| 1 | frodo | 2 | GNU GENERAL PUBLIC LICENSE | 
| 2 |  |  | Version 2, June 1991 | 
| 3 |  |  |  | 
| 4 |  |  | Copyright (C) 1989, 1991 Free Software Foundation, Inc. | 
| 5 |  |  | 675 Mass Ave, Cambridge, MA 02139, 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 Library 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 |  |  | Appendix: 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) 19yy  <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 | 
| 307 |  |  | along with this program; if not, write to the Free Software | 
| 308 |  |  | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, 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) 19yy 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 Library General | 
| 339 |  |  | Public License instead of this License. |