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GNU GENERAL PUBLIC LICENSE
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              Version 2, June 1991
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Copyright (C) 1989, 1991 Free Software Foundation, Inc. 675 Mass Ave,
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Cambridge, MA 02139, USA. Everyone is permitted to copy and distribute
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verbatim copies of this license document, but changing it is not allowed.
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                  Preamble
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The licenses for most software are designed to take away your freedom to
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share and change it. By contrast, the GNU General Public License is
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intended to guarantee your freedom to share and change free software--to
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make sure the software is free for all its users. This General Public License
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applies to most of the Free Software Foundation's software and to any other
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program whose authors commit to using it. (Some other Free Software
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Foundation software is covered by the GNU Library General Public License
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instead.) You can apply it to your programs, too.
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When we speak of free software, we are referring to freedom, not price. Our
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General Public Licenses are designed to make sure that you have the
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freedom to distribute copies of free software (and charge for this service if
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you wish), that you receive source code or can get it if you want it, that you
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can change the software or use pieces of it in new free programs; and that
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you know you can do these things.
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To protect your rights, we need to make restrictions that forbid anyone to
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deny you these rights or to ask you to surrender the rights. These restrictions
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translate to certain responsibilities for you if you distribute copies of the
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software, or if you modify it.
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For example, if you distribute copies of such a program, whether gratis or for
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a fee, you must give the recipients all the rights that you have. You must make
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sure that they, too, receive or can get the source code. And you must show
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them these terms so they know their rights.
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We protect your rights with two steps: (1) copyright the software, and (2)
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offer you this license which gives you legal permission to copy, distribute
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and/or modify the software.
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Also, for each author's protection and ours, we want to make certain that
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everyone understands that there is no warranty for this free software. If the
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software is modified by someone else and passed on, we want its recipients
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to know that what they have is not the original, so that any problems
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introduced by others will not reflect on the original authors' reputations.
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Finally, any free program is threatened constantly by software patents. We
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wish to avoid the danger that redistributors of a free program will individually
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obtain patent licenses, in effect making the program proprietary. To prevent
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this, we have made it clear that any patent must be licensed for everyone's
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free use or not licensed at all.
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The precise terms and conditions for copying, distribution and modification
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follow.
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           GNU GENERAL PUBLIC LICENSE
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 TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND
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               MODIFICATION
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0. This License applies to any program or other work which contains a notice
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placed by the copyright holder saying it may be distributed under the terms
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of this General Public License. The "Program", below, refers to any such
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program or work, and a "work based on the Program" means either the
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Program or any derivative work under copyright law: that is to say, a work
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containing the Program or a portion of it, either verbatim or with
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modifications and/or translated into another language. (Hereinafter, translation
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is included without limitation in the term "modification".) Each licensee is
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addressed as "you".
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Activities other than copying, distribution and modification are not covered
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by this License; they are outside its scope. The act of running the Program is
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not restricted, and the output from the Program is covered only if its contents
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constitute a work based on the Program (independent of having been made
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by running the Program). Whether that is true depends on what the Program
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does.
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1. You may copy and distribute verbatim copies of the Program's source
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code as you receive it, in any medium, provided that you conspicuously and
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appropriately publish on each copy an appropriate copyright notice and
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disclaimer of warranty; keep intact all the notices that refer to this License
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and to the absence of any warranty; and give any other recipients of the
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Program a copy of this License along with the Program.
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You may charge a fee for the physical act of transferring a copy, and you
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may at your option offer warranty protection in exchange for a fee.
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2. You may modify your copy or copies of the Program or any portion of it,
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thus forming a work based on the Program, and copy and distribute such
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modifications or work under the terms of Section 1 above, provided that you
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also meet all of these conditions:
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a) You must cause the modified files to carry prominent notices stating that
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you changed the files and the date of any change.
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b) You must cause any work that you distribute or publish, that in whole or in
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part contains or is derived from the Program or any part thereof, to be
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licensed as a whole at no charge to all third parties under the terms of this
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License.
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c) If the modified program normally reads commands interactively when run,
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you must cause it, when started running for such interactive use in the most
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ordinary way, to print or display an announcement including an appropriate
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copyright notice and a notice that there is no warranty (or else, saying that
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you provide a warranty) and that users may redistribute the program under
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these conditions, and telling the user how to view a copy of this License.
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(Exception: if the Program itself is interactive but does not normally print such
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an announcement, your work based on the Program is not required to print
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an announcement.)
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These requirements apply to the modified work as a whole. If identifiable
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sections of that work are not derived from the Program, and can be
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reasonably considered independent and separate works in themselves, then
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this License, and its terms, do not apply to those sections when you distribute
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them as separate works. But when you distribute the same sections as part
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of a whole which is a work based on the Program, the distribution of the
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whole must be on the terms of this License, whose permissions for other
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licensees extend to the entire whole, and thus to each and every part
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regardless of who wrote it.
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Thus, it is not the intent of this section to claim rights or contest your rights to
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work written entirely by you; rather, the intent is to exercise the right to
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control the distribution of derivative or collective works based on the
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Program.
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In addition, mere aggregation of another work not based on the Program
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with the Program (or with a work based on the Program) on a volume of a
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storage or distribution medium does not bring the other work under the scope
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of this License.
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3. You may copy and distribute the Program (or a work based on it, under
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Section 2) in object code or executable form under the terms of Sections 1
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and 2 above provided that you also do one of the following:
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a) Accompany it with the complete corresponding machine-readable source
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code, which must be distributed under the terms of Sections 1 and 2 above
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on a medium customarily used for software interchange; or,
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b) Accompany it with a written offer, valid for at least three years, to give
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any third party, for a charge no more than your cost of physically performing
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source distribution, a complete machine-readable copy of the corresponding
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source code, to be distributed under the terms of Sections 1 and 2 above on
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a medium customarily used for software interchange; or,
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c) Accompany it with the information you received as to the offer to distribute
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corresponding source code. (This alternative is allowed only for
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noncommercial distribution and only if you received the program in object
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code or executable form with such an offer, in accord with Subsection b
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above.)
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The source code for a work means the preferred form of the work for
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making modifications to it. For an executable work, complete source code
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means all the source code for all modules it contains, plus any associated
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interface definition files, plus the scripts used to control compilation and
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installation of the executable. However, as a special exception, the source
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code distributed need not include anything that is normally distributed (in
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either source or binary form) with the major components (compiler, kernel,
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and so on) of the operating system on which the executable runs, unless that
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component itself accompanies the executable.
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If distribution of executable or object code is made by offering access to
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copy from a designated place, then offering equivalent access to copy the
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source code from the same place counts as distribution of the source code,
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even though third parties are not compelled to copy the source along with the
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object code.
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4. You may not copy, modify, sublicense, or distribute the Program except as
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expressly provided under this License. Any attempt otherwise to copy,
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modify, sublicense or distribute the Program is void, and will automatically
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terminate your rights under this License. However, parties who have received
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copies, or rights, from you under this License will not have their licenses
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terminated so long as such parties remain in full compliance.
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5. You are not required to accept this License, since you have not signed it.
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However, nothing else grants you permission to modify or distribute the
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Program or its derivative works. These actions are prohibited by law if you
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do not accept this License. Therefore, by modifying or distributing the
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Program (or any work based on the Program), you indicate your acceptance
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of this License to do so, and all its terms and conditions for copying,
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distributing or modifying the Program or works based on it.
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6. Each time you redistribute the Program (or any work based on the
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Program), the recipient automatically receives a license from the original
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licensor to copy, distribute or modify the Program subject to these terms and
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conditions. You may not impose any further restrictions on the recipients'
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exercise of the rights granted herein. You are not responsible for enforcing
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compliance by third parties to this License.
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7. If, as a consequence of a court judgment or allegation of patent
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infringement or for any other reason (not limited to patent issues), conditions
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are imposed on you (whether by court order, agreement or otherwise) that
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contradict the conditions of this License, they do not excuse you from the
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conditions of this License. If you cannot distribute so as to satisfy
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simultaneously your obligations under this License and any other pertinent
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obligations, then as a consequence you may not distribute the Program at all.
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For example, if a patent license would not permit royalty-free redistribution
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of the Program by all those who receive copies directly or indirectly through
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you, then the only way you could satisfy both it and this License would be to
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refrain entirely from distribution of the Program.
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If any portion of this section is held invalid or unenforceable under any
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particular circumstance, the balance of the section is intended to apply and
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the section as a whole is intended to apply in other circumstances.
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It is not the purpose of this section to induce you to infringe any patents or
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other property right claims or to contest validity of any such claims; this
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section has the sole purpose of protecting the integrity of the free software
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distribution system, which is implemented by public license practices. Many
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people have made generous contributions to the wide range of software
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distributed through that system in reliance on consistent application of that
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system; it is up to the author/donor to decide if he or she is willing to
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distribute software through any other system and a licensee cannot impose
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that choice.
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This section is intended to make thoroughly clear what is believed to be a
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consequence of the rest of this License.
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8. If the distribution and/or use of the Program is restricted in certain
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countries either by patents or by copyrighted interfaces, the original copyright
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holder who places the Program under this License may add an explicit
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geographical distribution limitation excluding those countries, so that
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distribution is permitted only in or among countries not thus excluded. In such
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case, this License incorporates the limitation as if written in the body of this
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License.
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9. The Free Software Foundation may publish revised and/or new versions
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of the General Public License from time to time. Such new versions will be
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similar in spirit to the present version, but may differ in detail to address new
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problems or concerns.
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Each version is given a distinguishing version number. If the Program specifies
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a version number of this License which applies to it and "any later version",
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you have the option of following the terms and conditions either of that
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version or of any later version published by the Free Software Foundation. If
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the Program does not specify a version number of this License, you may
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choose any version ever published by the Free Software Foundation.
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10. If you wish to incorporate parts of the Program into other free programs
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whose distribution conditions are different, write to the author to ask for
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permission. For software which is copyrighted by the Free Software
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Foundation, write to the Free Software Foundation; we sometimes make
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exceptions for this. Our decision will be guided by the two goals of
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preserving the free status of all derivatives of our free software and of
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promoting the sharing and reuse of software generally.
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               NO WARRANTY
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11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE,
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THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT
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PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE
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STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
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OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT
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WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
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PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
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PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL
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NECESSARY SERVICING, REPAIR OR CORRECTION.
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12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR
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AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR
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ANY OTHER PARTY WHO MAY MODIFY AND/OR
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REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE
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LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL,
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SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
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ARISING OUT OF THE USE OR INABILITY TO USE THE
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PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA
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OR DATA BEING RENDERED INACCURATE OR LOSSES
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SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE
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PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN
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IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF
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THE POSSIBILITY OF SUCH DAMAGES.
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          END OF TERMS AND CONDITIONS