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| 1 | | − GNU GENERAL PUBLIC LICENSE |
| 2 | | − Version 2, June 1991 |
| 3 | | − |
| 4 | | − Copyright (C) 1989, 1991 Free Software Foundation, Inc., |
| 5 | | − 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 6 | | − Everyone is permitted to copy and distribute verbatim copies |
| 7 | | − of this license document, but changing it is not allowed. |
| 8 | | − |
| 9 | | − Preamble |
| 10 | | − |
| 11 | | − The licenses for most software are designed to take away your |
| 12 | | −freedom to share and change it. By contrast, the GNU General Public |
| 13 | | −License is intended to guarantee your freedom to share and change free |
| 14 | | −software--to make sure the software is free for all its users. This |
| 15 | | −General Public License applies to most of the Free Software |
| 16 | | −Foundation's software and to any other program whose authors commit to |
| 17 | | −using it. (Some other Free Software Foundation software is covered by |
| 18 | | −the GNU Lesser General Public License instead.) You can apply it to |
| 19 | | −your programs, too. |
| 20 | | − |
| 21 | | − When we speak of free software, we are referring to freedom, not |
| 22 | | −price. Our General Public Licenses are designed to make sure that you |
| 23 | | −have the freedom to distribute copies of free software (and charge for |
| 24 | | −this service if you wish), that you receive source code or can get it |
| 25 | | −if you want it, that you can change the software or use pieces of it |
| 26 | | −in new free programs; and that you know you can do these things. |
| 27 | | − |
| 28 | | − To protect your rights, we need to make restrictions that forbid |
| 29 | | −anyone to deny you these rights or to ask you to surrender the rights. |
| 30 | | −These restrictions translate to certain responsibilities for you if you |
| 31 | | −distribute copies of the software, or if you modify it. |
| 32 | | − |
| 33 | | − For example, if you distribute copies of such a program, whether |
| 34 | | −gratis or for a fee, you must give the recipients all the rights that |
| 35 | | −you have. You must make sure that they, too, receive or can get the |
| 36 | | −source code. And you must show them these terms so they know their |
| 37 | | −rights. |
| 38 | | − |
| 39 | | − We protect your rights with two steps: (1) copyright the software, and |
| 40 | | −(2) offer you this license which gives you legal permission to copy, |
| 41 | | −distribute and/or modify the software. |
| 42 | | − |
| 43 | | − Also, for each author's protection and ours, we want to make certain |
| 44 | | −that everyone understands that there is no warranty for this free |
| 45 | | −software. If the software is modified by someone else and passed on, we |
| 46 | | −want its recipients to know that what they have is not the original, so |
| 47 | | −that any problems introduced by others will not reflect on the original |
| 48 | | −authors' reputations. |
| 49 | | − |
| 50 | | − Finally, any free program is threatened constantly by software |
| 51 | | −patents. We wish to avoid the danger that redistributors of a free |
| 52 | | −program will individually obtain patent licenses, in effect making the |
| 53 | | −program proprietary. To prevent this, we have made it clear that any |
| 54 | | −patent must be licensed for everyone's free use or not licensed at all. |
| 55 | | − |
| 56 | | − The precise terms and conditions for copying, distribution and |
| 57 | | −modification follow. |
| 58 | | − |
| 59 | | − GNU GENERAL PUBLIC LICENSE |
| 60 | | − TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION |
| 61 | | − |
| 62 | | − 0. This License applies to any program or other work which contains |
| 63 | | −a notice placed by the copyright holder saying it may be distributed |
| 64 | | −under the terms of this General Public License. The "Program", below, |
| 65 | | −refers to any such program or work, and a "work based on the Program" |
| 66 | | −means either the Program or any derivative work under copyright law: |
| 67 | | −that is to say, a work containing the Program or a portion of it, |
| 68 | | −either verbatim or with modifications and/or translated into another |
| 69 | | −language. (Hereinafter, translation is included without limitation in |
| 70 | | −the term "modification".) Each licensee is addressed as "you". |
| 71 | | − |
| 72 | | −Activities other than copying, distribution and modification are not |
| 73 | | −covered by this License; they are outside its scope. The act of |
| 74 | | −running the Program is not restricted, and the output from the Program |
| 75 | | −is covered only if its contents constitute a work based on the |
| 76 | | −Program (independent of having been made by running the Program). |
| 77 | | −Whether that is true depends on what the Program does. |
| 78 | | − |
| 79 | | − 1. You may copy and distribute verbatim copies of the Program's |
| 80 | | −source code as you receive it, in any medium, provided that you |
| 81 | | −conspicuously and appropriately publish on each copy an appropriate |
| 82 | | −copyright notice and disclaimer of warranty; keep intact all the |
| 83 | | −notices that refer to this License and to the absence of any warranty; |
| 84 | | −and give any other recipients of the Program a copy of this License |
| 85 | | −along with the Program. |
| 86 | | − |
| 87 | | −You may charge a fee for the physical act of transferring a copy, and |
| 88 | | −you may at your option offer warranty protection in exchange for a fee. |
| 89 | | − |
| 90 | | − 2. You may modify your copy or copies of the Program or any portion |
| 91 | | −of it, thus forming a work based on the Program, and copy and |
| 92 | | −distribute such modifications or work under the terms of Section 1 |
| 93 | | −above, provided that you also meet all of these conditions: |
| 94 | | − |
| 95 | | − a) You must cause the modified files to carry prominent notices |
| 96 | | − stating that you changed the files and the date of any change. |
| 97 | | − |
| 98 | | − b) You must cause any work that you distribute or publish, that in |
| 99 | | − whole or in part contains or is derived from the Program or any |
| 100 | | − part thereof, to be licensed as a whole at no charge to all third |
| 101 | | − parties under the terms of this License. |
| 102 | | − |
| 103 | | − c) If the modified program normally reads commands interactively |
| 104 | | − when run, you must cause it, when started running for such |
| 105 | | − interactive use in the most ordinary way, to print or display an |
| 106 | | − announcement including an appropriate copyright notice and a |
| 107 | | − notice that there is no warranty (or else, saying that you provide |
| 108 | | − a warranty) and that users may redistribute the program under |
| 109 | | − these conditions, and telling the user how to view a copy of this |
| 110 | | − License. (Exception: if the Program itself is interactive but |
| 111 | | − does not normally print such an announcement, your work based on |
| 112 | | − the Program is not required to print an announcement.) |
| 113 | | − |
| 114 | | −These requirements apply to the modified work as a whole. If |
| 115 | | −identifiable sections of that work are not derived from the Program, |
| 116 | | −and can be reasonably considered independent and separate works in |
| 117 | | −themselves, then this License, and its terms, do not apply to those |
| 118 | | −sections when you distribute them as separate works. But when you |
| 119 | | −distribute the same sections as part of a whole which is a work based |
| 120 | | −on the Program, the distribution of the whole must be on the terms of |
| 121 | | −this License, whose permissions for other licensees extend to the |
| 122 | | −entire whole, and thus to each and every part regardless of who wrote it. |
| 123 | | − |
| 124 | | −Thus, it is not the intent of this section to claim rights or contest |
| 125 | | −your rights to work written entirely by you; rather, the intent is to |
| 126 | | −exercise the right to control the distribution of derivative or |
| 127 | | −collective works based on the Program. |
| 128 | | − |
| 129 | | −In addition, mere aggregation of another work not based on the Program |
| 130 | | −with the Program (or with a work based on the Program) on a volume of |
| 131 | | −a storage or distribution medium does not bring the other work under |
| 132 | | −the scope of this License. |
| 133 | | − |
| 134 | | − 3. You may copy and distribute the Program (or a work based on it, |
| 135 | | −under Section 2) in object code or executable form under the terms of |
| 136 | | −Sections 1 and 2 above provided that you also do one of the following: |
| 137 | | − |
| 138 | | − a) Accompany it with the complete corresponding machine-readable |
| 139 | | − source code, which must be distributed under the terms of Sections |
| 140 | | − 1 and 2 above on a medium customarily used for software interchange; or, |
| 141 | | − |
| 142 | | − b) Accompany it with a written offer, valid for at least three |
| 143 | | − years, to give any third party, for a charge no more than your |
| 144 | | − cost of physically performing source distribution, a complete |
| 145 | | − machine-readable copy of the corresponding source code, to be |
| 146 | | − distributed under the terms of Sections 1 and 2 above on a medium |
| 147 | | − customarily used for software interchange; or, |
| 148 | | − |
| 149 | | − c) Accompany it with the information you received as to the offer |
| 150 | | − to distribute corresponding source code. (This alternative is |
| 151 | | − allowed only for noncommercial distribution and only if you |
| 152 | | − received the program in object code or executable form with such |
| 153 | | − an offer, in accord with Subsection b above.) |
| 154 | | − |
| 155 | | −The source code for a work means the preferred form of the work for |
| 156 | | −making modifications to it. For an executable work, complete source |
| 157 | | −code means all the source code for all modules it contains, plus any |
| 158 | | −associated interface definition files, plus the scripts used to |
| 159 | | −control compilation and installation of the executable. However, as a |
| 160 | | −special exception, the source code distributed need not include |
| 161 | | −anything that is normally distributed (in either source or binary |
| 162 | | −form) with the major components (compiler, kernel, and so on) of the |
| 163 | | −operating system on which the executable runs, unless that component |
| 164 | | −itself accompanies the executable. |
| 165 | | − |
| 166 | | −If distribution of executable or object code is made by offering |
| 167 | | −access to copy from a designated place, then offering equivalent |
| 168 | | −access to copy the source code from the same place counts as |
| 169 | | −distribution of the source code, even though third parties are not |
| 170 | | −compelled to copy the source along with the object code. |
| 171 | | − |
| 172 | | − 4. You may not copy, modify, sublicense, or distribute the Program |
| 173 | | −except as expressly provided under this License. Any attempt |
| 174 | | −otherwise to copy, modify, sublicense or distribute the Program is |
| 175 | | −void, and will automatically terminate your rights under this License. |
| 176 | | −However, parties who have received copies, or rights, from you under |
| 177 | | −this License will not have their licenses terminated so long as such |
| 178 | | −parties remain in full compliance. |
| 179 | | − |
| 180 | | − 5. You are not required to accept this License, since you have not |
| 181 | | −signed it. However, nothing else grants you permission to modify or |
| 182 | | −distribute the Program or its derivative works. These actions are |
| 183 | | −prohibited by law if you do not accept this License. Therefore, by |
| 184 | | −modifying or distributing the Program (or any work based on the |
| 185 | | −Program), you indicate your acceptance of this License to do so, and |
| 186 | | −all its terms and conditions for copying, distributing or modifying |
| 187 | | −the Program or works based on it. |
| 188 | | − |
| 189 | | − 6. Each time you redistribute the Program (or any work based on the |
| 190 | | −Program), the recipient automatically receives a license from the |
| 191 | | −original licensor to copy, distribute or modify the Program subject to |
| 192 | | −these terms and conditions. You may not impose any further |
| 193 | | −restrictions on the recipients' exercise of the rights granted herein. |
| 194 | | −You are not responsible for enforcing compliance by third parties to |
| 195 | | −this License. |
| 196 | | − |
| 197 | | − 7. If, as a consequence of a court judgment or allegation of patent |
| 198 | | −infringement or for any other reason (not limited to patent issues), |
| 199 | | −conditions are imposed on you (whether by court order, agreement or |
| 200 | | −otherwise) that contradict the conditions of this License, they do not |
| 201 | | −excuse you from the conditions of this License. If you cannot |
| 202 | | −distribute so as to satisfy simultaneously your obligations under this |
| 203 | | −License and any other pertinent obligations, then as a consequence you |
| 204 | | −may not distribute the Program at all. For example, if a patent |
| 205 | | −license would not permit royalty-free redistribution of the Program by |
| 206 | | −all those who receive copies directly or indirectly through you, then |
| 207 | | −the only way you could satisfy both it and this License would be to |
| 208 | | −refrain entirely from distribution of the Program. |
| 209 | | − |
| 210 | | −If any portion of this section is held invalid or unenforceable under |
| 211 | | −any particular circumstance, the balance of the section is intended to |
| 212 | | −apply and the section as a whole is intended to apply in other |
| 213 | | −circumstances. |
| 214 | | − |
| 215 | | −It is not the purpose of this section to induce you to infringe any |
| 216 | | −patents or other property right claims or to contest validity of any |
| 217 | | −such claims; this section has the sole purpose of protecting the |
| 218 | | −integrity of the free software distribution system, which is |
| 219 | | −implemented by public license practices. Many people have made |
| 220 | | −generous contributions to the wide range of software distributed |
| 221 | | −through that system in reliance on consistent application of that |
| 222 | | −system; it is up to the author/donor to decide if he or she is willing |
| 223 | | −to distribute software through any other system and a licensee cannot |
| 224 | | −impose that choice. |
| 225 | | − |
| 226 | | −This section is intended to make thoroughly clear what is believed to |
| 227 | | −be a consequence of the rest of this License. |
| 228 | | − |
| 229 | | − 8. If the distribution and/or use of the Program is restricted in |
| 230 | | −certain countries either by patents or by copyrighted interfaces, the |
| 231 | | −original copyright holder who places the Program under this License |
| 232 | | −may add an explicit geographical distribution limitation excluding |
| 233 | | −those countries, so that distribution is permitted only in or among |
| 234 | | −countries not thus excluded. In such case, this License incorporates |
| 235 | | −the limitation as if written in the body of this License. |
| 236 | | − |
| 237 | | − 9. The Free Software Foundation may publish revised and/or new versions |
| 238 | | −of the General Public License from time to time. Such new versions will |
| 239 | | −be similar in spirit to the present version, but may differ in detail to |
| 240 | | −address new problems or concerns. |
| 241 | | − |
| 242 | | −Each version is given a distinguishing version number. If the Program |
| 243 | | −specifies a version number of this License which applies to it and "any |
| 244 | | −later version", you have the option of following the terms and conditions |
| 245 | | −either of that version or of any later version published by the Free |
| 246 | | −Software Foundation. If the Program does not specify a version number of |
| 247 | | −this License, you may choose any version ever published by the Free Software |
| 248 | | −Foundation. |
| 249 | | − |
| 250 | | − 10. If you wish to incorporate parts of the Program into other free |
| 251 | | −programs whose distribution conditions are different, write to the author |
| 252 | | −to ask for permission. For software which is copyrighted by the Free |
| 253 | | −Software Foundation, write to the Free Software Foundation; we sometimes |
| 254 | | −make exceptions for this. Our decision will be guided by the two goals |
| 255 | | −of preserving the free status of all derivatives of our free software and |
| 256 | | −of promoting the sharing and reuse of software generally. |
| 257 | | − |
| 258 | | − NO WARRANTY |
| 259 | | − |
| 260 | | − 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY |
| 261 | | −FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN |
| 262 | | −OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES |
| 263 | | −PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED |
| 264 | | −OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 265 | | −MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS |
| 266 | | −TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE |
| 267 | | −PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, |
| 268 | | −REPAIR OR CORRECTION. |
| 269 | | − |
| 270 | | − 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING |
| 271 | | −WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR |
| 272 | | −REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, |
| 273 | | −INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING |
| 274 | | −OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED |
| 275 | | −TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY |
| 276 | | −YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER |
| 277 | | −PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE |
| 278 | | −POSSIBILITY OF SUCH DAMAGES. |
| 279 | | − |
| 280 | | − END OF TERMS AND CONDITIONS |
| 281 | | − |
| 282 | | − How to Apply These Terms to Your New Programs |
| 283 | | − |
| 284 | | − If you develop a new program, and you want it to be of the greatest |
| 285 | | −possible use to the public, the best way to achieve this is to make it |
| 286 | | −free software which everyone can redistribute and change under these terms. |
| 287 | | − |
| 288 | | − To do so, attach the following notices to the program. It is safest |
| 289 | | −to attach them to the start of each source file to most effectively |
| 290 | | −convey the exclusion of warranty; and each file should have at least |
| 291 | | −the "copyright" line and a pointer to where the full notice is found. |
| 292 | | − |
| 293 | | − <one line to give the program's name and a brief idea of what it does.> |
| 294 | | − Copyright (C) <year> <name of author> |
| 295 | | − |
| 296 | | − This program is free software; you can redistribute it and/or modify |
| 297 | | − it under the terms of the GNU General Public License as published by |
| 298 | | − the Free Software Foundation; either version 2 of the License, or |
| 299 | | − (at your option) any later version. |
| 300 | | − |
| 301 | | − This program is distributed in the hope that it will be useful, |
| 302 | | − but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 303 | | − MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 304 | | − GNU General Public License for more details. |
| 305 | | − |
| 306 | | − You should have received a copy of the GNU General Public License along |
| 307 | | − with this program; if not, write to the Free Software Foundation, Inc., |
| 308 | | − 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 309 | | − |
| 310 | | −Also add information on how to contact you by electronic and paper mail. |
| 311 | | − |
| 312 | | −If the program is interactive, make it output a short notice like this |
| 313 | | −when it starts in an interactive mode: |
| 314 | | − |
| 315 | | − Gnomovision version 69, Copyright (C) year name of author |
| 316 | | − Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. |
| 317 | | − This is free software, and you are welcome to redistribute it |
| 318 | | − under certain conditions; type `show c' for details. |
| 319 | | − |
| 320 | | −The hypothetical commands `show w' and `show c' should show the appropriate |
| 321 | | −parts of the General Public License. Of course, the commands you use may |
| 322 | | −be called something other than `show w' and `show c'; they could even be |
| 323 | | −mouse-clicks or menu items--whatever suits your program. |
| 324 | | − |
| 325 | | −You should also get your employer (if you work as a programmer) or your |
| 326 | | −school, if any, to sign a "copyright disclaimer" for the program, if |
| 327 | | −necessary. Here is a sample; alter the names: |
| 328 | | − |
| 329 | | − Yoyodyne, Inc., hereby disclaims all copyright interest in the program |
| 330 | | − `Gnomovision' (which makes passes at compilers) written by James Hacker. |
| 331 | | − |
| 332 | | − <signature of Ty Coon>, 1 April 1989 |
| 333 | | − Ty Coon, President of Vice |
| 334 | | − |
| 335 | | −This General Public License does not permit incorporating your program into |
| 336 | | −proprietary programs. If your program is a subroutine library, you may |
| 337 | | −consider it more useful to permit linking proprietary applications with the |
| 338 | | −library. If this is what you want to do, use the GNU Lesser General |
| 339 | | −Public License instead of this License. |