1### GNU GENERAL PUBLIC LICENSE
5 Copyright (C) 1989, 1991 Free Software Foundation, Inc.
6 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
8 Everyone is permitted to copy and distribute verbatim copies
9 of this license document, but changing it is not allowed.
13The licenses for most software are designed to take away your freedom
14to share and change it. By contrast, the GNU General Public License is
15intended to guarantee your freedom to share and change free
16software--to make sure the software is free for all its users. This
17General Public License applies to most of the Free Software
18Foundation's software and to any other program whose authors commit to
19using it. (Some other Free Software Foundation software is covered by
20the GNU Lesser General Public License instead.) You can apply it to
23When we speak of free software, we are referring to freedom, not
24price. Our General Public Licenses are designed to make sure that you
25have the freedom to distribute copies of free software (and charge for
26this service if you wish), that you receive source code or can get it
27if you want it, that you can change the software or use pieces of it
28in new free programs; and that you know you can do these things.
30To protect your rights, we need to make restrictions that forbid
31anyone to deny you these rights or to ask you to surrender the rights.
32These restrictions translate to certain responsibilities for you if
33you distribute copies of the software, or if you modify it.
35For example, if you distribute copies of such a program, whether
36gratis or for a fee, you must give the recipients all the rights that
37you have. You must make sure that they, too, receive or can get the
38source code. And you must show them these terms so they know their
41We protect your rights with two steps: (1) copyright the software, and
42(2) offer you this license which gives you legal permission to copy,
43distribute and/or modify the software.
45Also, for each author's protection and ours, we want to make certain
46that everyone understands that there is no warranty for this free
47software. If the software is modified by someone else and passed on,
48we want its recipients to know that what they have is not the
49original, so that any problems introduced by others will not reflect
50on the original authors' reputations.
52Finally, any free program is threatened constantly by software
53patents. We wish to avoid the danger that redistributors of a free
54program will individually obtain patent licenses, in effect making the
55program proprietary. To prevent this, we have made it clear that any
56patent must be licensed for everyone's free use or not licensed at
59The precise terms and conditions for copying, distribution and
62### TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
64**0.** This License applies to any program or other work which
65contains a notice placed by the copyright holder saying it may be
66distributed under the terms of this General Public License. The
67"Program", below, refers to any such program or work, and a "work
68based on the Program" means either the Program or any derivative work
69under copyright law: that is to say, a work containing the Program or
70a portion of it, either verbatim or with modifications and/or
71translated into another language. (Hereinafter, translation is
72included without limitation in the term "modification".) Each licensee
75Activities other than copying, distribution and modification are not
76covered by this License; they are outside its scope. The act of
77running the Program is not restricted, and the output from the Program
78is covered only if its contents constitute a work based on the Program
79(independent of having been made by running the Program). Whether that
80is true depends on what the Program does.
82**1.** You may copy and distribute verbatim copies of the Program's
83source code as you receive it, in any medium, provided that you
84conspicuously and appropriately publish on each copy an appropriate
85copyright notice and disclaimer of warranty; keep intact all the
86notices that refer to this License and to the absence of any warranty;
87and give any other recipients of the Program a copy of this License
88along with the Program.
90You may charge a fee for the physical act of transferring a copy, and
91you may at your option offer warranty protection in exchange for a
94**2.** You may modify your copy or copies of the Program or any
95portion of it, thus forming a work based on the Program, and copy and
96distribute such modifications or work under the terms of Section 1
97above, provided that you also meet all of these conditions:
100**a)** You must cause the modified files to carry prominent notices
101stating that you changed the files and the date of any change.
104**b)** You must cause any work that you distribute or publish, that in
105whole or in part contains or is derived from the Program or any part
106thereof, to be licensed as a whole at no charge to all third parties
107under the terms of this License.
110**c)** If the modified program normally reads commands interactively
111when run, you must cause it, when started running for such interactive
112use in the most ordinary way, to print or display an announcement
113including an appropriate copyright notice and a notice that there is
114no warranty (or else, saying that you provide a warranty) and that
115users may redistribute the program under these conditions, and telling
116the user how to view a copy of this License. (Exception: if the
117Program itself is interactive but does not normally print such an
118announcement, your work based on the Program is not required to print
121These requirements apply to the modified work as a whole. If
122identifiable sections of that work are not derived from the Program,
123and can be reasonably considered independent and separate works in
124themselves, then this License, and its terms, do not apply to those
125sections when you distribute them as separate works. But when you
126distribute the same sections as part of a whole which is a work based
127on the Program, the distribution of the whole must be on the terms of
128this License, whose permissions for other licensees extend to the
129entire whole, and thus to each and every part regardless of who wrote
132Thus, it is not the intent of this section to claim rights or contest
133your rights to work written entirely by you; rather, the intent is to
134exercise the right to control the distribution of derivative or
135collective works based on the Program.
137In addition, mere aggregation of another work not based on the Program
138with the Program (or with a work based on the Program) on a volume of
139a storage or distribution medium does not bring the other work under
140the scope of this License.
142**3.** You may copy and distribute the Program (or a work based on it,
143under Section 2) in object code or executable form under the terms of
144Sections 1 and 2 above provided that you also do one of the following:
147**a)** Accompany it with the complete corresponding machine-readable
148source code, which must be distributed under the terms of Sections 1
149and 2 above on a medium customarily used for software interchange; or,
152**b)** Accompany it with a written offer, valid for at least three
153years, to give any third party, for a charge no more than your cost of
154physically performing source distribution, a complete machine-readable
155copy of the corresponding source code, to be distributed under the
156terms of Sections 1 and 2 above on a medium customarily used for
157software interchange; or,
160**c)** Accompany it with the information you received as to the offer
161to distribute corresponding source code. (This alternative is allowed
162only for noncommercial distribution and only if you received the
163program in object code or executable form with such an offer, in
164accord with Subsection b above.)
166The source code for a work means the preferred form of the work for
167making modifications to it. For an executable work, complete source
168code means all the source code for all modules it contains, plus any
169associated interface definition files, plus the scripts used to
170control compilation and installation of the executable. However, as a
171special exception, the source code distributed need not include
172anything that is normally distributed (in either source or binary
173form) with the major components (compiler, kernel, and so on) of the
174operating system on which the executable runs, unless that component
175itself accompanies the executable.
177If distribution of executable or object code is made by offering
178access to copy from a designated place, then offering equivalent
179access to copy the source code from the same place counts as
180distribution of the source code, even though third parties are not
181compelled to copy the source along with the object code.
183**4.** You may not copy, modify, sublicense, or distribute the Program
184except as expressly provided under this License. Any attempt otherwise
185to copy, modify, sublicense or distribute the Program is void, and
186will automatically terminate your rights under this License. However,
187parties who have received copies, or rights, from you under this
188License will not have their licenses terminated so long as such
189parties remain in full compliance.
191**5.** You are not required to accept this License, since you have not
192signed it. However, nothing else grants you permission to modify or
193distribute the Program or its derivative works. These actions are
194prohibited by law if you do not accept this License. Therefore, by
195modifying or distributing the Program (or any work based on the
196Program), you indicate your acceptance of this License to do so, and
197all its terms and conditions for copying, distributing or modifying
198the Program or works based on it.
200**6.** Each time you redistribute the Program (or any work based on
201the Program), the recipient automatically receives a license from the
202original licensor to copy, distribute or modify the Program subject to
203these terms and conditions. You may not impose any further
204restrictions on the recipients' exercise of the rights granted herein.
205You are not responsible for enforcing compliance by third parties to
208**7.** If, as a consequence of a court judgment or allegation of
209patent infringement or for any other reason (not limited to patent
210issues), conditions are imposed on you (whether by court order,
211agreement or otherwise) that contradict the conditions of this
212License, they do not excuse you from the conditions of this License.
213If you cannot distribute so as to satisfy simultaneously your
214obligations under this License and any other pertinent obligations,
215then as a consequence you may not distribute the Program at all. For
216example, if a patent license would not permit royalty-free
217redistribution of the Program by all those who receive copies directly
218or indirectly through you, then the only way you could satisfy both it
219and this License would be to refrain entirely from distribution of the
222If any portion of this section is held invalid or unenforceable under
223any particular circumstance, the balance of the section is intended to
224apply and the section as a whole is intended to apply in other
227It is not the purpose of this section to induce you to infringe any
228patents or other property right claims or to contest validity of any
229such claims; this section has the sole purpose of protecting the
230integrity of the free software distribution system, which is
231implemented by public license practices. Many people have made
232generous contributions to the wide range of software distributed
233through that system in reliance on consistent application of that
234system; it is up to the author/donor to decide if he or she is willing
235to distribute software through any other system and a licensee cannot
238This section is intended to make thoroughly clear what is believed to
239be a consequence of the rest of this License.
241**8.** If the distribution and/or use of the Program is restricted in
242certain countries either by patents or by copyrighted interfaces, the
243original copyright holder who places the Program under this License
244may add an explicit geographical distribution limitation excluding
245those countries, so that distribution is permitted only in or among
246countries not thus excluded. In such case, this License incorporates
247the limitation as if written in the body of this License.
249**9.** The Free Software Foundation may publish revised and/or new
250versions of the General Public License from time to time. Such new
251versions will be similar in spirit to the present version, but may
252differ in detail to address new problems or concerns.
254Each version is given a distinguishing version number. If the Program
255specifies a version number of this License which applies to it and
256"any later version", you have the option of following the terms and
257conditions either of that version or of any later version published by
258the Free Software Foundation. If the Program does not specify a
259version number of this License, you may choose any version ever
260published by the Free Software Foundation.
262**10.** If you wish to incorporate parts of the Program into other
263free programs whose distribution conditions are different, write to
264the author to ask for permission. For software which is copyrighted by
265the Free Software Foundation, write to the Free Software Foundation;
266we sometimes make exceptions for this. Our decision will be guided by
267the two goals of preserving the free status of all derivatives of our
268free software and of promoting the sharing and reuse of software
273**11.** BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO
274WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
275EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
276OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY
277KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
278IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
279PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
280PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME
281THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
283**12.** IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
284WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
285AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU
286FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
287CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
288PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
289RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
290FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF
291SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
294### END OF TERMS AND CONDITIONS
296### How to Apply These Terms to Your New Programs
298If you develop a new program, and you want it to be of the greatest
299possible use to the public, the best way to achieve this is to make it
300free software which everyone can redistribute and change under these
303To do so, attach the following notices to the program. It is safest to
304attach them to the start of each source file to most effectively
305convey the exclusion of warranty; and each file should have at least
306the "copyright" line and a pointer to where the full notice is found.
308 one line to give the program's name and an idea of what it does.
309 Copyright (C) yyyy name of author
311 This program is free software; you can redistribute it and/or
312 modify it under the terms of the GNU General Public License
313 as published by the Free Software Foundation; either version 2
314 of the License, or (at your option) any later version.
316 This program is distributed in the hope that it will be useful,
317 but WITHOUT ANY WARRANTY; without even the implied warranty of
318 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
319 GNU General Public License for more details.
321 You should have received a copy of the GNU General Public License
322 along with this program; if not, write to the Free Software
323 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
325Also add information on how to contact you by electronic and paper
328If the program is interactive, make it output a short notice like this
329when it starts in an interactive mode:
331 Gnomovision version 69, Copyright (C) year name of author
332 Gnomovision comes with ABSOLUTELY NO WARRANTY; for details
333 type `show w'. This is free software, and you are welcome
334 to redistribute it under certain conditions; type `show c'
337The hypothetical commands \`show w' and \`show c' should show the
338appropriate parts of the General Public License. Of course, the
339commands you use may be called something other than \`show w' and
340\`show c'; they could even be mouse-clicks or menu items--whatever
343You should also get your employer (if you work as a programmer) or
344your school, if any, to sign a "copyright disclaimer" for the program,
345if necessary. Here is a sample; alter the names:
347 Yoyodyne, Inc., hereby disclaims all copyright
348 interest in the program `Gnomovision'
349 (which makes passes at compilers) written
352 signature of Ty Coon, 1 April 1989
353 Ty Coon, President of Vice
355This General Public License does not permit incorporating your program
356into proprietary programs. If your program is a subroutine library,
357you may consider it more useful to permit linking proprietary
358applications with the library. If this is what you want to do, use the
359[GNU Lesser General Public
360License](http://www.gnu.org/licenses/lgpl.html) instead of this
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