nkeynes@179: GNU GENERAL PUBLIC LICENSE nkeynes@179: Version 2, June 1991 nkeynes@179: nkeynes@179: Copyright (C) 1989, 1991 Free Software Foundation, Inc. nkeynes@179: 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA nkeynes@179: Everyone is permitted to copy and distribute verbatim copies nkeynes@179: of this license document, but changing it is not allowed. nkeynes@179: nkeynes@179: Preamble nkeynes@179: nkeynes@179: The licenses for most software are designed to take away your nkeynes@179: freedom to share and change it. By contrast, the GNU General Public nkeynes@179: License is intended to guarantee your freedom to share and change free nkeynes@179: software--to make sure the software is free for all its users. This nkeynes@179: General Public License applies to most of the Free Software nkeynes@179: Foundation's software and to any other program whose authors commit to nkeynes@179: using it. (Some other Free Software Foundation software is covered by nkeynes@179: the GNU Library General Public License instead.) You can apply it to nkeynes@179: your programs, too. nkeynes@179: nkeynes@179: When we speak of free software, we are referring to freedom, not nkeynes@179: price. Our General Public Licenses are designed to make sure that you nkeynes@179: have the freedom to distribute copies of free software (and charge for nkeynes@179: this service if you wish), that you receive source code or can get it nkeynes@179: if you want it, that you can change the software or use pieces of it nkeynes@179: in new free programs; and that you know you can do these things. nkeynes@179: nkeynes@179: To protect your rights, we need to make restrictions that forbid nkeynes@179: anyone to deny you these rights or to ask you to surrender the rights. nkeynes@179: These restrictions translate to certain responsibilities for you if you nkeynes@179: distribute copies of the software, or if you modify it. nkeynes@179: nkeynes@179: For example, if you distribute copies of such a program, whether nkeynes@179: gratis or for a fee, you must give the recipients all the rights that nkeynes@179: you have. You must make sure that they, too, receive or can get the nkeynes@179: source code. And you must show them these terms so they know their nkeynes@179: rights. nkeynes@179: nkeynes@179: We protect your rights with two steps: (1) copyright the software, and nkeynes@179: (2) offer you this license which gives you legal permission to copy, nkeynes@179: distribute and/or modify the software. nkeynes@179: nkeynes@179: Also, for each author's protection and ours, we want to make certain nkeynes@179: that everyone understands that there is no warranty for this free nkeynes@179: software. If the software is modified by someone else and passed on, we nkeynes@179: want its recipients to know that what they have is not the original, so nkeynes@179: that any problems introduced by others will not reflect on the original nkeynes@179: authors' reputations. nkeynes@179: nkeynes@179: Finally, any free program is threatened constantly by software nkeynes@179: patents. We wish to avoid the danger that redistributors of a free nkeynes@179: program will individually obtain patent licenses, in effect making the nkeynes@179: program proprietary. To prevent this, we have made it clear that any nkeynes@179: patent must be licensed for everyone's free use or not licensed at all. nkeynes@179: nkeynes@179: The precise terms and conditions for copying, distribution and nkeynes@179: modification follow. nkeynes@179: nkeynes@179: GNU GENERAL PUBLIC LICENSE nkeynes@179: TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION nkeynes@179: nkeynes@179: 0. This License applies to any program or other work which contains nkeynes@179: a notice placed by the copyright holder saying it may be distributed nkeynes@179: under the terms of this General Public License. The "Program", below, nkeynes@179: refers to any such program or work, and a "work based on the Program" nkeynes@179: means either the Program or any derivative work under copyright law: nkeynes@179: that is to say, a work containing the Program or a portion of it, nkeynes@179: either verbatim or with modifications and/or translated into another nkeynes@179: language. (Hereinafter, translation is included without limitation in nkeynes@179: the term "modification".) Each licensee is addressed as "you". nkeynes@179: nkeynes@179: Activities other than copying, distribution and modification are not nkeynes@179: covered by this License; they are outside its scope. The act of nkeynes@179: running the Program is not restricted, and the output from the Program nkeynes@179: is covered only if its contents constitute a work based on the nkeynes@179: Program (independent of having been made by running the Program). nkeynes@179: Whether that is true depends on what the Program does. nkeynes@179: nkeynes@179: 1. You may copy and distribute verbatim copies of the Program's nkeynes@179: source code as you receive it, in any medium, provided that you nkeynes@179: conspicuously and appropriately publish on each copy an appropriate nkeynes@179: copyright notice and disclaimer of warranty; keep intact all the nkeynes@179: notices that refer to this License and to the absence of any warranty; nkeynes@179: and give any other recipients of the Program a copy of this License nkeynes@179: along with the Program. nkeynes@179: nkeynes@179: You may charge a fee for the physical act of transferring a copy, and nkeynes@179: you may at your option offer warranty protection in exchange for a fee. nkeynes@179: nkeynes@179: 2. You may modify your copy or copies of the Program or any portion nkeynes@179: of it, thus forming a work based on the Program, and copy and nkeynes@179: distribute such modifications or work under the terms of Section 1 nkeynes@179: above, provided that you also meet all of these conditions: nkeynes@179: nkeynes@179: a) You must cause the modified files to carry prominent notices nkeynes@179: stating that you changed the files and the date of any change. nkeynes@179: nkeynes@179: b) You must cause any work that you distribute or publish, that in nkeynes@179: whole or in part contains or is derived from the Program or any nkeynes@179: part thereof, to be licensed as a whole at no charge to all third nkeynes@179: parties under the terms of this License. nkeynes@179: nkeynes@179: c) If the modified program normally reads commands interactively nkeynes@179: when run, you must cause it, when started running for such nkeynes@179: interactive use in the most ordinary way, to print or display an nkeynes@179: announcement including an appropriate copyright notice and a nkeynes@179: notice that there is no warranty (or else, saying that you provide nkeynes@179: a warranty) and that users may redistribute the program under nkeynes@179: these conditions, and telling the user how to view a copy of this nkeynes@179: License. (Exception: if the Program itself is interactive but nkeynes@179: does not normally print such an announcement, your work based on nkeynes@179: the Program is not required to print an announcement.) nkeynes@179: nkeynes@179: These requirements apply to the modified work as a whole. If nkeynes@179: identifiable sections of that work are not derived from the Program, nkeynes@179: and can be reasonably considered independent and separate works in nkeynes@179: themselves, then this License, and its terms, do not apply to those nkeynes@179: sections when you distribute them as separate works. But when you nkeynes@179: distribute the same sections as part of a whole which is a work based nkeynes@179: on the Program, the distribution of the whole must be on the terms of nkeynes@179: this License, whose permissions for other licensees extend to the nkeynes@179: entire whole, and thus to each and every part regardless of who wrote it. nkeynes@179: nkeynes@179: Thus, it is not the intent of this section to claim rights or contest nkeynes@179: your rights to work written entirely by you; rather, the intent is to nkeynes@179: exercise the right to control the distribution of derivative or nkeynes@179: collective works based on the Program. nkeynes@179: nkeynes@179: In addition, mere aggregation of another work not based on the Program nkeynes@179: with the Program (or with a work based on the Program) on a volume of nkeynes@179: a storage or distribution medium does not bring the other work under nkeynes@179: the scope of this License. nkeynes@179: nkeynes@179: 3. You may copy and distribute the Program (or a work based on it, nkeynes@179: under Section 2) in object code or executable form under the terms of nkeynes@179: Sections 1 and 2 above provided that you also do one of the following: nkeynes@179: nkeynes@179: a) Accompany it with the complete corresponding machine-readable nkeynes@179: source code, which must be distributed under the terms of Sections nkeynes@179: 1 and 2 above on a medium customarily used for software interchange; or, nkeynes@179: nkeynes@179: b) Accompany it with a written offer, valid for at least three nkeynes@179: years, to give any third party, for a charge no more than your nkeynes@179: cost of physically performing source distribution, a complete nkeynes@179: machine-readable copy of the corresponding source code, to be nkeynes@179: distributed under the terms of Sections 1 and 2 above on a medium nkeynes@179: customarily used for software interchange; or, nkeynes@179: nkeynes@179: c) Accompany it with the information you received as to the offer nkeynes@179: to distribute corresponding source code. (This alternative is nkeynes@179: allowed only for noncommercial distribution and only if you nkeynes@179: received the program in object code or executable form with such nkeynes@179: an offer, in accord with Subsection b above.) nkeynes@179: nkeynes@179: The source code for a work means the preferred form of the work for nkeynes@179: making modifications to it. For an executable work, complete source nkeynes@179: code means all the source code for all modules it contains, plus any nkeynes@179: associated interface definition files, plus the scripts used to nkeynes@179: control compilation and installation of the executable. However, as a nkeynes@179: special exception, the source code distributed need not include nkeynes@179: anything that is normally distributed (in either source or binary nkeynes@179: form) with the major components (compiler, kernel, and so on) of the nkeynes@179: operating system on which the executable runs, unless that component nkeynes@179: itself accompanies the executable. nkeynes@179: nkeynes@179: If distribution of executable or object code is made by offering nkeynes@179: access to copy from a designated place, then offering equivalent nkeynes@179: access to copy the source code from the same place counts as nkeynes@179: distribution of the source code, even though third parties are not nkeynes@179: compelled to copy the source along with the object code. nkeynes@179: nkeynes@179: 4. You may not copy, modify, sublicense, or distribute the Program nkeynes@179: except as expressly provided under this License. Any attempt nkeynes@179: otherwise to copy, modify, sublicense or distribute the Program is nkeynes@179: void, and will automatically terminate your rights under this License. nkeynes@179: However, parties who have received copies, or rights, from you under nkeynes@179: this License will not have their licenses terminated so long as such nkeynes@179: parties remain in full compliance. nkeynes@179: nkeynes@179: 5. You are not required to accept this License, since you have not nkeynes@179: signed it. However, nothing else grants you permission to modify or nkeynes@179: distribute the Program or its derivative works. These actions are nkeynes@179: prohibited by law if you do not accept this License. Therefore, by nkeynes@179: modifying or distributing the Program (or any work based on the nkeynes@179: Program), you indicate your acceptance of this License to do so, and nkeynes@179: all its terms and conditions for copying, distributing or modifying nkeynes@179: the Program or works based on it. nkeynes@179: nkeynes@179: 6. Each time you redistribute the Program (or any work based on the nkeynes@179: Program), the recipient automatically receives a license from the nkeynes@179: original licensor to copy, distribute or modify the Program subject to nkeynes@179: these terms and conditions. You may not impose any further nkeynes@179: restrictions on the recipients' exercise of the rights granted herein. nkeynes@179: You are not responsible for enforcing compliance by third parties to nkeynes@179: this License. nkeynes@179: nkeynes@179: 7. If, as a consequence of a court judgment or allegation of patent nkeynes@179: infringement or for any other reason (not limited to patent issues), nkeynes@179: conditions are imposed on you (whether by court order, agreement or nkeynes@179: otherwise) that contradict the conditions of this License, they do not nkeynes@179: excuse you from the conditions of this License. If you cannot nkeynes@179: distribute so as to satisfy simultaneously your obligations under this nkeynes@179: License and any other pertinent obligations, then as a consequence you nkeynes@179: may not distribute the Program at all. For example, if a patent nkeynes@179: license would not permit royalty-free redistribution of the Program by nkeynes@179: all those who receive copies directly or indirectly through you, then nkeynes@179: the only way you could satisfy both it and this License would be to nkeynes@179: refrain entirely from distribution of the Program. nkeynes@179: nkeynes@179: If any portion of this section is held invalid or unenforceable under nkeynes@179: any particular circumstance, the balance of the section is intended to nkeynes@179: apply and the section as a whole is intended to apply in other nkeynes@179: circumstances. nkeynes@179: nkeynes@179: It is not the purpose of this section to induce you to infringe any nkeynes@179: patents or other property right claims or to contest validity of any nkeynes@179: such claims; this section has the sole purpose of protecting the nkeynes@179: integrity of the free software distribution system, which is nkeynes@179: implemented by public license practices. Many people have made nkeynes@179: generous contributions to the wide range of software distributed nkeynes@179: through that system in reliance on consistent application of that nkeynes@179: system; it is up to the author/donor to decide if he or she is willing nkeynes@179: to distribute software through any other system and a licensee cannot nkeynes@179: impose that choice. nkeynes@179: nkeynes@179: This section is intended to make thoroughly clear what is believed to nkeynes@179: be a consequence of the rest of this License. nkeynes@179: nkeynes@179: 8. If the distribution and/or use of the Program is restricted in nkeynes@179: certain countries either by patents or by copyrighted interfaces, the nkeynes@179: original copyright holder who places the Program under this License nkeynes@179: may add an explicit geographical distribution limitation excluding nkeynes@179: those countries, so that distribution is permitted only in or among nkeynes@179: countries not thus excluded. In such case, this License incorporates nkeynes@179: the limitation as if written in the body of this License. nkeynes@179: nkeynes@179: 9. The Free Software Foundation may publish revised and/or new versions nkeynes@179: of the General Public License from time to time. Such new versions will nkeynes@179: be similar in spirit to the present version, but may differ in detail to nkeynes@179: address new problems or concerns. nkeynes@179: nkeynes@179: Each version is given a distinguishing version number. If the Program nkeynes@179: specifies a version number of this License which applies to it and "any nkeynes@179: later version", you have the option of following the terms and conditions nkeynes@179: either of that version or of any later version published by the Free nkeynes@179: Software Foundation. If the Program does not specify a version number of nkeynes@179: this License, you may choose any version ever published by the Free Software nkeynes@179: Foundation. nkeynes@179: nkeynes@179: 10. If you wish to incorporate parts of the Program into other free nkeynes@179: programs whose distribution conditions are different, write to the author nkeynes@179: to ask for permission. For software which is copyrighted by the Free nkeynes@179: Software Foundation, write to the Free Software Foundation; we sometimes nkeynes@179: make exceptions for this. Our decision will be guided by the two goals nkeynes@179: of preserving the free status of all derivatives of our free software and nkeynes@179: of promoting the sharing and reuse of software generally. nkeynes@179: nkeynes@179: NO WARRANTY nkeynes@179: nkeynes@179: 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY nkeynes@179: FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN nkeynes@179: OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES nkeynes@179: PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED nkeynes@179: OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF nkeynes@179: MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS nkeynes@179: TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE nkeynes@179: PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, nkeynes@179: REPAIR OR CORRECTION. nkeynes@179: nkeynes@179: 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING nkeynes@179: WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR nkeynes@179: REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, nkeynes@179: INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING nkeynes@179: OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED nkeynes@179: TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY nkeynes@179: YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER nkeynes@179: PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE nkeynes@179: POSSIBILITY OF SUCH DAMAGES. nkeynes@179: nkeynes@179: END OF TERMS AND CONDITIONS nkeynes@179: nkeynes@179: How to Apply These Terms to Your New Programs nkeynes@179: nkeynes@179: If you develop a new program, and you want it to be of the greatest nkeynes@179: possible use to the public, the best way to achieve this is to make it nkeynes@179: free software which everyone can redistribute and change under these terms. nkeynes@179: nkeynes@179: To do so, attach the following notices to the program. It is safest nkeynes@179: to attach them to the start of each source file to most effectively nkeynes@179: convey the exclusion of warranty; and each file should have at least nkeynes@179: the "copyright" line and a pointer to where the full notice is found. nkeynes@179: nkeynes@179: nkeynes@179: Copyright (C) nkeynes@179: nkeynes@179: This program is free software; you can redistribute it and/or modify nkeynes@179: it under the terms of the GNU General Public License as published by nkeynes@179: the Free Software Foundation; either version 2 of the License, or nkeynes@179: (at your option) any later version. nkeynes@179: nkeynes@179: This program is distributed in the hope that it will be useful, nkeynes@179: but WITHOUT ANY WARRANTY; without even the implied warranty of nkeynes@179: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the nkeynes@179: GNU General Public License for more details. nkeynes@179: nkeynes@179: You should have received a copy of the GNU General Public License nkeynes@179: along with this program; if not, write to the Free Software nkeynes@179: Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA nkeynes@179: nkeynes@179: nkeynes@179: Also add information on how to contact you by electronic and paper mail. nkeynes@179: nkeynes@179: If the program is interactive, make it output a short notice like this nkeynes@179: when it starts in an interactive mode: nkeynes@179: nkeynes@179: Gnomovision version 69, Copyright (C) year name of author nkeynes@179: Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. nkeynes@179: This is free software, and you are welcome to redistribute it nkeynes@179: under certain conditions; type `show c' for details. nkeynes@179: nkeynes@179: The hypothetical commands `show w' and `show c' should show the appropriate nkeynes@179: parts of the General Public License. Of course, the commands you use may nkeynes@179: be called something other than `show w' and `show c'; they could even be nkeynes@179: mouse-clicks or menu items--whatever suits your program. nkeynes@179: nkeynes@179: You should also get your employer (if you work as a programmer) or your nkeynes@179: school, if any, to sign a "copyright disclaimer" for the program, if nkeynes@179: necessary. Here is a sample; alter the names: nkeynes@179: nkeynes@179: Yoyodyne, Inc., hereby disclaims all copyright interest in the program nkeynes@179: `Gnomovision' (which makes passes at compilers) written by James Hacker. nkeynes@179: nkeynes@179: , 1 April 1989 nkeynes@179: Ty Coon, President of Vice nkeynes@179: nkeynes@179: This General Public License does not permit incorporating your program into nkeynes@179: proprietary programs. If your program is a subroutine library, you may nkeynes@179: consider it more useful to permit linking proprietary applications with the nkeynes@179: library. If this is what you want to do, use the GNU Library General nkeynes@179: Public License instead of this License.