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