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.675 Mass Ave, Cambridge, MA 02139, USAEveryone is permitted to copy and distribute verbatim copies of this license document, but chang-ing it is not allowed.PreambleThe licenses for most software are designed to take away your freedom to share and change it.Bycontrast, the GNU General Public License is intended to guarantee your freedom to share andchange free software to make sure the software is free for all its users.This General PublicLicense applies to most of the Free Software Foundation s software and to any other programwhose authors commit to using it.(Some other Free Software Foundation software is covered bythe GNU Library General Public License instead.) You can apply it to your programs, too.When we speak of free software, we are referring to freedom, not price.Our General PublicLicenses are designed to make sure that you have the freedom to distribute copies of free software(and charge for this service if you wish), that you receive source code or can get it if you want it,that you can change the software or use pieces of it in new free programs; and that you know youcan do these things.To protect your rights, we need to make restrictions that forbid anyone to deny you these rights orto ask you to surrender the rights.These restrictions translate to certain responsibilities for you ifyou distribute copies of the software, or if you modify it.For example, if you distribute copies of such a program, whether gratis or for a fee, you must givethe recipients all the rights that you have.You must make sure that they, too, receive or can get thesource code.And you must show them these terms so they know their rights.We protect your rights with two steps: (1) copyright the software, and (2) offer you this licensewhich gives you legal permission to copy, distribute and/or modify the software.Also, for each author s protection and ours, we want to make certain that everyone understands thatthere is no warranty for this free software.If the software is modified by someone else and passedon, we want its recipients to know that what they have is not the original, so that any problemsintroduced by others will not reflect on the original authors reputations.Finally, any free program is threatened constantly by software patents.We wish to avoid the dangerthat redistributors of a free program will individually obtain patent licenses, in effect making theprogram proprietary.To prevent this, we have made it clear that any patent must be licensed foreveryone s free use or not licensed at all.The precise terms and conditions for copying, distribution and modification follow.GNU GENERAL PUBLIC LICENSETERMS AND CONDITIONS FOR COPYING, DISTRIBUTION ANDMODIFICATION0.This License applies to any program or other work which contains a notice placed by thecopyright holder saying it may be distributed under the terms of this General Public License.The  Program , below, refers to any such program or work, and a  work based on theProgram means either the Program or any derivative work under copyright law: that is tosay, a work containing the Program or a portion of it, either verbatim or with modificationsand/or translated into another language.(Hereinafter, translation is included without limita-tion in the term  modification.) Each licensee is addressed as  you. 32 526-2 LIC 8/26/99 11:03 AM Page 576Activities other than copying, distribution and modification are not covered by this License;they are outside its scope.The act of running the Program is not restricted, and the outputfrom the Program is covered only if its contents constitute a work based on the Program(independent of having been made by running the Program).Whether that is true depends onwhat the Program does.1.You may copy and distribute verbatim copies of the Program s source code as you receive it,in any medium, provided that you conspicuously and appropriately publish on each copy anappropriate copyright notice and disclaimer of warranty; keep intact all the notices that referto this License and to the absence of any warranty; and give any other recipients of theProgram a copy of this License along with the Program.You may charge a fee for the physical act of transferring a copy, and you may at your optionoffer warranty protection in exchange for a fee.2.You may modify your copy or copies of the Program or any portion of it, thus forming awork based on the Program, and copy and distribute such modifications or work under theterms of Section 1 above, provided that you also meet all of these conditions:a) You must cause the modified files to carry prominent notices stating that you changedthe files and the date of any change.b) You must cause any work that you distribute or publish, that in whole or in part con-tains or is derived from the Program or any part thereof, to be licensed as a whole atno charge to all third parties under the terms of this License [ Pobierz całość w formacie PDF ]
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