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