167064Sobrien GNU GENERAL PUBLIC LICENSE 267064Sobrien Version 2, June 1991 318214Speter 467064Sobrien Copyright (C) 1989, 1991 Free Software Foundation, Inc. 5228060Sbapt 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 667064Sobrien USA. 718214Speter Everyone is permitted to copy and distribute verbatim copies 818214Speter of this license document, but changing it is not allowed. 918214Speter 1067064Sobrien Preamble 1118214Speter 1267064Sobrien The licenses for most software are designed to take away your 1367064Sobrienfreedom to share and change it. By contrast, the GNU General Public 1418214SpeterLicense is intended to guarantee your freedom to share and change free 1567064Sobriensoftware--to make sure the software is free for all its users. This 1667064SobrienGeneral Public License applies to most of the Free Software 1767064SobrienFoundation's software and to any other program whose authors commit to 1867064Sobrienusing it. (Some other Free Software Foundation software is covered by 1967064Sobrienthe GNU Library General Public License instead.) You can apply it to 2067064Sobrienyour programs, too. 2118214Speter 2218214Speter When we speak of free software, we are referring to freedom, not 2367064Sobrienprice. Our General Public Licenses are designed to make sure that you 2467064Sobrienhave the freedom to distribute copies of free software (and charge for 2567064Sobrienthis service if you wish), that you receive source code or can get it 2667064Sobrienif you want it, that you can change the software or use pieces of it 2767064Sobrienin new free programs; and that you know you can do these things. 2818214Speter 2918214Speter To protect your rights, we need to make restrictions that forbid 3018214Speteranyone to deny you these rights or to ask you to surrender the rights. 3118214SpeterThese restrictions translate to certain responsibilities for you if you 3218214Speterdistribute copies of the software, or if you modify it. 3318214Speter 3467064Sobrien For example, if you distribute copies of such a program, whether 3518214Spetergratis or for a fee, you must give the recipients all the rights that 3618214Speteryou have. You must make sure that they, too, receive or can get the 3767064Sobriensource code. And you must show them these terms so they know their 3867064Sobrienrights. 3918214Speter 4018214Speter We protect your rights with two steps: (1) copyright the software, and 4118214Speter(2) offer you this license which gives you legal permission to copy, 4218214Speterdistribute and/or modify the software. 4318214Speter 4418214Speter Also, for each author's protection and ours, we want to make certain 4518214Speterthat everyone understands that there is no warranty for this free 4618214Spetersoftware. If the software is modified by someone else and passed on, we 4718214Speterwant its recipients to know that what they have is not the original, so 4818214Speterthat any problems introduced by others will not reflect on the original 4918214Speterauthors' reputations. 5018214Speter 5167064Sobrien Finally, any free program is threatened constantly by software 5267064Sobrienpatents. We wish to avoid the danger that redistributors of a free 5367064Sobrienprogram will individually obtain patent licenses, in effect making the 5467064Sobrienprogram proprietary. To prevent this, we have made it clear that any 5567064Sobrienpatent must be licensed for everyone's free use or not licensed at all. 5667064Sobrien 5718214Speter The precise terms and conditions for copying, distribution and 5818214Spetermodification follow. 5918214Speter 6067064Sobrien GNU GENERAL PUBLIC LICENSE 6118214Speter TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 6218214Speter 6367064Sobrien 0. This License applies to any program or other work which contains 6467064Sobriena notice placed by the copyright holder saying it may be distributed 6567064Sobrienunder the terms of this General Public License. The "Program", below, 6667064Sobrienrefers to any such program or work, and a "work based on the Program" 6767064Sobrienmeans either the Program or any derivative work under copyright law: 6867064Sobrienthat is to say, a work containing the Program or a portion of it, 6967064Sobrieneither verbatim or with modifications and/or translated into another 7067064Sobrienlanguage. (Hereinafter, translation is included without limitation in 7167064Sobrienthe term "modification".) Each licensee is addressed as "you". 7218214Speter 7367064SobrienActivities other than copying, distribution and modification are not 7467064Sobriencovered by this License; they are outside its scope. The act of 7567064Sobrienrunning the Program is not restricted, and the output from the Program 7667064Sobrienis covered only if its contents constitute a work based on the 7767064SobrienProgram (independent of having been made by running the Program). 7867064SobrienWhether that is true depends on what the Program does. 7918214Speter 8067064Sobrien 1. You may copy and distribute verbatim copies of the Program's 8167064Sobriensource code as you receive it, in any medium, provided that you 8267064Sobrienconspicuously and appropriately publish on each copy an appropriate 8367064Sobriencopyright notice and disclaimer of warranty; keep intact all the 8467064Sobriennotices that refer to this License and to the absence of any warranty; 8567064Sobrienand give any other recipients of the Program a copy of this License 8667064Sobrienalong with the Program. 8718214Speter 8867064SobrienYou may charge a fee for the physical act of transferring a copy, and 8967064Sobrienyou may at your option offer warranty protection in exchange for a fee. 9018214Speter 9167064Sobrien 2. You may modify your copy or copies of the Program or any portion 9267064Sobrienof it, thus forming a work based on the Program, and copy and 9367064Sobriendistribute such modifications or work under the terms of Section 1 9467064Sobrienabove, provided that you also meet all of these conditions: 9518214Speter 9667064Sobrien a) You must cause the modified files to carry prominent notices 9767064Sobrien stating that you changed the files and the date of any change. 9818214Speter 9967064Sobrien b) You must cause any work that you distribute or publish, that in 10067064Sobrien whole or in part contains or is derived from the Program or any 10167064Sobrien part thereof, to be licensed as a whole at no charge to all third 10267064Sobrien parties under the terms of this License. 10318214Speter 10467064Sobrien c) If the modified program normally reads commands interactively 10567064Sobrien when run, you must cause it, when started running for such 10667064Sobrien interactive use in the most ordinary way, to print or display an 10767064Sobrien announcement including an appropriate copyright notice and a 10867064Sobrien notice that there is no warranty (or else, saying that you provide 10967064Sobrien a warranty) and that users may redistribute the program under 11067064Sobrien these conditions, and telling the user how to view a copy of this 11167064Sobrien License. (Exception: if the Program itself is interactive but 11267064Sobrien does not normally print such an announcement, your work based on 11367064Sobrien the Program is not required to print an announcement.) 11418214Speter 11567064SobrienThese requirements apply to the modified work as a whole. If 11667064Sobrienidentifiable sections of that work are not derived from the Program, 11767064Sobrienand can be reasonably considered independent and separate works in 11867064Sobrienthemselves, then this License, and its terms, do not apply to those 11967064Sobriensections when you distribute them as separate works. But when you 12067064Sobriendistribute the same sections as part of a whole which is a work based 12167064Sobrienon the Program, the distribution of the whole must be on the terms of 12267064Sobrienthis License, whose permissions for other licensees extend to the 12367064Sobrienentire whole, and thus to each and every part regardless of who wrote it. 12418214Speter 12567064SobrienThus, it is not the intent of this section to claim rights or contest 12667064Sobrienyour rights to work written entirely by you; rather, the intent is to 12767064Sobrienexercise the right to control the distribution of derivative or 12867064Sobriencollective works based on the Program. 12918214Speter 13067064SobrienIn addition, mere aggregation of another work not based on the Program 13167064Sobrienwith the Program (or with a work based on the Program) on a volume of 13267064Sobriena storage or distribution medium does not bring the other work under 13367064Sobrienthe scope of this License. 13418214Speter 13567064Sobrien 3. You may copy and distribute the Program (or a work based on it, 13667064Sobrienunder Section 2) in object code or executable form under the terms of 13767064SobrienSections 1 and 2 above provided that you also do one of the following: 13867064Sobrien 13967064Sobrien a) Accompany it with the complete corresponding machine-readable 14067064Sobrien source code, which must be distributed under the terms of Sections 14167064Sobrien 1 and 2 above on a medium customarily used for software interchange; or, 14267064Sobrien 14367064Sobrien b) Accompany it with a written offer, valid for at least three 14467064Sobrien years, to give any third party, for a charge no more than your 14567064Sobrien cost of physically performing source distribution, a complete 14667064Sobrien machine-readable copy of the corresponding source code, to be 14767064Sobrien distributed under the terms of Sections 1 and 2 above on a medium 14867064Sobrien customarily used for software interchange; or, 14967064Sobrien 15067064Sobrien c) Accompany it with the information you received as to the offer 15167064Sobrien to distribute corresponding source code. (This alternative is 15218214Speter allowed only for noncommercial distribution and only if you 15367064Sobrien received the program in object code or executable form with such 15467064Sobrien an offer, in accord with Subsection b above.) 15518214Speter 15667064SobrienThe source code for a work means the preferred form of the work for 15767064Sobrienmaking modifications to it. For an executable work, complete source 15867064Sobriencode means all the source code for all modules it contains, plus any 15967064Sobrienassociated interface definition files, plus the scripts used to 16067064Sobriencontrol compilation and installation of the executable. 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Any attempt 17567064Sobrienotherwise to copy, modify, sublicense or distribute the Program is 17667064Sobrienvoid, and will automatically terminate your rights under this License. 17767064SobrienHowever, parties who have received copies, or rights, from you under 17867064Sobrienthis License will not have their licenses terminated so long as such 17967064Sobrienparties remain in full compliance. 18018214Speter 18167064Sobrien 5. You are not required to accept this License, since you have not 18267064Sobriensigned it. However, nothing else grants you permission to modify or 18367064Sobriendistribute the Program or its derivative works. These actions are 18467064Sobrienprohibited by law if you do not accept this License. Therefore, by 18567064Sobrienmodifying or distributing the Program (or any work based on the 18667064SobrienProgram), you indicate your acceptance of this License to do so, and 18767064Sobrienall its terms and conditions for copying, distributing or modifying 18867064Sobrienthe Program or works based on it. 18918214Speter 19018214Speter 6. Each time you redistribute the Program (or any work based on the 19167064SobrienProgram), the recipient automatically receives a license from the 19267064Sobrienoriginal licensor to copy, distribute or modify the Program subject to 19367064Sobrienthese terms and conditions. You may not impose any further 19467064Sobrienrestrictions on the recipients' exercise of the rights granted herein. 19567064SobrienYou are not responsible for enforcing compliance by third parties to 19667064Sobrienthis License. 19767064Sobrien 19867064Sobrien 7. If, as a consequence of a court judgment or allegation of patent 19967064Sobrieninfringement or for any other reason (not limited to patent issues), 20067064Sobrienconditions are imposed on you (whether by court order, agreement or 20167064Sobrienotherwise) that contradict the conditions of this License, they do not 20267064Sobrienexcuse you from the conditions of this License. If you cannot 20367064Sobriendistribute so as to satisfy simultaneously your obligations under this 20467064SobrienLicense and any other pertinent obligations, then as a consequence you 20567064Sobrienmay not distribute the Program at all. For example, if a patent 20667064Sobrienlicense would not permit royalty-free redistribution of the Program by 20767064Sobrienall those who receive copies directly or indirectly through you, then 20867064Sobrienthe only way you could satisfy both it and this License would be to 20967064Sobrienrefrain entirely from distribution of the Program. 21067064Sobrien 21167064SobrienIf any portion of this section is held invalid or unenforceable under 21267064Sobrienany particular circumstance, the balance of the section is intended to 21367064Sobrienapply and the section as a whole is intended to apply in other 21467064Sobriencircumstances. 21567064Sobrien 21667064SobrienIt is not the purpose of this section to induce you to infringe any 21767064Sobrienpatents or other property right claims or to contest validity of any 21867064Sobriensuch claims; this section has the sole purpose of protecting the 21967064Sobrienintegrity of the free software distribution system, which is 22067064Sobrienimplemented by public license practices. Many people have made 22167064Sobriengenerous contributions to the wide range of software distributed 22267064Sobrienthrough that system in reliance on consistent application of that 22367064Sobriensystem; it is up to the author/donor to decide if he or she is willing 22467064Sobriento distribute software through any other system and a licensee cannot 22567064Sobrienimpose that choice. 22667064Sobrien 22767064SobrienThis section is intended to make thoroughly clear what is believed to 22867064Sobrienbe a consequence of the rest of this License. 22918214Speter 23067064Sobrien 8. If the distribution and/or use of the Program is restricted in 23167064Sobriencertain countries either by patents or by copyrighted interfaces, the 23267064Sobrienoriginal copyright holder who places the Program under this License 23367064Sobrienmay add an explicit geographical distribution limitation excluding 23467064Sobrienthose countries, so that distribution is permitted only in or among 23567064Sobriencountries not thus excluded. In such case, this License incorporates 23667064Sobrienthe limitation as if written in the body of this License. 23767064Sobrien 23867064Sobrien 9. The Free Software Foundation may publish revised and/or new versions 23918214Speterof the General Public License from time to time. Such new versions will 24018214Speterbe similar in spirit to the present version, but may differ in detail to 24118214Speteraddress new problems or concerns. 24218214Speter 24318214SpeterEach version is given a distinguishing version number. If the Program 24467064Sobrienspecifies a version number of this License which applies to it and "any 24518214Speterlater version", you have the option of following the terms and conditions 24618214Spetereither of that version or of any later version published by the Free 24718214SpeterSoftware Foundation. If the Program does not specify a version number of 24867064Sobrienthis License, you may choose any version ever published by the Free Software 24918214SpeterFoundation. 25018214Speter 25167064Sobrien 10. If you wish to incorporate parts of the Program into other free 25218214Speterprograms whose distribution conditions are different, write to the author 25318214Speterto ask for permission. For software which is copyrighted by the Free 25418214SpeterSoftware Foundation, write to the Free Software Foundation; we sometimes 25518214Spetermake exceptions for this. Our decision will be guided by the two goals 25618214Speterof preserving the free status of all derivatives of our free software and 25718214Speterof promoting the sharing and reuse of software generally. 25818214Speter 25967064Sobrien NO WARRANTY 26018214Speter 26167064Sobrien 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY 26218214SpeterFOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN 26318214SpeterOTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES 26418214SpeterPROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED 26518214SpeterOR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 26618214SpeterMERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS 26718214SpeterTO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE 26818214SpeterPROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, 26918214SpeterREPAIR OR CORRECTION. 27018214Speter 27167064Sobrien 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 27218214SpeterWILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR 27318214SpeterREDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, 27418214SpeterINCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING 27518214SpeterOUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED 27618214SpeterTO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY 27718214SpeterYOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER 27818214SpeterPROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE 27918214SpeterPOSSIBILITY OF SUCH DAMAGES. 28018214Speter 28167064Sobrien END OF TERMS AND CONDITIONS 28218214Speter 28367064Sobrien Appendix: How to Apply These Terms to Your New Programs 28418214Speter 28518214Speter If you develop a new program, and you want it to be of the greatest 28667064Sobrienpossible use to the public, the best way to achieve this is to make it 28767064Sobrienfree software which everyone can redistribute and change under these terms. 28818214Speter 28967064Sobrien To do so, attach the following notices to the program. It is safest 29067064Sobriento attach them to the start of each source file to most effectively 29167064Sobrienconvey the exclusion of warranty; and each file should have at least 29267064Sobrienthe "copyright" line and a pointer to where the full notice is found. 29318214Speter 29418214Speter <one line to give the program's name and a brief idea of what it does.> 29567064Sobrien Copyright (C) <year> <name of author> 29618214Speter 29718214Speter This program is free software; you can redistribute it and/or modify 29818214Speter it under the terms of the GNU General Public License as published by 29967064Sobrien the Free Software Foundation; either version 2 of the License, or 30067064Sobrien (at your option) any later version. 30118214Speter 30218214Speter This program is distributed in the hope that it will be useful, 30318214Speter but WITHOUT ANY WARRANTY; without even the implied warranty of 30418214Speter MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 30518214Speter GNU General Public License for more details. 30618214Speter 30718214Speter You should have received a copy of the GNU General Public License 30818214Speter along with this program; if not, write to the Free Software 30967064Sobrien Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. 31018214Speter 31118214SpeterAlso add information on how to contact you by electronic and paper mail. 31218214Speter 31318214SpeterIf the program is interactive, make it output a short notice like this 31418214Speterwhen it starts in an interactive mode: 31518214Speter 31667064Sobrien Gnomovision version 69, Copyright (C) year name of author 31718214Speter Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 31818214Speter This is free software, and you are welcome to redistribute it 31918214Speter under certain conditions; type `show c' for details. 32018214Speter 32167064SobrienThe hypothetical commands `show w' and `show c' should show the appropriate 32267064Sobrienparts of the General Public License. Of course, the commands you use may 32367064Sobrienbe called something other than `show w' and `show c'; they could even be 32467064Sobrienmouse-clicks or menu items--whatever suits your program. 32518214Speter 32618214SpeterYou should also get your employer (if you work as a programmer) or your 32718214Speterschool, if any, to sign a "copyright disclaimer" for the program, if 32867064Sobriennecessary. Here is a sample; alter the names: 32918214Speter 33067064Sobrien Yoyodyne, Inc., hereby disclaims all copyright interest in the program 33167064Sobrien `Gnomovision' (which makes passes at compilers) written by James Hacker. 33218214Speter 33318214Speter <signature of Ty Coon>, 1 April 1989 33418214Speter Ty Coon, President of Vice 33518214Speter 33667064SobrienThis General Public License does not permit incorporating your program into 33767064Sobrienproprietary programs. If your program is a subroutine library, you may 33867064Sobrienconsider it more useful to permit linking proprietary applications with the 33967064Sobrienlibrary. If this is what you want to do, use the GNU Library General 34067064SobrienPublic License instead of this License. 341