1<!DOCTYPE html PUBLIC "-//IETF//DTD HTML 2.0//EN"> 2<HTML> 3<HEAD> 4<TITLE>GNU General Public License</TITLE> 5</HEAD> 6<BODY BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#1F00FF" ALINK="#FF0000" VLINK="#9900DD"> 7<H1>GNU General Public License</H1> 8<H2>Table of Contents</H2> 9<UL> 10 11 <LI><A NAME="TOC1" HREF="#SEC1">GNU GENERAL PUBLIC LICENSE</A> 12<UL> 13<LI><A NAME="TOC2" HREF="#SEC2">Preamble</A> 14<LI><A NAME="TOC3" HREF="#SEC3">TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION</A> 15 16</UL> 17</UL> 18 19<P> 20 21<HR> 22 23<P> 24 25 26 27<H2><A NAME="SEC1" HREF="#TOC1">GNU GENERAL PUBLIC LICENSE</A></H2> 28<P> 29Version 2, June 1991 30 31</P> 32 33<PRE> 34Copyright (C) 1989, 1991 Free Software Foundation, Inc. 3559 Temple Place - Suite 330, Boston, MA 02111-1307, USA 36 37Everyone is permitted to copy and distribute verbatim copies 38of this license document, but changing it is not allowed. 39</PRE> 40 41 42 43<H2><A NAME="SEC2" HREF="#TOC2">Preamble</A></H2> 44 45<P> 46 The licenses for most software are designed to take away your 47freedom to share and change it. By contrast, the GNU General Public 48License is intended to guarantee your freedom to share and change free 49software--to make sure the software is free for all its users. This 50General Public License applies to most of the Free Software 51Foundation's software and to any other program whose authors commit to 52using it. (Some other Free Software Foundation software is covered by 53the GNU Library General Public License instead.) You can apply it to 54your programs, too. 55 56</P> 57<P> 58 When we speak of free software, we are referring to freedom, not 59price. Our General Public Licenses are designed to make sure that you 60have the freedom to distribute copies of free software (and charge for 61this service if you wish), that you receive source code or can get it 62if you want it, that you can change the software or use pieces of it 63in new free programs; and that you know you can do these things. 64 65</P> 66<P> 67 To protect your rights, we need to make restrictions that forbid 68anyone to deny you these rights or to ask you to surrender the rights. 69These restrictions translate to certain responsibilities for you if you 70distribute copies of the software, or if you modify it. 71 72</P> 73<P> 74 For example, if you distribute copies of such a program, whether 75gratis or for a fee, you must give the recipients all the rights that 76you have. You must make sure that they, too, receive or can get the 77source code. And you must show them these terms so they know their 78rights. 79 80</P> 81<P> 82 We protect your rights with two steps: (1) copyright the software, and 83(2) offer you this license which gives you legal permission to copy, 84distribute and/or modify the software. 85 86</P> 87<P> 88 Also, for each author's protection and ours, we want to make certain 89that everyone understands that there is no warranty for this free 90software. If the software is modified by someone else and passed on, we 91want its recipients to know that what they have is not the original, so 92that any problems introduced by others will not reflect on the original 93authors' reputations. 94 95</P> 96<P> 97 Finally, any free program is threatened constantly by software 98patents. We wish to avoid the danger that redistributors of a free 99program will individually obtain patent licenses, in effect making the 100program proprietary. To prevent this, we have made it clear that any 101patent must be licensed for everyone's free use or not licensed at all. 102 103</P> 104<P> 105 The precise terms and conditions for copying, distribution and 106modification follow. 107 108</P> 109 110 111<H2><A NAME="SEC3" HREF="#TOC3">TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION</A></H2> 112 113 114<P> 115 116<STRONG>0.</STRONG> 117 This License applies to any program or other work which contains 118a notice placed by the copyright holder saying it may be distributed 119under the terms of this General Public License. The "Program", below, 120refers to any such program or work, and a "work based on the Program" 121means either the Program or any derivative work under copyright law: 122that is to say, a work containing the Program or a portion of it, 123either verbatim or with modifications and/or translated into another 124language. (Hereinafter, translation is included without limitation in 125the term "modification".) Each licensee is addressed as "you". 126<P> 127 128Activities other than copying, distribution and modification are not 129covered by this License; they are outside its scope. The act of 130running the Program is not restricted, and the output from the Program 131is covered only if its contents constitute a work based on the 132Program (independent of having been made by running the Program). 133Whether that is true depends on what the Program does. 134 135<P> 136 137<STRONG>1.</STRONG> 138 You may copy and distribute verbatim copies of the Program's 139source code as you receive it, in any medium, provided that you 140conspicuously and appropriately publish on each copy an appropriate 141copyright notice and disclaimer of warranty; keep intact all the 142notices that refer to this License and to the absence of any warranty; 143and give any other recipients of the Program a copy of this License 144along with the Program. 145<P> 146 147You may charge a fee for the physical act of transferring a copy, and 148you may at your option offer warranty protection in exchange for a fee. 149<P> 150 151<STRONG>2.</STRONG> 152 You may modify your copy or copies of the Program or any portion 153of it, thus forming a work based on the Program, and copy and 154distribute such modifications or work under the terms of Section 1 155above, provided that you also meet all of these conditions: 156<P> 157 158<UL> 159 160<LI><STRONG>a)</STRONG> 161 You must cause the modified files to carry prominent notices 162 stating that you changed the files and the date of any change. 163 164<P> 165<LI><STRONG>b)</STRONG> 166 You must cause any work that you distribute or publish, that in 167 whole or in part contains or is derived from the Program or any 168 part thereof, to be licensed as a whole at no charge to all third 169 parties under the terms of this License. 170 171<P> 172<LI><STRONG>c)</STRONG> 173 If the modified program normally reads commands interactively 174 when run, you must cause it, when started running for such 175 interactive use in the most ordinary way, to print or display an 176 announcement including an appropriate copyright notice and a 177 notice that there is no warranty (or else, saying that you provide 178 a warranty) and that users may redistribute the program under 179 these conditions, and telling the user how to view a copy of this 180 License. (Exception: if the Program itself is interactive but 181 does not normally print such an announcement, your work based on 182 the Program is not required to print an announcement.) 183</UL> 184 185These requirements apply to the modified work as a whole. If 186identifiable sections of that work are not derived from the Program, 187and can be reasonably considered independent and separate works in 188themselves, then this License, and its terms, do not apply to those 189sections when you distribute them as separate works. But when you 190distribute the same sections as part of a whole which is a work based 191on the Program, the distribution of the whole must be on the terms of 192this License, whose permissions for other licensees extend to the 193entire whole, and thus to each and every part regardless of who wrote it. 194<P> 195 196Thus, it is not the intent of this section to claim rights or contest 197your rights to work written entirely by you; rather, the intent is to 198exercise the right to control the distribution of derivative or 199collective works based on the Program. 200<P> 201 202In addition, mere aggregation of another work not based on the Program 203with the Program (or with a work based on the Program) on a volume of 204a storage or distribution medium does not bring the other work under 205the scope of this License. 206 207<P> 208 209<STRONG>3.</STRONG> 210 You may copy and distribute the Program (or a work based on it, 211under Section 2) in object code or executable form under the terms of 212Sections 1 and 2 above provided that you also do one of the following: 213 214 215<!-- we use this doubled UL to get the sub-sections indented, --> 216<!-- while making the bullets as unobvious as possible. --> 217<UL> 218 219<LI><STRONG>a)</STRONG> 220 Accompany it with the complete corresponding machine-readable 221 source code, which must be distributed under the terms of Sections 222 1 and 2 above on a medium customarily used for software interchange; or, 223 224<P> 225<LI><STRONG>b)</STRONG> 226 Accompany it with a written offer, valid for at least three 227 years, to give any third party, for a charge no more than your 228 cost of physically performing source distribution, a complete 229 machine-readable copy of the corresponding source code, to be 230 distributed under the terms of Sections 1 and 2 above on a medium 231 customarily used for software interchange; or, 232 233<P> 234<LI><STRONG>c)</STRONG> 235 Accompany it with the information you received as to the offer 236 to distribute corresponding source code. (This alternative is 237 allowed only for noncommercial distribution and only if you 238 received the program in object code or executable form with such 239 an offer, in accord with Subsection b above.) 240</UL> 241 242The source code for a work means the preferred form of the work for 243making modifications to it. For an executable work, complete source 244code means all the source code for all modules it contains, plus any 245associated interface definition files, plus the scripts used to 246control compilation and installation of the executable. However, as a 247special exception, the source code distributed need not include 248anything that is normally distributed (in either source or binary 249form) with the major components (compiler, kernel, and so on) of the 250operating system on which the executable runs, unless that component 251itself accompanies the executable. 252<P> 253 254If distribution of executable or object code is made by offering 255access to copy from a designated place, then offering equivalent 256access to copy the source code from the same place counts as 257distribution of the source code, even though third parties are not 258compelled to copy the source along with the object code. 259<P> 260 261<STRONG>4.</STRONG> 262 You may not copy, modify, sublicense, or distribute the Program 263except as expressly provided under this License. Any attempt 264otherwise to copy, modify, sublicense or distribute the Program is 265void, and will automatically terminate your rights under this License. 266However, parties who have received copies, or rights, from you under 267this License will not have their licenses terminated so long as such 268parties remain in full compliance. 269 270<P> 271 272<STRONG>5.</STRONG> 273 You are not required to accept this License, since you have not 274signed it. However, nothing else grants you permission to modify or 275distribute the Program or its derivative works. These actions are 276prohibited by law if you do not accept this License. Therefore, by 277modifying or distributing the Program (or any work based on the 278Program), you indicate your acceptance of this License to do so, and 279all its terms and conditions for copying, distributing or modifying 280the Program or works based on it. 281 282<P> 283 284<STRONG>6.</STRONG> 285 Each time you redistribute the Program (or any work based on the 286Program), the recipient automatically receives a license from the 287original licensor to copy, distribute or modify the Program subject to 288these terms and conditions. You may not impose any further 289restrictions on the recipients' exercise of the rights granted herein. 290You are not responsible for enforcing compliance by third parties to 291this License. 292 293<P> 294 295<STRONG>7.</STRONG> 296 If, as a consequence of a court judgment or allegation of patent 297infringement or for any other reason (not limited to patent issues), 298conditions are imposed on you (whether by court order, agreement or 299otherwise) that contradict the conditions of this License, they do not 300excuse you from the conditions of this License. If you cannot 301distribute so as to satisfy simultaneously your obligations under this 302License and any other pertinent obligations, then as a consequence you 303may not distribute the Program at all. For example, if a patent 304license would not permit royalty-free redistribution of the Program by 305all those who receive copies directly or indirectly through you, then 306the only way you could satisfy both it and this License would be to 307refrain entirely from distribution of the Program. 308<P> 309 310If any portion of this section is held invalid or unenforceable under 311any particular circumstance, the balance of the section is intended to 312apply and the section as a whole is intended to apply in other 313circumstances. 314<P> 315 316It is not the purpose of this section to induce you to infringe any 317patents or other property right claims or to contest validity of any 318such claims; this section has the sole purpose of protecting the 319integrity of the free software distribution system, which is 320implemented by public license practices. Many people have made 321generous contributions to the wide range of software distributed 322through that system in reliance on consistent application of that 323system; it is up to the author/donor to decide if he or she is willing 324to distribute software through any other system and a licensee cannot 325impose that choice. 326<P> 327 328This section is intended to make thoroughly clear what is believed to 329be a consequence of the rest of this License. 330 331<P> 332 333<STRONG>8.</STRONG> 334 If the distribution and/or use of the Program is restricted in 335certain countries either by patents or by copyrighted interfaces, the 336original copyright holder who places the Program under this License 337may add an explicit geographical distribution limitation excluding 338those countries, so that distribution is permitted only in or among 339countries not thus excluded. In such case, this License incorporates 340the limitation as if written in the body of this License. 341 342<P> 343 344<STRONG>9.</STRONG> 345 The Free Software Foundation may publish revised and/or new versions 346of the General Public License from time to time. Such new versions will 347be similar in spirit to the present version, but may differ in detail to 348address new problems or concerns. 349<P> 350 351Each version is given a distinguishing version number. If the Program 352specifies a version number of this License which applies to it and "any 353later version", you have the option of following the terms and conditions 354either of that version or of any later version published by the Free 355Software Foundation. If the Program does not specify a version number of 356this License, you may choose any version ever published by the Free Software 357Foundation. 358 359<P> 360 361 362<STRONG>10.</STRONG> 363 If you wish to incorporate parts of the Program into other free 364programs whose distribution conditions are different, write to the author 365to ask for permission. For software which is copyrighted by the Free 366Software Foundation, write to the Free Software Foundation; we sometimes 367make exceptions for this. Our decision will be guided by the two goals 368of preserving the free status of all derivatives of our free software and 369of promoting the sharing and reuse of software generally. 370 371 372 373<P><STRONG>NO WARRANTY</STRONG></P> 374 375<P> 376 377<STRONG>11.</STRONG> 378 BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY 379FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN 380OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES 381PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED 382OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 383MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS 384TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE 385PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, 386REPAIR OR CORRECTION. 387 388<P> 389 390<STRONG>12.</STRONG> 391 IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 392WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR 393REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, 394INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING 395OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED 396TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY 397YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER 398PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE 399POSSIBILITY OF SUCH DAMAGES. 400 401<P> 402 403 404<H2>END OF TERMS AND CONDITIONS</H2> 405</BODY> 406</HTML> 407