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Comment:add COPYING
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User & Date: 2013-03-10 18:42:17
rename readme Leaf check-in: 3bc7e2dab0 user: brandon tags: trunk
add COPYING check-in: b1e984c726 user: tags: trunk
fix markdown m4 mess for real check-in: f3d3387f06 user: tags: trunk


            1  +                    GNU AFFERO GENERAL PUBLIC LICENSE
            2  +                       Version 3, 19 November 2007
            3  +
            4  + Copyright (C) 2007 Free Software Foundation, Inc. <>
            5  + Everyone is permitted to copy and distribute verbatim copies
            6  + of this license document, but changing it is not allowed.
            7  +
            8  +                            Preamble
            9  +
           10  +  The GNU Affero General Public License is a free, copyleft license for
           11  +software and other kinds of works, specifically designed to ensure
           12  +cooperation with the community in the case of network server software.
           13  +
           14  +  The licenses for most software and other practical works are designed
           15  +to take away your freedom to share and change the works.  By contrast,
           16  +our General Public Licenses are intended to guarantee your freedom to
           17  +share and change all versions of a program--to make sure it remains free
           18  +software for all its users.
           19  +
           20  +  When we speak of free software, we are referring to freedom, not
           21  +price.  Our General Public Licenses are designed to make sure that you
           22  +have the freedom to distribute copies of free software (and charge for
           23  +them if you wish), that you receive source code or can get it if you
           24  +want it, that you can change the software or use pieces of it in new
           25  +free programs, and that you know you can do these things.
           26  +
           27  +  Developers that use our General Public Licenses protect your rights
           28  +with two steps: (1) assert copyright on the software, and (2) offer
           29  +you this License which gives you legal permission to copy, distribute
           30  +and/or modify the software.
           31  +
           32  +  A secondary benefit of defending all users' freedom is that
           33  +improvements made in alternate versions of the program, if they
           34  +receive widespread use, become available for other developers to
           35  +incorporate.  Many developers of free software are heartened and
           36  +encouraged by the resulting cooperation.  However, in the case of
           37  +software used on network servers, this result may fail to come about.
           38  +The GNU General Public License permits making a modified version and
           39  +letting the public access it on a server without ever releasing its
           40  +source code to the public.
           41  +
           42  +  The GNU Affero General Public License is designed specifically to
           43  +ensure that, in such cases, the modified source code becomes available
           44  +to the community.  It requires the operator of a network server to
           45  +provide the source code of the modified version running there to the
           46  +users of that server.  Therefore, public use of a modified version, on
           47  +a publicly accessible server, gives the public access to the source
           48  +code of the modified version.
           49  +
           50  +  An older license, called the Affero General Public License and
           51  +published by Affero, was designed to accomplish similar goals.  This is
           52  +a different license, not a version of the Affero GPL, but Affero has
           53  +released a new version of the Affero GPL which permits relicensing under
           54  +this license.
           55  +
           56  +  The precise terms and conditions for copying, distribution and
           57  +modification follow.
           58  +
           59  +                       TERMS AND CONDITIONS
           60  +
           61  +  0. Definitions.
           62  +
           63  +  "This License" refers to version 3 of the GNU Affero General Public License.
           64  +
           65  +  "Copyright" also means copyright-like laws that apply to other kinds of
           66  +works, such as semiconductor masks.
           67  +
           68  +  "The Program" refers to any copyrightable work licensed under this
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           71  +
           72  +  To "modify" a work means to copy from or adapt all or part of the work
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           77  +  A "covered work" means either the unmodified Program or a work based
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           80  +  To "propagate" a work means to do anything with it that, without
           81  +permission, would make you directly or secondarily liable for
           82  +infringement under applicable copyright law, except executing it on a
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           85  +public, and in some countries other activities as well.
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           87  +  To "convey" a work means any kind of propagation that enables other
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          149  +content, constitutes a covered work.  This License acknowledges your
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          159  +for you must do so exclusively on your behalf, under your direction
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          163  +  Conveying under any other circumstances is permitted solely under
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          165  +makes it unnecessary.
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          167  +  3. Protecting Users' Legal Rights From Anti-Circumvention Law.
          168  +
          169  +  No covered work shall be deemed part of an effective technological
          170  +measure under any applicable law fulfilling obligations under article
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          174  +
          175  +  When you convey a covered work, you waive any legal power to forbid
          176  +circumvention of technological measures to the extent such circumvention
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          183  +  4. Conveying Verbatim Copies.
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          185  +  You may convey verbatim copies of the Program's source code as you
          186  +receive it, in any medium, provided that you conspicuously and
          187  +appropriately publish on each copy an appropriate copyright notice;
          188  +keep intact all notices stating that this License and any
          189  +non-permissive terms added in accord with section 7 apply to the code;
          190  +keep intact all notices of the absence of any warranty; and give all
          191  +recipients a copy of this License along with the Program.
          192  +
          193  +  You may charge any price or no price for each copy that you convey,
          194  +and you may offer support or warranty protection for a fee.
          195  +
          196  +  5. Conveying Modified Source Versions.
          197  +
          198  +  You may convey a work based on the Program, or the modifications to
          199  +produce it from the Program, in the form of source code under the
          200  +terms of section 4, provided that you also meet all of these conditions:
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          202  +    a) The work must carry prominent notices stating that you modified
          203  +    it, and giving a relevant date.
          204  +
          205  +    b) The work must carry prominent notices stating that it is
          206  +    released under this License and any conditions added under section
          207  +    7.  This requirement modifies the requirement in section 4 to
          208  +    "keep intact all notices".
          209  +
          210  +    c) You must license the entire work, as a whole, under this
          211  +    License to anyone who comes into possession of a copy.  This
          212  +    License will therefore apply, along with any applicable section 7
          213  +    additional terms, to the whole of the work, and all its parts,
          214  +    regardless of how they are packaged.  This License gives no
          215  +    permission to license the work in any other way, but it does not
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          218  +    d) If the work has interactive user interfaces, each must display
          219  +    Appropriate Legal Notices; however, if the Program has interactive
          220  +    interfaces that do not display Appropriate Legal Notices, your
          221  +    work need not make them do so.
          222  +
          223  +  A compilation of a covered work with other separate and independent
          224  +works, which are not by their nature extensions of the covered work,
          225  +and which are not combined with it such as to form a larger program,
          226  +in or on a volume of a storage or distribution medium, is called an
          227  +"aggregate" if the compilation and its resulting copyright are not
          228  +used to limit the access or legal rights of the compilation's users
          229  +beyond what the individual works permit.  Inclusion of a covered work
          230  +in an aggregate does not cause this License to apply to the other
          231  +parts of the aggregate.
          232  +
          233  +  6. Conveying Non-Source Forms.
          234  +
          235  +  You may convey a covered work in object code form under the terms
          236  +of sections 4 and 5, provided that you also convey the
          237  +machine-readable Corresponding Source under the terms of this License,
          238  +in one of these ways:
          239  +
          240  +    a) Convey the object code in, or embodied in, a physical product
          241  +    (including a physical distribution medium), accompanied by the
          242  +    Corresponding Source fixed on a durable physical medium
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          245  +    b) Convey the object code in, or embodied in, a physical product
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          247  +    written offer, valid for at least three years and valid for as
          248  +    long as you offer spare parts or customer support for that product
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          250  +    copy of the Corresponding Source for all the software in the
          251  +    product that is covered by this License, on a durable physical
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          253  +    more than your reasonable cost of physically performing this
          254  +    conveying of source, or (2) access to copy the
          255  +    Corresponding Source from a network server at no charge.
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          257  +    c) Convey individual copies of the object code with a copy of the
          258  +    written offer to provide the Corresponding Source.  This
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          263  +    d) Convey the object code by offering access from a designated
          264  +    place (gratis or for a charge), and offer equivalent access to the
          265  +    Corresponding Source in the same way through the same place at no
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          268  +    copy the object code is a network server, the Corresponding Source
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          276  +    e) Convey the object code using peer-to-peer transmission, provided
          277  +    you inform other peers where the object code and Corresponding
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          281  +  A separable portion of the object code, whose source code is excluded
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          285  +  A "User Product" is either (1) a "consumer product", which means any
          286  +tangible personal property which is normally used for personal, family,
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          296  +the only significant mode of use of the product.
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          298  +  "Installation Information" for a User Product means any methods,
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          300  +and execute modified versions of a covered work in that User Product from
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          304  +modification has been made.
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          306  +  If you convey an object code work under this section in, or with, or
          307  +specifically for use in, a User Product, and the conveying occurs as
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          325  +  Corresponding Source conveyed, and Installation Information provided,
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          329  +unpacking, reading or copying.
          330  +
          331  +  7. Additional Terms.
          332  +
          333  +  "Additional permissions" are terms that supplement the terms of this
          334  +License by making exceptions from one or more of its conditions.
          335  +Additional permissions that are applicable to the entire Program shall
          336  +be treated as though they were included in this License, to the extent
          337  +that they are valid under applicable law.  If additional permissions
          338  +apply only to part of the Program, that part may be used separately
          339  +under those permissions, but the entire Program remains governed by
          340  +this License without regard to the additional permissions.
          341  +
          342  +  When you convey a copy of a covered work, you may at your option
          343  +remove any additional permissions from that copy, or from any part of
          344  +it.  (Additional permissions may be written to require their own
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          346  +additional permissions on material, added by you to a covered work,
          347  +for which you have or can give appropriate copyright permission.
          348  +
          349  +  Notwithstanding any other provision of this License, for material you
          350  +add to a covered work, you may (if authorized by the copyright holders of
          351  +that material) supplement the terms of this License with terms:
          352  +
          353  +    a) Disclaiming warranty or limiting liability differently from the
          354  +    terms of sections 15 and 16 of this License; or
          355  +
          356  +    b) Requiring preservation of specified reasonable legal notices or
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          358  +    Notices displayed by works containing it; or
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          376  +  All other non-permissive additional terms are considered "further
          377  +restrictions" within the meaning of section 10.  If the Program as you
          378  +received it, or any part of it, contains a notice stating that it is
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          392  +form of a separately written license, or stated as exceptions;
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          395  +  8. Termination.
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          397  +  You may not propagate or modify a covered work except as expressly
          398  +provided under this License.  Any attempt otherwise to propagate or
          399  +modify it is void, and will automatically terminate your rights under
          400  +this License (including any patent licenses granted under the third
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          403  +  However, if you cease all violation of this License, then your
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          415  +your receipt of the notice.
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          417  +  Termination of your rights under this section does not terminate the
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          423  +  9. Acceptance Not Required for Having Copies.
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          425  +  You are not required to accept this License in order to receive or
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          427  +occurring solely as a consequence of using peer-to-peer transmission
          428  +to receive a copy likewise does not require acceptance.  However,
          429  +nothing other than this License grants you permission to propagate or
          430  +modify any covered work.  These actions infringe copyright if you do
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          434  +  10. Automatic Licensing of Downstream Recipients.
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          436  +  Each time you convey a covered work, the recipient automatically
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          441  +  An "entity transaction" is a transaction transferring control of an
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          455  +(including a cross-claim or counterclaim in a lawsuit) alleging that
          456  +any patent claim is infringed by making, using, selling, offering for
          457  +sale, or importing the Program or any portion of it.
          458  +
          459  +  11. Patents.
          460  +
          461  +  A "contributor" is a copyright holder who authorizes use under this
          462  +License of the Program or a work on which the Program is based.  The
          463  +work thus licensed is called the contributor's "contributor version".
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          465  +  A contributor's "essential patent claims" are all patent claims
          466  +owned or controlled by the contributor, whether already acquired or
          467  +hereafter acquired, that would be infringed by some manner, permitted
          468  +by this License, of making, using, or selling its contributor version,
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          470  +consequence of further modification of the contributor version.  For
          471  +purposes of this definition, "control" includes the right to grant
          472  +patent sublicenses in a manner consistent with the requirements of
          473  +this License.
          474  +
          475  +  Each contributor grants you a non-exclusive, worldwide, royalty-free
          476  +patent license under the contributor's essential patent claims, to
          477  +make, use, sell, offer for sale, import and otherwise run, modify and
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          480  +  In the following three paragraphs, a "patent license" is any express
          481  +agreement or commitment, however denominated, not to enforce a patent
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          486  +
          487  +  If you convey a covered work, knowingly relying on a patent license,
          488  +and the Corresponding Source of the work is not available for anyone
          489  +to copy, free of charge and under the terms of this License, through a
          490  +publicly available network server or other readily accessible means,
          491  +then you must either (1) cause the Corresponding Source to be so
          492  +available, or (2) arrange to deprive yourself of the benefit of the
          493  +patent license for this particular work, or (3) arrange, in a manner
          494  +consistent with the requirements of this License, to extend the patent
          495  +license to downstream recipients.  "Knowingly relying" means you have
          496  +actual knowledge that, but for the patent license, your conveying the
          497  +covered work in a country, or your recipient's use of the covered work
          498  +in a country, would infringe one or more identifiable patents in that
          499  +country that you have reason to believe are valid.
          500  +
          501  +  If, pursuant to or in connection with a single transaction or
          502  +arrangement, you convey, or propagate by procuring conveyance of, a
          503  +covered work, and grant a patent license to some of the parties
          504  +receiving the covered work authorizing them to use, propagate, modify
          505  +or convey a specific copy of the covered work, then the patent license
          506  +you grant is automatically extended to all recipients of the covered
          507  +work and works based on it.
          508  +
          509  +  A patent license is "discriminatory" if it does not include within
          510  +the scope of its coverage, prohibits the exercise of, or is
          511  +conditioned on the non-exercise of one or more of the rights that are
          512  +specifically granted under this License.  You may not convey a covered
          513  +work if you are a party to an arrangement with a third party that is
          514  +in the business of distributing software, under which you make payment
          515  +to the third party based on the extent of your activity of conveying
          516  +the work, and under which the third party grants, to any of the
          517  +parties who would receive the covered work from you, a discriminatory
          518  +patent license (a) in connection with copies of the covered work
          519  +conveyed by you (or copies made from those copies), or (b) primarily
          520  +for and in connection with specific products or compilations that
          521  +contain the covered work, unless you entered into that arrangement,
          522  +or that patent license was granted, prior to 28 March 2007.
          523  +
          524  +  Nothing in this License shall be construed as excluding or limiting
          525  +any implied license or other defenses to infringement that may
          526  +otherwise be available to you under applicable patent law.
          527  +
          528  +  12. No Surrender of Others' Freedom.
          529  +
          530  +  If conditions are imposed on you (whether by court order, agreement or
          531  +otherwise) that contradict the conditions of this License, they do not
          532  +excuse you from the conditions of this License.  If you cannot convey a
          533  +covered work so as to satisfy simultaneously your obligations under this
          534  +License and any other pertinent obligations, then as a consequence you may
          535  +not convey it at all.  For example, if you agree to terms that obligate you
          536  +to collect a royalty for further conveying from those to whom you convey
          537  +the Program, the only way you could satisfy both those terms and this
          538  +License would be to refrain entirely from conveying the Program.
          539  +
          540  +  13. Remote Network Interaction; Use with the GNU General Public License.
          541  +
          542  +  Notwithstanding any other provision of this License, if you modify the
          543  +Program, your modified version must prominently offer all users
          544  +interacting with it remotely through a computer network (if your version
          545  +supports such interaction) an opportunity to receive the Corresponding
          546  +Source of your version by providing access to the Corresponding Source
          547  +from a network server at no charge, through some standard or customary
          548  +means of facilitating copying of software.  This Corresponding Source
          549  +shall include the Corresponding Source for any work covered by version 3
          550  +of the GNU General Public License that is incorporated pursuant to the
          551  +following paragraph.
          552  +
          553  +  Notwithstanding any other provision of this License, you have
          554  +permission to link or combine any covered work with a work licensed
          555  +under version 3 of the GNU General Public License into a single
          556  +combined work, and to convey the resulting work.  The terms of this
          557  +License will continue to apply to the part which is the covered work,
          558  +but the work with which it is combined will remain governed by version
          559  +3 of the GNU General Public License.
          560  +
          561  +  14. Revised Versions of this License.
          562  +
          563  +  The Free Software Foundation may publish revised and/or new versions of
          564  +the GNU Affero General Public License from time to time.  Such new versions
          565  +will be similar in spirit to the present version, but may differ in detail to
          566  +address new problems or concerns.
          567  +
          568  +  Each version is given a distinguishing version number.  If the
          569  +Program specifies that a certain numbered version of the GNU Affero General
          570  +Public License "or any later version" applies to it, you have the
          571  +option of following the terms and conditions either of that numbered
          572  +version or of any later version published by the Free Software
          573  +Foundation.  If the Program does not specify a version number of the
          574  +GNU Affero General Public License, you may choose any version ever published
          575  +by the Free Software Foundation.
          576  +
          577  +  If the Program specifies that a proxy can decide which future
          578  +versions of the GNU Affero General Public License can be used, that proxy's
          579  +public statement of acceptance of a version permanently authorizes you
          580  +to choose that version for the Program.
          581  +
          582  +  Later license versions may give you additional or different
          583  +permissions.  However, no additional obligations are imposed on any
          584  +author or copyright holder as a result of your choosing to follow a
          585  +later version.
          586  +
          587  +  15. Disclaimer of Warranty.
          588  +
          597  +
          598  +  16. Limitation of Liability.
          599  +
          608  +SUCH DAMAGES.
          609  +
          610  +  17. Interpretation of Sections 15 and 16.
          611  +
          612  +  If the disclaimer of warranty and limitation of liability provided
          613  +above cannot be given local legal effect according to their terms,
          614  +reviewing courts shall apply local law that most closely approximates
          615  +an absolute waiver of all civil liability in connection with the
          616  +Program, unless a warranty or assumption of liability accompanies a
          617  +copy of the Program in return for a fee.
          618  +
          619  +                     END OF TERMS AND CONDITIONS
          620  +
          621  +            How to Apply These Terms to Your New Programs
          622  +
          623  +  If you develop a new program, and you want it to be of the greatest
          624  +possible use to the public, the best way to achieve this is to make it
          625  +free software which everyone can redistribute and change under these terms.
          626  +
          627  +  To do so, attach the following notices to the program.  It is safest
          628  +to attach them to the start of each source file to most effectively
          629  +state the exclusion of warranty; and each file should have at least
          630  +the "copyright" line and a pointer to where the full notice is found.
          631  +
          632  +    <one line to give the program's name and a brief idea of what it does.>
          633  +    Copyright (C) <year>  <name of author>
          634  +
          635  +    This program is free software: you can redistribute it and/or modify
          636  +    it under the terms of the GNU Affero General Public License as published by
          637  +    the Free Software Foundation, either version 3 of the License, or
          638  +    (at your option) any later version.
          639  +
          640  +    This program is distributed in the hope that it will be useful,
          641  +    but WITHOUT ANY WARRANTY; without even the implied warranty of
          643  +    GNU Affero General Public License for more details.
          644  +
          645  +    You should have received a copy of the GNU Affero General Public License
          646  +    along with this program.  If not, see <>.
          647  +
          648  +Also add information on how to contact you by electronic and paper mail.
          649  +
          650  +  If your software can interact with users remotely through a computer
          651  +network, you should also make sure that it provides a way for users to
          652  +get its source.  For example, if your program is a web application, its
          653  +interface could display a "Source" link that leads users to an archive
          654  +of the code.  There are many ways you could offer source, and different
          655  +solutions will be better for different programs; see section 13 for the
          656  +specific requirements.
          657  +
          658  +  You should also get your employer (if you work as a programmer) or school,
          659  +if any, to sign a "copyright disclaimer" for the program, if necessary.
          660  +For more information on this, and how to apply and follow the GNU AGPL, see
          661  +<>.