emanuel@1203: GNU GENERAL PUBLIC LICENSE emanuel@1203: Version 2, June 1991 emanuel@1203: emanuel@1203: Copyright (C) 1989, 1991 Free Software Foundation, Inc., emanuel@1203: 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA emanuel@1203: Everyone is permitted to copy and distribute verbatim copies emanuel@1203: of this license document, but changing it is not allowed. emanuel@1203: emanuel@1203: Preamble emanuel@1203: emanuel@1203: The licenses for most software are designed to take away your emanuel@1203: freedom to share and change it. By contrast, the GNU General Public emanuel@1203: License is intended to guarantee your freedom to share and change free emanuel@1203: software--to make sure the software is free for all its users. This emanuel@1203: General Public License applies to most of the Free Software emanuel@1203: Foundation's software and to any other program whose authors commit to emanuel@1203: using it. (Some other Free Software Foundation software is covered by emanuel@1203: the GNU Lesser General Public License instead.) You can apply it to emanuel@1203: your programs, too. emanuel@1203: emanuel@1203: When we speak of free software, we are referring to freedom, not emanuel@1203: price. Our General Public Licenses are designed to make sure that you emanuel@1203: have the freedom to distribute copies of free software (and charge for emanuel@1203: this service if you wish), that you receive source code or can get it emanuel@1203: if you want it, that you can change the software or use pieces of it emanuel@1203: in new free programs; and that you know you can do these things. emanuel@1203: emanuel@1203: To protect your rights, we need to make restrictions that forbid emanuel@1203: anyone to deny you these rights or to ask you to surrender the rights. emanuel@1203: These restrictions translate to certain responsibilities for you if you emanuel@1203: distribute copies of the software, or if you modify it. emanuel@1203: emanuel@1203: For example, if you distribute copies of such a program, whether emanuel@1203: gratis or for a fee, you must give the recipients all the rights that emanuel@1203: you have. You must make sure that they, too, receive or can get the emanuel@1203: source code. And you must show them these terms so they know their emanuel@1203: rights. emanuel@1203: emanuel@1203: We protect your rights with two steps: (1) copyright the software, and emanuel@1203: (2) offer you this license which gives you legal permission to copy, emanuel@1203: distribute and/or modify the software. emanuel@1203: emanuel@1203: Also, for each author's protection and ours, we want to make certain emanuel@1203: that everyone understands that there is no warranty for this free emanuel@1203: software. If the software is modified by someone else and passed on, we emanuel@1203: want its recipients to know that what they have is not the original, so emanuel@1203: that any problems introduced by others will not reflect on the original emanuel@1203: authors' reputations. emanuel@1203: emanuel@1203: Finally, any free program is threatened constantly by software emanuel@1203: patents. We wish to avoid the danger that redistributors of a free emanuel@1203: program will individually obtain patent licenses, in effect making the emanuel@1203: program proprietary. To prevent this, we have made it clear that any emanuel@1203: patent must be licensed for everyone's free use or not licensed at all. emanuel@1203: emanuel@1203: The precise terms and conditions for copying, distribution and emanuel@1203: modification follow. emanuel@1203: emanuel@1203: GNU GENERAL PUBLIC LICENSE emanuel@1203: TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION emanuel@1203: emanuel@1203: 0. This License applies to any program or other work which contains emanuel@1203: a notice placed by the copyright holder saying it may be distributed emanuel@1203: under the terms of this General Public License. The "Program", below, emanuel@1203: refers to any such program or work, and a "work based on the Program" emanuel@1203: means either the Program or any derivative work under copyright law: emanuel@1203: that is to say, a work containing the Program or a portion of it, emanuel@1203: either verbatim or with modifications and/or translated into another emanuel@1203: language. (Hereinafter, translation is included without limitation in emanuel@1203: the term "modification".) Each licensee is addressed as "you". emanuel@1203: emanuel@1203: Activities other than copying, distribution and modification are not emanuel@1203: covered by this License; they are outside its scope. The act of emanuel@1203: running the Program is not restricted, and the output from the Program emanuel@1203: is covered only if its contents constitute a work based on the emanuel@1203: Program (independent of having been made by running the Program). emanuel@1203: Whether that is true depends on what the Program does. emanuel@1203: emanuel@1203: 1. You may copy and distribute verbatim copies of the Program's emanuel@1203: source code as you receive it, in any medium, provided that you emanuel@1203: conspicuously and appropriately publish on each copy an appropriate emanuel@1203: copyright notice and disclaimer of warranty; keep intact all the emanuel@1203: notices that refer to this License and to the absence of any warranty; emanuel@1203: and give any other recipients of the Program a copy of this License emanuel@1203: along with the Program. emanuel@1203: emanuel@1203: You may charge a fee for the physical act of transferring a copy, and emanuel@1203: you may at your option offer warranty protection in exchange for a fee. emanuel@1203: emanuel@1203: 2. You may modify your copy or copies of the Program or any portion emanuel@1203: of it, thus forming a work based on the Program, and copy and emanuel@1203: distribute such modifications or work under the terms of Section 1 emanuel@1203: above, provided that you also meet all of these conditions: emanuel@1203: emanuel@1203: a) You must cause the modified files to carry prominent notices emanuel@1203: stating that you changed the files and the date of any change. emanuel@1203: emanuel@1203: b) You must cause any work that you distribute or publish, that in emanuel@1203: whole or in part contains or is derived from the Program or any emanuel@1203: part thereof, to be licensed as a whole at no charge to all third emanuel@1203: parties under the terms of this License. emanuel@1203: emanuel@1203: c) If the modified program normally reads commands interactively emanuel@1203: when run, you must cause it, when started running for such emanuel@1203: interactive use in the most ordinary way, to print or display an emanuel@1203: announcement including an appropriate copyright notice and a emanuel@1203: notice that there is no warranty (or else, saying that you provide emanuel@1203: a warranty) and that users may redistribute the program under emanuel@1203: these conditions, and telling the user how to view a copy of this emanuel@1203: License. (Exception: if the Program itself is interactive but emanuel@1203: does not normally print such an announcement, your work based on emanuel@1203: the Program is not required to print an announcement.) emanuel@1203: emanuel@1203: These requirements apply to the modified work as a whole. If emanuel@1203: identifiable sections of that work are not derived from the Program, emanuel@1203: and can be reasonably considered independent and separate works in emanuel@1203: themselves, then this License, and its terms, do not apply to those emanuel@1203: sections when you distribute them as separate works. But when you emanuel@1203: distribute the same sections as part of a whole which is a work based emanuel@1203: on the Program, the distribution of the whole must be on the terms of emanuel@1203: this License, whose permissions for other licensees extend to the emanuel@1203: entire whole, and thus to each and every part regardless of who wrote it. emanuel@1203: emanuel@1203: Thus, it is not the intent of this section to claim rights or contest emanuel@1203: your rights to work written entirely by you; rather, the intent is to emanuel@1203: exercise the right to control the distribution of derivative or emanuel@1203: collective works based on the Program. emanuel@1203: emanuel@1203: In addition, mere aggregation of another work not based on the Program emanuel@1203: with the Program (or with a work based on the Program) on a volume of emanuel@1203: a storage or distribution medium does not bring the other work under emanuel@1203: the scope of this License. emanuel@1203: emanuel@1203: 3. You may copy and distribute the Program (or a work based on it, emanuel@1203: under Section 2) in object code or executable form under the terms of emanuel@1203: Sections 1 and 2 above provided that you also do one of the following: emanuel@1203: emanuel@1203: a) Accompany it with the complete corresponding machine-readable emanuel@1203: source code, which must be distributed under the terms of Sections emanuel@1203: 1 and 2 above on a medium customarily used for software interchange; or, emanuel@1203: emanuel@1203: b) Accompany it with a written offer, valid for at least three emanuel@1203: years, to give any third party, for a charge no more than your emanuel@1203: cost of physically performing source distribution, a complete emanuel@1203: machine-readable copy of the corresponding source code, to be emanuel@1203: distributed under the terms of Sections 1 and 2 above on a medium emanuel@1203: customarily used for software interchange; or, emanuel@1203: emanuel@1203: c) Accompany it with the information you received as to the offer emanuel@1203: to distribute corresponding source code. (This alternative is emanuel@1203: allowed only for noncommercial distribution and only if you emanuel@1203: received the program in object code or executable form with such emanuel@1203: an offer, in accord with Subsection b above.) emanuel@1203: emanuel@1203: The source code for a work means the preferred form of the work for emanuel@1203: making modifications to it. For an executable work, complete source emanuel@1203: code means all the source code for all modules it contains, plus any emanuel@1203: associated interface definition files, plus the scripts used to emanuel@1203: control compilation and installation of the executable. However, as a emanuel@1203: special exception, the source code distributed need not include emanuel@1203: anything that is normally distributed (in either source or binary emanuel@1203: form) with the major components (compiler, kernel, and so on) of the emanuel@1203: operating system on which the executable runs, unless that component emanuel@1203: itself accompanies the executable. emanuel@1203: emanuel@1203: If distribution of executable or object code is made by offering emanuel@1203: access to copy from a designated place, then offering equivalent emanuel@1203: access to copy the source code from the same place counts as emanuel@1203: distribution of the source code, even though third parties are not emanuel@1203: compelled to copy the source along with the object code. emanuel@1203: emanuel@1203: 4. You may not copy, modify, sublicense, or distribute the Program emanuel@1203: except as expressly provided under this License. Any attempt emanuel@1203: otherwise to copy, modify, sublicense or distribute the Program is emanuel@1203: void, and will automatically terminate your rights under this License. emanuel@1203: However, parties who have received copies, or rights, from you under emanuel@1203: this License will not have their licenses terminated so long as such emanuel@1203: parties remain in full compliance. emanuel@1203: emanuel@1203: 5. You are not required to accept this License, since you have not emanuel@1203: signed it. However, nothing else grants you permission to modify or emanuel@1203: distribute the Program or its derivative works. These actions are emanuel@1203: prohibited by law if you do not accept this License. Therefore, by emanuel@1203: modifying or distributing the Program (or any work based on the emanuel@1203: Program), you indicate your acceptance of this License to do so, and emanuel@1203: all its terms and conditions for copying, distributing or modifying emanuel@1203: the Program or works based on it. emanuel@1203: emanuel@1203: 6. Each time you redistribute the Program (or any work based on the emanuel@1203: Program), the recipient automatically receives a license from the emanuel@1203: original licensor to copy, distribute or modify the Program subject to emanuel@1203: these terms and conditions. You may not impose any further emanuel@1203: restrictions on the recipients' exercise of the rights granted herein. emanuel@1203: You are not responsible for enforcing compliance by third parties to emanuel@1203: this License. emanuel@1203: emanuel@1203: 7. If, as a consequence of a court judgment or allegation of patent emanuel@1203: infringement or for any other reason (not limited to patent issues), emanuel@1203: conditions are imposed on you (whether by court order, agreement or emanuel@1203: otherwise) that contradict the conditions of this License, they do not emanuel@1203: excuse you from the conditions of this License. If you cannot emanuel@1203: distribute so as to satisfy simultaneously your obligations under this emanuel@1203: License and any other pertinent obligations, then as a consequence you emanuel@1203: may not distribute the Program at all. For example, if a patent emanuel@1203: license would not permit royalty-free redistribution of the Program by emanuel@1203: all those who receive copies directly or indirectly through you, then emanuel@1203: the only way you could satisfy both it and this License would be to emanuel@1203: refrain entirely from distribution of the Program. emanuel@1203: emanuel@1203: If any portion of this section is held invalid or unenforceable under emanuel@1203: any particular circumstance, the balance of the section is intended to emanuel@1203: apply and the section as a whole is intended to apply in other emanuel@1203: circumstances. emanuel@1203: emanuel@1203: It is not the purpose of this section to induce you to infringe any emanuel@1203: patents or other property right claims or to contest validity of any emanuel@1203: such claims; this section has the sole purpose of protecting the emanuel@1203: integrity of the free software distribution system, which is emanuel@1203: implemented by public license practices. Many people have made emanuel@1203: generous contributions to the wide range of software distributed emanuel@1203: through that system in reliance on consistent application of that emanuel@1203: system; it is up to the author/donor to decide if he or she is willing emanuel@1203: to distribute software through any other system and a licensee cannot emanuel@1203: impose that choice. emanuel@1203: emanuel@1203: This section is intended to make thoroughly clear what is believed to emanuel@1203: be a consequence of the rest of this License. emanuel@1203: emanuel@1203: 8. If the distribution and/or use of the Program is restricted in emanuel@1203: certain countries either by patents or by copyrighted interfaces, the emanuel@1203: original copyright holder who places the Program under this License emanuel@1203: may add an explicit geographical distribution limitation excluding emanuel@1203: those countries, so that distribution is permitted only in or among emanuel@1203: countries not thus excluded. In such case, this License incorporates emanuel@1203: the limitation as if written in the body of this License. emanuel@1203: emanuel@1203: 9. The Free Software Foundation may publish revised and/or new versions emanuel@1203: of the General Public License from time to time. Such new versions will emanuel@1203: be similar in spirit to the present version, but may differ in detail to emanuel@1203: address new problems or concerns. emanuel@1203: emanuel@1203: Each version is given a distinguishing version number. If the Program emanuel@1203: specifies a version number of this License which applies to it and "any emanuel@1203: later version", you have the option of following the terms and conditions emanuel@1203: either of that version or of any later version published by the Free emanuel@1203: Software Foundation. If the Program does not specify a version number of emanuel@1203: this License, you may choose any version ever published by the Free Software emanuel@1203: Foundation. emanuel@1203: emanuel@1203: 10. If you wish to incorporate parts of the Program into other free emanuel@1203: programs whose distribution conditions are different, write to the author emanuel@1203: to ask for permission. For software which is copyrighted by the Free emanuel@1203: Software Foundation, write to the Free Software Foundation; we sometimes emanuel@1203: make exceptions for this. Our decision will be guided by the two goals emanuel@1203: of preserving the free status of all derivatives of our free software and emanuel@1203: of promoting the sharing and reuse of software generally. emanuel@1203: emanuel@1203: NO WARRANTY emanuel@1203: emanuel@1203: 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY emanuel@1203: FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN emanuel@1203: OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES emanuel@1203: PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED emanuel@1203: OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF emanuel@1203: MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS emanuel@1203: TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE emanuel@1203: PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, emanuel@1203: REPAIR OR CORRECTION. emanuel@1203: emanuel@1203: 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING emanuel@1203: WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR emanuel@1203: REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, emanuel@1203: INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING emanuel@1203: OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED emanuel@1203: TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY emanuel@1203: YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER emanuel@1203: PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE emanuel@1203: POSSIBILITY OF SUCH DAMAGES. emanuel@1203: emanuel@1203: END OF TERMS AND CONDITIONS emanuel@1203: emanuel@1203: How to Apply These Terms to Your New Programs emanuel@1203: emanuel@1203: If you develop a new program, and you want it to be of the greatest emanuel@1203: possible use to the public, the best way to achieve this is to make it emanuel@1203: free software which everyone can redistribute and change under these terms. emanuel@1203: emanuel@1203: To do so, attach the following notices to the program. It is safest emanuel@1203: to attach them to the start of each source file to most effectively emanuel@1203: convey the exclusion of warranty; and each file should have at least emanuel@1203: the "copyright" line and a pointer to where the full notice is found. emanuel@1203: emanuel@1203: emanuel@1203: Copyright (C) emanuel@1203: emanuel@1203: This program is free software; you can redistribute it and/or modify emanuel@1203: it under the terms of the GNU General Public License as published by emanuel@1203: the Free Software Foundation; either version 2 of the License, or emanuel@1203: (at your option) any later version. emanuel@1203: emanuel@1203: This program is distributed in the hope that it will be useful, emanuel@1203: but WITHOUT ANY WARRANTY; without even the implied warranty of emanuel@1203: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the emanuel@1203: GNU General Public License for more details. emanuel@1203: emanuel@1203: You should have received a copy of the GNU General Public License along emanuel@1203: with this program; if not, write to the Free Software Foundation, Inc., emanuel@1203: 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. emanuel@1203: emanuel@1203: Also add information on how to contact you by electronic and paper mail. emanuel@1203: emanuel@1203: If the program is interactive, make it output a short notice like this emanuel@1203: when it starts in an interactive mode: emanuel@1203: emanuel@1203: Gnomovision version 69, Copyright (C) year name of author emanuel@1203: Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. emanuel@1203: This is free software, and you are welcome to redistribute it emanuel@1203: under certain conditions; type `show c' for details. emanuel@1203: emanuel@1203: The hypothetical commands `show w' and `show c' should show the appropriate emanuel@1203: parts of the General Public License. Of course, the commands you use may emanuel@1203: be called something other than `show w' and `show c'; they could even be emanuel@1203: mouse-clicks or menu items--whatever suits your program. emanuel@1203: emanuel@1203: You should also get your employer (if you work as a programmer) or your emanuel@1203: school, if any, to sign a "copyright disclaimer" for the program, if emanuel@1203: necessary. Here is a sample; alter the names: emanuel@1203: emanuel@1203: Yoyodyne, Inc., hereby disclaims all copyright interest in the program emanuel@1203: `Gnomovision' (which makes passes at compilers) written by James Hacker. emanuel@1203: emanuel@1203: , 1 April 1989 emanuel@1203: Ty Coon, President of Vice emanuel@1203: emanuel@1203: This General Public License does not permit incorporating your program into emanuel@1203: proprietary programs. If your program is a subroutine library, you may emanuel@1203: consider it more useful to permit linking proprietary applications with the emanuel@1203: library. If this is what you want to do, use the GNU Lesser General emanuel@1203: Public License instead of this License.