaim in a
   lawsuit) alleging that any patent claim is infringed by making, using, selling,
   offering for sale, or importing the Program or any portion of it.

11. Patents.

   A "contributor" is a copyright holder who authorizes use under this License of
   the Program or a work on which the Program is based. The work thus licensed is
   called the contributor's "contributor version".

   A contributor's "essential patent claims" are all patent claims owned or
   controlled by the contributor, whether already acquired or hereafter acquired,
   that would be infringed by some manner, permitted by this License, of making,
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   be infringed only as a consequence of further modification of the contributor
   version. For purposes of this definition, "control" includes the right to grant
   patent sublicenses in a manner consistent with the requirements of this License.

   Each contributor grants you a non-exclusive, worldwide, royalty-free patent
   license under the contributor's essential patent claims, to make, use, sell,
   offer for sale, import and otherwise run, modify and propagate the contents of
   its contributor version.

   In the following three paragraphs, a "patent license" is any express agreement or
   commitment, however denominated, not to enforce a patent (such as an express
   permission to practice a patent or covenant not to sue for patent infringement).
   To "grant" such a patent license to a party means to make such an agreement or
   commitment not to enforce a patent against the party.

   If you convey a covered work, knowingly relying on a patent license, and the
   Corresponding Source of the work is not available for anyone to copy, free of
   charge and under the terms of this License, through a publicly available network
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   Corresponding Source to be so available, or (2) arrange to deprive yourself of
   the benefit of the patent license for this particular work, or (3) arrange, in a
   manner consistent with the requirements of this License, to extend the patent
   license to downstream recipients. "Knowingly relying" means you have actual
   knowledge that, but for the patent license, your conveying the covered work in a
   country, or your recipient's use of the covered work in a country, would infringe
   one or more identifiable patents in that country that you have reason to believe
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   If, pursuant to or in connection with a single transaction or arrangement, you
   convey, or propagate by procuring conveyance of, a covered work, and grant a
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   to use, propagate, modify or convey a specific copy of the covered work, then the
   patent license you grant is automatically extended to all recipients of the
   covered work and works based on it.

   A patent license is "discriminatory" if it does not include within the scope of
   its coverage, prohibits the exercise of, or is conditioned on the non-exercise of
   one or more of the rights that are specifically granted under this License. You
   may not convey a covered work if you are a party to an arrangement with a third
   party that is in the business of distributing software, under which you make
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   work, and under which the third party grants, to any of the parties who would
   receive the covered work from you, a discriminatory patent license (a) in
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   arrangement, or that patent license was granted, prior to 28 March 2007.

   Nothing in this License shall be construed as excluding or limiting any implied
   license or other defenses to infringement that may otherwise be available to you
   under applicable patent law.

12. No Surrender of Others' Freedom.

   If conditions are imposed on you (whether by court order, agreement or otherwise)
   that contradict the conditions of this License, they do not excuse you from the
   conditions of this License. If you cannot convey a covered work so as to satisfy
   simultaneously your obligations under this License and any other pertinent
   obligations, then as a consequence you may not convey it at all. For example, if
   you agree to terms that obligate you to collect a royalty for further conveying
   from those to whom you convey the Program, the only way you could satisfy both
   those terms and this License would be to refrain entirely from conveying the
   Program.

13. Remote Network Interaction; Use with the GNU General Public License.

   Notwithstanding any other provision of this License, if you modify the Program,
   your modified version must prominently offer all users interacting with it
   remotely through a computer network (if your version supports such interaction)
   an opportunity to receive the Corresponding Source of your version by providing
   access to the Corresponding Source from a network server at no charge, through
   some standard or customary means of facilitating copying of software. This
   Corresponding Source shall include the Corresponding Source for any work covered
   by version 3 of the GNU General Public License that is incorporated pursuant to
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   Notwithstanding any other provision of this License, you have permission to link
   or combine any covered work with a work licensed under version 3 of the GNU
   General Public License into a single combined work, and to convey the resulting
   work. The terms of this License will continue to apply to the part which is the
   covered work, but the work with which it is combined will remain governed by
   version 3 of the GNU General Public License.

14. Revised Versions of this License.

   The Free Software Foundation may publish revised and/or new versions of the GNU
   Affero General Public License from time to time. Such new versions will be
   similar in spirit to the present version, but may differ in detail to address new
   problems or concerns.

   Each version is given a distinguishing version number. If the Program specifies
   that a certain numbered version of the GNU Affero General Public License "or any
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   If the Program specifies that a proxy can decide which future versions of the GNU
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   Later license versions may give you additional or different permissions. However,
   no additional obligations are imposed on any author or copyright holder as a
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15. Disclaimer of Warranty.

   THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
   EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER
   PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
   EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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   QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
   DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.

16. Limitation of Liability.

   IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY
   COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM AS
   PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL,
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   THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED
   INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE
   PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY
   HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

17. Interpretation of Sections 15 and 16.

   If the disclaimer of warranty and limitation of liability provided above cannot
   be given local legal effect according to their terms, reviewing courts shall
   apply local law that most closely approximates an absolute waiver of all civil
   liability in connection with the Program, unless a warranty or assumption of
   liability accompanies a copy of the Program in return for a fee.

   END OF TERMS AND CONDITIONS

How to Apply These Terms to Your New Programs

   If you develop a new program, and you want it to be of the greatest possible use
   to the public, the best way to achieve this is to make it free software which
   everyone can redistribute and change under these terms.

   To do so, attach the following notices to the program. It is safest to attach
   them to the start of each source file to most effectively state the exclusion of
   warranty; and each file should have at least the "copyright" line and a pointer
   to where the full notice is found.