1169695Skan GNU GENERAL PUBLIC LICENSE 2169695Skan Version 2, June 1991 3169695Skan 4169695Skan Copyright (C) 1989, 1991 Free Software Foundation, Inc. 5169695Skan 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 6169695Skan Everyone is permitted to copy and distribute verbatim copies 7169695Skan of this license document, but changing it is not allowed. 8169695Skan 9169695Skan Preamble 10169695Skan 11169695Skan The licenses for most software are designed to take away your 12169695Skanfreedom to share and change it. By contrast, the GNU General Public 13169695SkanLicense is intended to guarantee your freedom to share and change free 14169695Skansoftware--to make sure the software is free for all its users. This 15169695SkanGeneral Public License applies to most of the Free Software 16169695SkanFoundation's software and to any other program whose authors commit to 17169695Skanusing it. (Some other Free Software Foundation software is covered by 18169695Skanthe GNU Library General Public License instead.) You can apply it to 19169695Skanyour programs, too. 20169695Skan 21169695Skan When we speak of free software, we are referring to freedom, not 22169695Skanprice. Our General Public Licenses are designed to make sure that you 23169695Skanhave the freedom to distribute copies of free software (and charge for 24169695Skanthis service if you wish), that you receive source code or can get it 25169695Skanif you want it, that you can change the software or use pieces of it 26169695Skanin new free programs; and that you know you can do these things. 27169695Skan 28169695Skan To protect your rights, we need to make restrictions that forbid 29169695Skananyone to deny you these rights or to ask you to surrender the rights. 30169695SkanThese restrictions translate to certain responsibilities for you if you 31169695Skandistribute copies of the software, or if you modify it. 32169695Skan 33169695Skan For example, if you distribute copies of such a program, whether 34169695Skangratis or for a fee, you must give the recipients all the rights that 35169695Skanyou have. You must make sure that they, too, receive or can get the 36169695Skansource code. 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The "Program", below, 65169695Skanrefers to any such program or work, and a "work based on the Program" 66169695Skanmeans either the Program or any derivative work under copyright law: 67169695Skanthat is to say, a work containing the Program or a portion of it, 68169695Skaneither verbatim or with modifications and/or translated into another 69169695Skanlanguage. (Hereinafter, translation is included without limitation in 70169695Skanthe term "modification".) Each licensee is addressed as "you". 71169695Skan 72169695SkanActivities other than copying, distribution and modification are not 73169695Skancovered by this License; they are outside its scope. 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You may copy and distribute verbatim copies of the Program's 80169695Skansource code as you receive it, in any medium, provided that you 81169695Skanconspicuously and appropriately publish on each copy an appropriate 82169695Skancopyright notice and disclaimer of warranty; keep intact all the 83169695Skannotices that refer to this License and to the absence of any warranty; 84169695Skanand give any other recipients of the Program a copy of this License 85169695Skanalong with the Program. 86169695Skan 87169695SkanYou may charge a fee for the physical act of transferring a copy, and 88169695Skanyou may at your option offer warranty protection in exchange for a fee. 89169695Skan 90169695Skan 2. 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You may copy and distribute the Program (or a work based on it, 135169695Skanunder Section 2) in object code or executable form under the terms of 136169695SkanSections 1 and 2 above provided that you also do one of the following: 137169695Skan 138169695Skan a) Accompany it with the complete corresponding machine-readable 139169695Skan source code, which must be distributed under the terms of Sections 140169695Skan 1 and 2 above on a medium customarily used for software interchange; or, 141169695Skan 142169695Skan b) Accompany it with a written offer, valid for at least three 143169695Skan years, to give any third party, for a charge no more than your 144169695Skan cost of physically performing source distribution, a complete 145169695Skan machine-readable copy of the corresponding source code, to be 146169695Skan distributed under the terms of Sections 1 and 2 above on a medium 147169695Skan customarily used for software interchange; or, 148169695Skan 149169695Skan c) Accompany it with the information you received as to the offer 150169695Skan to distribute corresponding source code. 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For example, if a patent 205169695Skanlicense would not permit royalty-free redistribution of the Program by 206169695Skanall those who receive copies directly or indirectly through you, then 207169695Skanthe only way you could satisfy both it and this License would be to 208169695Skanrefrain entirely from distribution of the Program. 209169695Skan 210169695SkanIf any portion of this section is held invalid or unenforceable under 211169695Skanany particular circumstance, the balance of the section is intended to 212169695Skanapply and the section as a whole is intended to apply in other 213169695Skancircumstances. 214169695Skan 215169695SkanIt is not the purpose of this section to induce you to infringe any 216169695Skanpatents or other property right claims or to contest validity of any 217169695Skansuch claims; this section has the sole purpose of protecting the 218169695Skanintegrity of the free software distribution system, which is 219169695Skanimplemented by public license practices. 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In such case, this License incorporates 235169695Skanthe limitation as if written in the body of this License. 236169695Skan 237169695Skan 9. The Free Software Foundation may publish revised and/or new versions 238169695Skanof the General Public License from time to time. Such new versions will 239169695Skanbe similar in spirit to the present version, but may differ in detail to 240169695Skanaddress new problems or concerns. 241169695Skan 242169695SkanEach version is given a distinguishing version number. If the Program 243169695Skanspecifies a version number of this License which applies to it and "any 244169695Skanlater version", you have the option of following the terms and conditions 245169695Skaneither of that version or of any later version published by the Free 246169695SkanSoftware Foundation. If the Program does not specify a version number of 247169695Skanthis License, you may choose any version ever published by the Free Software 248169695SkanFoundation. 249169695Skan 250169695Skan 10. If you wish to incorporate parts of the Program into other free 251169695Skanprograms whose distribution conditions are different, write to the author 252169695Skanto ask for permission. For software which is copyrighted by the Free 253169695SkanSoftware Foundation, write to the Free Software Foundation; we sometimes 254169695Skanmake exceptions for this. Our decision will be guided by the two goals 255169695Skanof preserving the free status of all derivatives of our free software and 256169695Skanof promoting the sharing and reuse of software generally. 257169695Skan 258169695Skan NO WARRANTY 259169695Skan 260169695Skan 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY 261169695SkanFOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN 262169695SkanOTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES 263169695SkanPROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED 264169695SkanOR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 265169695SkanMERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS 266169695SkanTO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE 267169695SkanPROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, 268169695SkanREPAIR OR CORRECTION. 269169695Skan 270169695Skan 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 271169695SkanWILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR 272169695SkanREDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, 273169695SkanINCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING 274169695SkanOUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED 275169695SkanTO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY 276169695SkanYOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER 277169695SkanPROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE 278169695SkanPOSSIBILITY OF SUCH DAMAGES. 279169695Skan 280169695Skan END OF TERMS AND CONDITIONS 281169695Skan 282169695Skan How to Apply These Terms to Your New Programs 283169695Skan 284169695Skan If you develop a new program, and you want it to be of the greatest 285169695Skanpossible use to the public, the best way to achieve this is to make it 286169695Skanfree software which everyone can redistribute and change under these terms. 287169695Skan 288169695Skan To do so, attach the following notices to the program. It is safest 289169695Skanto attach them to the start of each source file to most effectively 290169695Skanconvey the exclusion of warranty; and each file should have at least 291169695Skanthe "copyright" line and a pointer to where the full notice is found. 292169695Skan 293169695Skan <one line to give the program's name and a brief idea of what it does.> 294169695Skan Copyright (C) <year> <name of author> 295169695Skan 296169695Skan This program is free software; you can redistribute it and/or modify 297169695Skan it under the terms of the GNU General Public License as published by 298169695Skan the Free Software Foundation; either version 2 of the License, or 299169695Skan (at your option) any later version. 300169695Skan 301169695Skan This program is distributed in the hope that it will be useful, 302169695Skan but WITHOUT ANY WARRANTY; without even the implied warranty of 303169695Skan MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 304169695Skan GNU General Public License for more details. 305169695Skan 306169695Skan You should have received a copy of the GNU General Public License 307169695Skan along with this program; if not, write to the Free Software 308169695Skan Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 309169695Skan 310169695Skan 311169695SkanAlso add information on how to contact you by electronic and paper mail. 312169695Skan 313169695SkanIf the program is interactive, make it output a short notice like this 314169695Skanwhen it starts in an interactive mode: 315169695Skan 316169695Skan Gnomovision version 69, Copyright (C) year name of author 317169695Skan Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 318169695Skan This is free software, and you are welcome to redistribute it 319169695Skan under certain conditions; type `show c' for details. 320169695Skan 321169695SkanThe hypothetical commands `show w' and `show c' should show the appropriate 322169695Skanparts of the General Public License. Of course, the commands you use may 323169695Skanbe called something other than `show w' and `show c'; they could even be 324169695Skanmouse-clicks or menu items--whatever suits your program. 325169695Skan 326169695SkanYou should also get your employer (if you work as a programmer) or your 327169695Skanschool, if any, to sign a "copyright disclaimer" for the program, if 328169695Skannecessary. Here is a sample; alter the names: 329169695Skan 330169695Skan Yoyodyne, Inc., hereby disclaims all copyright interest in the program 331169695Skan `Gnomovision' (which makes passes at compilers) written by James Hacker. 332169695Skan 333169695Skan <signature of Ty Coon>, 1 April 1989 334169695Skan Ty Coon, President of Vice 335169695Skan 336169695SkanThis General Public License does not permit incorporating your program into 337169695Skanproprietary programs. If your program is a subroutine library, you may 338169695Skanconsider it more useful to permit linking proprietary applications with the 339169695Skanlibrary. If this is what you want to do, use the GNU Library General 340169695SkanPublic License instead of this License. 341