melunko@47: GNU GENERAL PUBLIC LICENSE melunko@47: Version 2, June 1991 melunko@47: melunko@47: Copyright (C) 1989, 1991 Free Software Foundation, Inc. melunko@47: 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA melunko@47: Everyone is permitted to copy and distribute verbatim copies melunko@47: of this license document, but changing it is not allowed. melunko@47: melunko@47: Preamble melunko@47: melunko@47: The licenses for most software are designed to take away your melunko@47: freedom to share and change it. By contrast, the GNU General Public melunko@47: License is intended to guarantee your freedom to share and change free melunko@47: software--to make sure the software is free for all its users. This melunko@47: General Public License applies to most of the Free Software melunko@47: Foundation's software and to any other program whose authors commit to melunko@47: using it. (Some other Free Software Foundation software is covered by melunko@47: the GNU Library General Public License instead.) You can apply it to melunko@47: your programs, too. melunko@47: melunko@47: When we speak of free software, we are referring to freedom, not melunko@47: price. Our General Public Licenses are designed to make sure that you melunko@47: have the freedom to distribute copies of free software (and charge for melunko@47: this service if you wish), that you receive source code or can get it melunko@47: if you want it, that you can change the software or use pieces of it melunko@47: in new free programs; and that you know you can do these things. melunko@47: melunko@47: To protect your rights, we need to make restrictions that forbid melunko@47: anyone to deny you these rights or to ask you to surrender the rights. melunko@47: These restrictions translate to certain responsibilities for you if you melunko@47: distribute copies of the software, or if you modify it. melunko@47: melunko@47: For example, if you distribute copies of such a program, whether melunko@47: gratis or for a fee, you must give the recipients all the rights that melunko@47: you have. You must make sure that they, too, receive or can get the melunko@47: source code. And you must show them these terms so they know their melunko@47: rights. melunko@47: melunko@47: We protect your rights with two steps: (1) copyright the software, and melunko@47: (2) offer you this license which gives you legal permission to copy, melunko@47: distribute and/or modify the software. melunko@47: melunko@47: Also, for each author's protection and ours, we want to make certain melunko@47: that everyone understands that there is no warranty for this free melunko@47: software. If the software is modified by someone else and passed on, we melunko@47: want its recipients to know that what they have is not the original, so melunko@47: that any problems introduced by others will not reflect on the original melunko@47: authors' reputations. melunko@47: melunko@47: Finally, any free program is threatened constantly by software melunko@47: patents. We wish to avoid the danger that redistributors of a free melunko@47: program will individually obtain patent licenses, in effect making the melunko@47: program proprietary. To prevent this, we have made it clear that any melunko@47: patent must be licensed for everyone's free use or not licensed at all. melunko@47: melunko@47: The precise terms and conditions for copying, distribution and melunko@47: modification follow. melunko@47: melunko@47: GNU GENERAL PUBLIC LICENSE melunko@47: TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION melunko@47: melunko@47: 0. This License applies to any program or other work which contains melunko@47: a notice placed by the copyright holder saying it may be distributed melunko@47: under the terms of this General Public License. The "Program", below, melunko@47: refers to any such program or work, and a "work based on the Program" melunko@47: means either the Program or any derivative work under copyright law: melunko@47: that is to say, a work containing the Program or a portion of it, melunko@47: either verbatim or with modifications and/or translated into another melunko@47: language. (Hereinafter, translation is included without limitation in melunko@47: the term "modification".) Each licensee is addressed as "you". melunko@47: melunko@47: Activities other than copying, distribution and modification are not melunko@47: covered by this License; they are outside its scope. The act of melunko@47: running the Program is not restricted, and the output from the Program melunko@47: is covered only if its contents constitute a work based on the melunko@47: Program (independent of having been made by running the Program). melunko@47: Whether that is true depends on what the Program does. melunko@47: melunko@47: 1. You may copy and distribute verbatim copies of the Program's melunko@47: source code as you receive it, in any medium, provided that you melunko@47: conspicuously and appropriately publish on each copy an appropriate melunko@47: copyright notice and disclaimer of warranty; keep intact all the melunko@47: notices that refer to this License and to the absence of any warranty; melunko@47: and give any other recipients of the Program a copy of this License melunko@47: along with the Program. melunko@47: melunko@47: You may charge a fee for the physical act of transferring a copy, and melunko@47: you may at your option offer warranty protection in exchange for a fee. melunko@47: melunko@47: 2. You may modify your copy or copies of the Program or any portion melunko@47: of it, thus forming a work based on the Program, and copy and melunko@47: distribute such modifications or work under the terms of Section 1 melunko@47: above, provided that you also meet all of these conditions: melunko@47: melunko@47: a) You must cause the modified files to carry prominent notices melunko@47: stating that you changed the files and the date of any change. melunko@47: melunko@47: b) You must cause any work that you distribute or publish, that in melunko@47: whole or in part contains or is derived from the Program or any melunko@47: part thereof, to be licensed as a whole at no charge to all third melunko@47: parties under the terms of this License. melunko@47: melunko@47: c) If the modified program normally reads commands interactively melunko@47: when run, you must cause it, when started running for such melunko@47: interactive use in the most ordinary way, to print or display an melunko@47: announcement including an appropriate copyright notice and a melunko@47: notice that there is no warranty (or else, saying that you provide melunko@47: a warranty) and that users may redistribute the program under melunko@47: these conditions, and telling the user how to view a copy of this melunko@47: License. (Exception: if the Program itself is interactive but melunko@47: does not normally print such an announcement, your work based on melunko@47: the Program is not required to print an announcement.) melunko@47: melunko@47: These requirements apply to the modified work as a whole. If melunko@47: identifiable sections of that work are not derived from the Program, melunko@47: and can be reasonably considered independent and separate works in melunko@47: themselves, then this License, and its terms, do not apply to those melunko@47: sections when you distribute them as separate works. But when you melunko@47: distribute the same sections as part of a whole which is a work based melunko@47: on the Program, the distribution of the whole must be on the terms of melunko@47: this License, whose permissions for other licensees extend to the melunko@47: entire whole, and thus to each and every part regardless of who wrote it. melunko@47: melunko@47: Thus, it is not the intent of this section to claim rights or contest melunko@47: your rights to work written entirely by you; rather, the intent is to melunko@47: exercise the right to control the distribution of derivative or melunko@47: collective works based on the Program. melunko@47: melunko@47: In addition, mere aggregation of another work not based on the Program melunko@47: with the Program (or with a work based on the Program) on a volume of melunko@47: a storage or distribution medium does not bring the other work under melunko@47: the scope of this License. melunko@47: melunko@47: 3. You may copy and distribute the Program (or a work based on it, melunko@47: under Section 2) in object code or executable form under the terms of melunko@47: Sections 1 and 2 above provided that you also do one of the following: melunko@47: melunko@47: a) Accompany it with the complete corresponding machine-readable melunko@47: source code, which must be distributed under the terms of Sections melunko@47: 1 and 2 above on a medium customarily used for software interchange; or, melunko@47: melunko@47: b) Accompany it with a written offer, valid for at least three melunko@47: years, to give any third party, for a charge no more than your melunko@47: cost of physically performing source distribution, a complete melunko@47: machine-readable copy of the corresponding source code, to be melunko@47: distributed under the terms of Sections 1 and 2 above on a medium melunko@47: customarily used for software interchange; or, melunko@47: melunko@47: c) Accompany it with the information you received as to the offer melunko@47: to distribute corresponding source code. (This alternative is melunko@47: allowed only for noncommercial distribution and only if you melunko@47: received the program in object code or executable form with such melunko@47: an offer, in accord with Subsection b above.) melunko@47: melunko@47: The source code for a work means the preferred form of the work for melunko@47: making modifications to it. For an executable work, complete source melunko@47: code means all the source code for all modules it contains, plus any melunko@47: associated interface definition files, plus the scripts used to melunko@47: control compilation and installation of the executable. However, as a melunko@47: special exception, the source code distributed need not include melunko@47: anything that is normally distributed (in either source or binary melunko@47: form) with the major components (compiler, kernel, and so on) of the melunko@47: operating system on which the executable runs, unless that component melunko@47: itself accompanies the executable. melunko@47: melunko@47: If distribution of executable or object code is made by offering melunko@47: access to copy from a designated place, then offering equivalent melunko@47: access to copy the source code from the same place counts as melunko@47: distribution of the source code, even though third parties are not melunko@47: compelled to copy the source along with the object code. melunko@47: melunko@47: 4. You may not copy, modify, sublicense, or distribute the Program melunko@47: except as expressly provided under this License. Any attempt melunko@47: otherwise to copy, modify, sublicense or distribute the Program is melunko@47: void, and will automatically terminate your rights under this License. melunko@47: However, parties who have received copies, or rights, from you under melunko@47: this License will not have their licenses terminated so long as such melunko@47: parties remain in full compliance. melunko@47: melunko@47: 5. You are not required to accept this License, since you have not melunko@47: signed it. However, nothing else grants you permission to modify or melunko@47: distribute the Program or its derivative works. These actions are melunko@47: prohibited by law if you do not accept this License. Therefore, by melunko@47: modifying or distributing the Program (or any work based on the melunko@47: Program), you indicate your acceptance of this License to do so, and melunko@47: all its terms and conditions for copying, distributing or modifying melunko@47: the Program or works based on it. melunko@47: melunko@47: 6. Each time you redistribute the Program (or any work based on the melunko@47: Program), the recipient automatically receives a license from the melunko@47: original licensor to copy, distribute or modify the Program subject to melunko@47: these terms and conditions. You may not impose any further melunko@47: restrictions on the recipients' exercise of the rights granted herein. melunko@47: You are not responsible for enforcing compliance by third parties to melunko@47: this License. melunko@47: melunko@47: 7. If, as a consequence of a court judgment or allegation of patent melunko@47: infringement or for any other reason (not limited to patent issues), melunko@47: conditions are imposed on you (whether by court order, agreement or melunko@47: otherwise) that contradict the conditions of this License, they do not melunko@47: excuse you from the conditions of this License. If you cannot melunko@47: distribute so as to satisfy simultaneously your obligations under this melunko@47: License and any other pertinent obligations, then as a consequence you melunko@47: may not distribute the Program at all. For example, if a patent melunko@47: license would not permit royalty-free redistribution of the Program by melunko@47: all those who receive copies directly or indirectly through you, then melunko@47: the only way you could satisfy both it and this License would be to melunko@47: refrain entirely from distribution of the Program. melunko@47: melunko@47: If any portion of this section is held invalid or unenforceable under melunko@47: any particular circumstance, the balance of the section is intended to melunko@47: apply and the section as a whole is intended to apply in other melunko@47: circumstances. melunko@47: melunko@47: It is not the purpose of this section to induce you to infringe any melunko@47: patents or other property right claims or to contest validity of any melunko@47: such claims; this section has the sole purpose of protecting the melunko@47: integrity of the free software distribution system, which is melunko@47: implemented by public license practices. Many people have made melunko@47: generous contributions to the wide range of software distributed melunko@47: through that system in reliance on consistent application of that melunko@47: system; it is up to the author/donor to decide if he or she is willing melunko@47: to distribute software through any other system and a licensee cannot melunko@47: impose that choice. melunko@47: melunko@47: This section is intended to make thoroughly clear what is believed to melunko@47: be a consequence of the rest of this License. melunko@47: melunko@47: 8. If the distribution and/or use of the Program is restricted in melunko@47: certain countries either by patents or by copyrighted interfaces, the melunko@47: original copyright holder who places the Program under this License melunko@47: may add an explicit geographical distribution limitation excluding melunko@47: those countries, so that distribution is permitted only in or among melunko@47: countries not thus excluded. In such case, this License incorporates melunko@47: the limitation as if written in the body of this License. melunko@47: melunko@47: 9. The Free Software Foundation may publish revised and/or new versions melunko@47: of the General Public License from time to time. Such new versions will melunko@47: be similar in spirit to the present version, but may differ in detail to melunko@47: address new problems or concerns. melunko@47: melunko@47: Each version is given a distinguishing version number. If the Program melunko@47: specifies a version number of this License which applies to it and "any melunko@47: later version", you have the option of following the terms and conditions melunko@47: either of that version or of any later version published by the Free melunko@47: Software Foundation. If the Program does not specify a version number of melunko@47: this License, you may choose any version ever published by the Free Software melunko@47: Foundation. melunko@47: melunko@47: 10. If you wish to incorporate parts of the Program into other free melunko@47: programs whose distribution conditions are different, write to the author melunko@47: to ask for permission. For software which is copyrighted by the Free melunko@47: Software Foundation, write to the Free Software Foundation; we sometimes melunko@47: make exceptions for this. Our decision will be guided by the two goals melunko@47: of preserving the free status of all derivatives of our free software and melunko@47: of promoting the sharing and reuse of software generally. melunko@47: melunko@47: NO WARRANTY melunko@47: melunko@47: 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY melunko@47: FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN melunko@47: OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES melunko@47: PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED melunko@47: OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF melunko@47: MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS melunko@47: TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE melunko@47: PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, melunko@47: REPAIR OR CORRECTION. melunko@47: melunko@47: 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING melunko@47: WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR melunko@47: REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, melunko@47: INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING melunko@47: OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED melunko@47: TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY melunko@47: YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER melunko@47: PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE melunko@47: POSSIBILITY OF SUCH DAMAGES. melunko@47: melunko@47: END OF TERMS AND CONDITIONS melunko@47: melunko@47: How to Apply These Terms to Your New Programs melunko@47: melunko@47: If you develop a new program, and you want it to be of the greatest melunko@47: possible use to the public, the best way to achieve this is to make it melunko@47: free software which everyone can redistribute and change under these terms. melunko@47: melunko@47: To do so, attach the following notices to the program. It is safest melunko@47: to attach them to the start of each source file to most effectively melunko@47: convey the exclusion of warranty; and each file should have at least melunko@47: the "copyright" line and a pointer to where the full notice is found. melunko@47: melunko@47: melunko@47: Copyright (C) melunko@47: melunko@47: This program is free software; you can redistribute it and/or modify melunko@47: it under the terms of the GNU General Public License as published by melunko@47: the Free Software Foundation; either version 2 of the License, or melunko@47: (at your option) any later version. melunko@47: melunko@47: This program is distributed in the hope that it will be useful, melunko@47: but WITHOUT ANY WARRANTY; without even the implied warranty of melunko@47: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the melunko@47: GNU General Public License for more details. melunko@47: melunko@47: You should have received a copy of the GNU General Public License melunko@47: along with this program; if not, write to the Free Software melunko@47: Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA melunko@47: melunko@47: melunko@47: Also add information on how to contact you by electronic and paper mail. melunko@47: melunko@47: If the program is interactive, make it output a short notice like this melunko@47: when it starts in an interactive mode: melunko@47: melunko@47: Gnomovision version 69, Copyright (C) year name of author melunko@47: Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. melunko@47: This is free software, and you are welcome to redistribute it melunko@47: under certain conditions; type `show c' for details. melunko@47: melunko@47: The hypothetical commands `show w' and `show c' should show the appropriate melunko@47: parts of the General Public License. Of course, the commands you use may melunko@47: be called something other than `show w' and `show c'; they could even be melunko@47: mouse-clicks or menu items--whatever suits your program. melunko@47: melunko@47: You should also get your employer (if you work as a programmer) or your melunko@47: school, if any, to sign a "copyright disclaimer" for the program, if melunko@47: necessary. Here is a sample; alter the names: melunko@47: melunko@47: Yoyodyne, Inc., hereby disclaims all copyright interest in the program melunko@47: `Gnomovision' (which makes passes at compilers) written by James Hacker. melunko@47: melunko@47: , 1 April 1989 melunko@47: Ty Coon, President of Vice melunko@47: melunko@47: This General Public License does not permit incorporating your program into melunko@47: proprietary programs. If your program is a subroutine library, you may melunko@47: consider it more useful to permit linking proprietary applications with the melunko@47: library. If this is what you want to do, use the GNU Library General melunko@47: Public License instead of this License.