| GNU GENERAL PUBLIC LICENSE |
| Version 1, February 1989 |
| |
| Copyright (C) 1989 Free Software Foundation, Inc. |
| 675 Mass Ave, Cambridge, MA 02139, USA |
| Everyone is permitted to copy and distribute verbatim copies |
| of this license document, but changing it is not allowed. |
| |
| Preamble |
| |
| The license agreements of most software companies try to keep users |
| at the mercy of those companies. By contrast, our General Public |
| License is intended to guarantee your freedom to share and change free |
| software--to make sure the software is free for all its users. The |
| General Public License applies to the Free Software Foundation's |
| software and to any other program whose authors commit to using it. |
| You can use it for your programs, too. |
| |
| When we speak of free software, we are referring to freedom, not |
| price. Specifically, the General Public License is designed to make |
| sure that you have the freedom to give away or sell copies of free |
| software, that you receive source code or can get it if you want it, |
| that you can change the software or use pieces of it in new free |
| programs; and that you know you can do these things. |
| |
| To protect your rights, we need to make restrictions that forbid |
| anyone to deny you these rights or to ask you to surrender the rights. |
| These restrictions translate to certain responsibilities for you if you |
| distribute copies of the software, or if you modify it. |
| |
| For example, if you distribute copies of a such a program, whether |
| gratis or for a fee, you must give the recipients all the rights that |
| you have. You must make sure that they, too, receive or can get the |
| source code. And you must tell them their rights. |
| |
| We protect your rights with two steps: (1) copyright the software, and |
| (2) offer you this license which gives you legal permission to copy, |
| distribute and/or modify the software. |
| |
| Also, for each author's protection and ours, we want to make certain |
| that everyone understands that there is no warranty for this free |
| software. If the software is modified by someone else and passed on, we |
| want its recipients to know that what they have is not the original, so |
| that any problems introduced by others will not reflect on the original |
| authors' reputations. |
| |
| The precise terms and conditions for copying, distribution and |
| modification follow. |
| |
| GNU GENERAL PUBLIC LICENSE |
| TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION |
| |
| 0. This License Agreement applies to any program or other work which |
| contains a notice placed by the copyright holder saying it may be |
| distributed under the terms of this General Public License. The |
| "Program", below, refers to any such program or work, and a "work based |
| on the Program" means either the Program or any work containing the |
| Program or a portion of it, either verbatim or with modifications. Each |
| licensee is addressed as "you". |
| |
| 1. You may copy and distribute verbatim copies of the Program's source |
| code as you receive it, in any medium, provided that you conspicuously and |
| appropriately publish on each copy an appropriate copyright notice and |
| disclaimer of warranty; keep intact all the notices that refer to this |
| General Public License and to the absence of any warranty; and give any |
| other recipients of the Program a copy of this General Public License |
| along with the Program. You may charge a fee for the physical act of |
| transferring a copy. |
| |
| 2. You may modify your copy or copies of the Program or any portion of |
| it, and copy and distribute such modifications under the terms of Paragraph |
| 1 above, provided that you also do the following: |
| |
| a) cause the modified files to carry prominent notices stating that |
| you changed the files and the date of any change; and |
| |
| b) cause the whole of any work that you distribute or publish, that |
| in whole or in part contains the Program or any part thereof, either |
| with or without modifications, to be licensed at no charge to all |
| third parties under the terms of this General Public License (except |
| that you may choose to grant warranty protection to some or all |
| third parties, at your option). |
| |
| c) If the modified program normally reads commands interactively when |
| run, you must cause it, when started running for such interactive use |
| in the simplest and most usual way, to print or display an |
| announcement including an appropriate copyright notice and a notice |
| that there is no warranty (or else, saying that you provide a |
| warranty) and that users may redistribute the program under these |
| conditions, and telling the user how to view a copy of this General |
| Public License. |
| |
| d) You may charge a fee for the physical act of transferring a |
| copy, and you may at your option offer warranty protection in |
| exchange for a fee. |
| |
| Mere aggregation of another independent work with the Program (or its |
| derivative) on a volume of a storage or distribution medium does not bring |
| the other work under the scope of these terms. |
| |
| 3. You may copy and distribute the Program (or a portion or derivative of |
| it, under Paragraph 2) in object code or executable form under the terms of |
| Paragraphs 1 and 2 above provided that you also do one of the following: |
| |
| a) accompany it with the complete corresponding machine-readable |
| source code, which must be distributed under the terms of |
| Paragraphs 1 and 2 above; or, |
| |
| b) accompany it with a written offer, valid for at least three |
| years, to give any third party free (except for a nominal charge |
| for the cost of distribution) a complete machine-readable copy of the |
| corresponding source code, to be distributed under the terms of |
| Paragraphs 1 and 2 above; or, |
| |
| c) accompany it with the information you received as to where the |
| corresponding source code may be obtained. (This alternative is |
| allowed only for noncommercial distribution and only if you |
| received the program in object code or executable form alone.) |
| |
| Source code for a work means the preferred form of the work for making |
| modifications to it. For an executable file, complete source code means |
| all the source code for all modules it contains; but, as a special |
| exception, it need not include source code for modules which are standard |
| libraries that accompany the operating system on which the executable |
| file runs, or for standard header files or definitions files that |
| accompany that operating system. |
| |
| 4. You may not copy, modify, sublicense, distribute or transfer the |
| Program except as expressly provided under this General Public License. |
| Any attempt otherwise to copy, modify, sublicense, distribute or transfer |
| the Program is void, and will automatically terminate your rights to use |
| the Program under this License. However, parties who have received |
| copies, or rights to use copies, from you under this General Public |
| License will not have their licenses terminated so long as such parties |
| remain in full compliance. |
| |
| 5. By copying, distributing or modifying the Program (or any work based |
| on the Program) you indicate your acceptance of this license to do so, |
| and all its terms and conditions. |
| |
| 6. Each time you redistribute the Program (or any work based on the |
| Program), the recipient automatically receives a license from the original |
| licensor to copy, distribute or modify the Program subject to these |
| terms and conditions. You may not impose any further restrictions on the |
| recipients' exercise of the rights granted herein. |
| |
| 7. The Free Software Foundation may publish revised and/or new versions |
| of the General Public License from time to time. Such new versions will |
| be similar in spirit to the present version, but may differ in detail to |
| address new problems or concerns. |
| |
| Each version is given a distinguishing version number. If the Program |
| specifies a version number of the license which applies to it and "any |
| later version", you have the option of following the terms and conditions |
| either of that version or of any later version published by the Free |
| Software Foundation. If the Program does not specify a version number of |
| the license, you may choose any version ever published by the Free Software |
| Foundation. |
| |
| 8. If you wish to incorporate parts of the Program into other free |
| programs whose distribution conditions are different, write to the author |
| to ask for permission. For software which is copyrighted by the Free |
| Software Foundation, write to the Free Software Foundation; we sometimes |
| make exceptions for this. Our decision will be guided by the two goals |
| of preserving the free status of all derivatives of our free software and |
| of promoting the sharing and reuse of software generally. |
| |
| NO WARRANTY |
| |
| 9. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY |
| FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN |
| OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES |
| PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED |
| OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS |
| TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE |
| PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, |
| REPAIR OR CORRECTION. |
| |
| 10. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING |
| WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR |
| REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, |
| INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING |
| OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED |
| TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY |
| YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER |
| PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE |
| POSSIBILITY OF SUCH DAMAGES. |
| |
| END OF TERMS AND CONDITIONS |
| |
| Appendix: How to Apply These Terms to Your New Programs |
| |
| If you develop a new program, and you want it to be of the greatest |
| possible use to humanity, the best way to achieve this is to make it |
| free software which everyone can redistribute and change under these |
| terms. |
| |
| To do so, attach the following notices to the program. It is safest to |
| attach them to the start of each source file to most effectively convey |
| the exclusion of warranty; and each file should have at least the |
| "copyright" line and a pointer to where the full notice is found. |
| |
| <one line to give the program's name and a brief idea of what it does.> |
| Copyright (C) 19yy <name of author> |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 1, or (at your option) |
| any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| |
| Also add information on how to contact you by electronic and paper mail. |
| |
| If the program is interactive, make it output a short notice like this |
| when it starts in an interactive mode: |
| |
| Gnomovision version 69, Copyright (C) 19xx name of author |
| Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. |
| This is free software, and you are welcome to redistribute it |
| under certain conditions; type `show c' for details. |
| |
| The hypothetical commands `show w' and `show c' should show the |
| appropriate parts of the General Public License. Of course, the |
| commands you use may be called something other than `show w' and `show |
| c'; they could even be mouse-clicks or menu items--whatever suits your |
| program. |
| |
| You should also get your employer (if you work as a programmer) or your |
| school, if any, to sign a "copyright disclaimer" for the program, if |
| necessary. Here a sample; alter the names: |
| |
| Yoyodyne, Inc., hereby disclaims all copyright interest in the |
| program `Gnomovision' (a program to direct compilers to make passes |
| at assemblers) written by James Hacker. |
| |
| <signature of Ty Coon>, 1 April 1989 |
| Ty Coon, President of Vice |
| |
| That's all there is to it! |