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1−GNU GENERAL PUBLIC LICENSE
2−==========================
3−
4−Version 2, June 1991
5−
6−Copyright (C) 1989, 1991 Free Software Foundation, Inc.
7−51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
8−
9−Everyone is permitted to copy and distribute verbatim copies
10−of this license document, but changing it is not allowed.
11−
12−Preamble
13−--------
14−
15−The licenses for most software are designed to take away your
16−freedom to share and change it. By contrast, the GNU General Public
17−License is intended to guarantee your freedom to share and change free
18−software--to make sure the software is free for all its users. This
19−General Public License applies to most of the Free Software
20−Foundation's software and to any other program whose authors commit to
21−using it. (Some other Free Software Foundation software is covered by
22−the GNU Library General Public License instead.) You can apply it to
23−your programs, too.
24−
25−When we speak of free software, we are referring to freedom, not
26−price. Our General Public Licenses are designed to make sure that you
27−have the freedom to distribute copies of free software (and charge for
28−this service if you wish), that you receive source code or can get it
29−if you want it, that you can change the software or use pieces of it
30−in new free programs; and that you know you can do these things.
31−
32−To protect your rights, we need to make restrictions that forbid
33−anyone to deny you these rights or to ask you to surrender the rights.
34−These restrictions translate to certain responsibilities for you if you
35−distribute copies of the software, or if you modify it.
36−
37−For example, if you distribute copies of such a program, whether
38−gratis or for a fee, you must give the recipients all the rights that
39−you have. You must make sure that they, too, receive or can get the
40−source code. And you must show them these terms so they know their
41−rights.
42−
43−We protect your rights with two steps: (1) copyright the software, and
44−(2) offer you this license which gives you legal permission to copy,
45−distribute and/or modify the software.
46−
47−Also, for each author's protection and ours, we want to make certain
48−that everyone understands that there is no warranty for this free
49−software. If the software is modified by someone else and passed on, we
50−want its recipients to know that what they have is not the original, so
51−that any problems introduced by others will not reflect on the original
52−authors' reputations.
53−
54−Finally, any free program is threatened constantly by software
55−patents. We wish to avoid the danger that redistributors of a free
56−program will individually obtain patent licenses, in effect making the
57−program proprietary. To prevent this, we have made it clear that any
58−patent must be licensed for everyone's free use or not licensed at all.
59−
60−The precise terms and conditions for copying, distribution and
61−modification follow.
62−
63−GNU GENERAL PUBLIC LICENSE
64−--------------------------
65−
66−TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
67−
68−0. This License applies to any program or other work which contains
69− a notice placed by the copyright holder saying it may be distributed
70− under the terms of this General Public License. The "Program", below,
71− refers to any such program or work, and a "work based on the Program"
72− means either the Program or any derivative work under copyright law:
73− that is to say, a work containing the Program or a portion of it,
74− either verbatim or with modifications and/or translated into another
75− language. (Hereinafter, translation is included without limitation in
76− the term "modification".) Each licensee is addressed as "you".
77−
78− Activities other than copying, distribution and modification are not
79− covered by this License; they are outside its scope. The act of
80− running the Program is not restricted, and the output from the Program
81− is covered only if its contents constitute a work based on the
82− Program (independent of having been made by running the Program).
83− Whether that is true depends on what the Program does.
84−
85−1. You may copy and distribute verbatim copies of the Program's
86− source code as you receive it, in any medium, provided that you
87− conspicuously and appropriately publish on each copy an appropriate
88− copyright notice and disclaimer of warranty; keep intact all the
89− notices that refer to this License and to the absence of any warranty;
90− and give any other recipients of the Program a copy of this License
91− along with the Program.
92−
93− You may charge a fee for the physical act of transferring a copy, and
94− you may at your option offer warranty protection in exchange for a fee.
95−
96−2. You may modify your copy or copies of the Program or any portion
97− of it, thus forming a work based on the Program, and copy and
98− distribute such modifications or work under the terms of Section 1
99− above, provided that you also meet all of these conditions:
100−
101− a) You must cause the modified files to carry prominent notices
102− stating that you changed the files and the date of any change.
103−
104− b) You must cause any work that you distribute or publish, that in
105− whole or in part contains or is derived from the Program or any
106− part thereof, to be licensed as a whole at no charge to all third
107− parties under the terms of this License.
108−
109− c) If the modified program normally reads commands interactively
110− when run, you must cause it, when started running for such
111− interactive use in the most ordinary way, to print or display an
112− announcement including an appropriate copyright notice and a
113− notice that there is no warranty (or else, saying that you provide
114− a warranty) and that users may redistribute the program under
115− these conditions, and telling the user how to view a copy of this
116− License. (Exception: if the Program itself is interactive but
117− does not normally print such an announcement, your work based on
118− the Program is not required to print an announcement.)
119−
120− These requirements apply to the modified work as a whole. If
121− identifiable sections of that work are not derived from the Program,
122− and can be reasonably considered independent and separate works in
123− themselves, then this License, and its terms, do not apply to those
124− sections when you distribute them as separate works. But when you
125− distribute the same sections as part of a whole which is a work based
126− on the Program, the distribution of the whole must be on the terms of
127− this License, whose permissions for other licensees extend to the
128− entire whole, and thus to each and every part regardless of who wrote it.
129−
130− Thus, it is not the intent of this section to claim rights or contest
131− your rights to work written entirely by you; rather, the intent is to
132− exercise the right to control the distribution of derivative or
133− collective works based on the Program.
134−
135− In addition, mere aggregation of another work not based on the Program
136− with the Program (or with a work based on the Program) on a volume of
137− a storage or distribution medium does not bring the other work under
138− the scope of this License.
139−
140−3. You may copy and distribute the Program (or a work based on it,
141− under Section 2) in object code or executable form under the terms of
142− Sections 1 and 2 above provided that you also do one of the following:
143−
144− a) Accompany it with the complete corresponding machine-readable
145− source code, which must be distributed under the terms of Sections
146− 1 and 2 above on a medium customarily used for software interchange; or,
147−
148− b) Accompany it with a written offer, valid for at least three
149− years, to give any third party, for a charge no more than your
150− cost of physically performing source distribution, a complete
151− machine-readable copy of the corresponding source code, to be
152− distributed under the terms of Sections 1 and 2 above on a medium
153− customarily used for software interchange; or,
154−
155− c) Accompany it with the information you received as to the offer
156− to distribute corresponding source code. (This alternative is
157− allowed only for noncommercial distribution and only if you
158− received the program in object code or executable form with such
159− an offer, in accord with Subsection b above.)
160−
161− The source code for a work means the preferred form of the work for
162− making modifications to it. For an executable work, complete source
163− code means all the source code for all modules it contains, plus any
164− associated interface definition files, plus the scripts used to
165− control compilation and installation of the executable. However, as a
166− special exception, the source code distributed need not include
167− anything that is normally distributed (in either source or binary
168− form) with the major components (compiler, kernel, and so on) of the
169− operating system on which the executable runs, unless that component
170− itself accompanies the executable.
171−
172− If distribution of executable or object code is made by offering
173− access to copy from a designated place, then offering equivalent
174− access to copy the source code from the same place counts as
175− distribution of the source code, even though third parties are not
176− compelled to copy the source along with the object code.
177−
178−4. You may not copy, modify, sublicense, or distribute the Program
179− except as expressly provided under this License. Any attempt
180− otherwise to copy, modify, sublicense or distribute the Program is
181− void, and will automatically terminate your rights under this License.
182− However, parties who have received copies, or rights, from you under
183− this License will not have their licenses terminated so long as such
184− parties remain in full compliance.
185−
186−5. You are not required to accept this License, since you have not
187− signed it. However, nothing else grants you permission to modify or
188− distribute the Program or its derivative works. These actions are
189− prohibited by law if you do not accept this License. Therefore, by
190− modifying or distributing the Program (or any work based on the
191− Program), you indicate your acceptance of this License to do so, and
192− all its terms and conditions for copying, distributing or modifying
193− the Program or works based on it.
194−
195−6. Each time you redistribute the Program (or any work based on the
196− Program), the recipient automatically receives a license from the
197− original licensor to copy, distribute or modify the Program subject to
198− these terms and conditions. You may not impose any further
199− restrictions on the recipients' exercise of the rights granted herein.
200− You are not responsible for enforcing compliance by third parties to
201− this License.
202−
203−7. If, as a consequence of a court judgment or allegation of patent
204− infringement or for any other reason (not limited to patent issues),
205− conditions are imposed on you (whether by court order, agreement or
206− otherwise) that contradict the conditions of this License, they do not
207− excuse you from the conditions of this License. If you cannot
208− distribute so as to satisfy simultaneously your obligations under this
209− License and any other pertinent obligations, then as a consequence you
210− may not distribute the Program at all. For example, if a patent
211− license would not permit royalty-free redistribution of the Program by
212− all those who receive copies directly or indirectly through you, then
213− the only way you could satisfy both it and this License would be to
214− refrain entirely from distribution of the Program.
215−
216− If any portion of this section is held invalid or unenforceable under
217− any particular circumstance, the balance of the section is intended to
218− apply and the section as a whole is intended to apply in other
219− circumstances.
220−
221− It is not the purpose of this section to induce you to infringe any
222− patents or other property right claims or to contest validity of any
223− such claims; this section has the sole purpose of protecting the
224− integrity of the free software distribution system, which is
225− implemented by public license practices. Many people have made
226− generous contributions to the wide range of software distributed
227− through that system in reliance on consistent application of that
228− system; it is up to the author/donor to decide if he or she is willing
229− to distribute software through any other system and a licensee cannot
230− impose that choice.
231−
232− This section is intended to make thoroughly clear what is believed to
233− be a consequence of the rest of this License.
234−
235−8. If the distribution and/or use of the Program is restricted in
236− certain countries either by patents or by copyrighted interfaces, the
237− original copyright holder who places the Program under this License
238− may add an explicit geographical distribution limitation excluding
239− those countries, so that distribution is permitted only in or among
240− countries not thus excluded. In such case, this License incorporates
241− the limitation as if written in the body of this License.
242−
243−9. The Free Software Foundation may publish revised and/or new versions
244− of the General Public License from time to time. Such new versions will
245− be similar in spirit to the present version, but may differ in detail to
246− address new problems or concerns.
247−
248− Each version is given a distinguishing version number. If the Program
249− specifies a version number of this License which applies to it and "any
250− later version", you have the option of following the terms and conditions
251− either of that version or of any later version published by the Free
252− Software Foundation. If the Program does not specify a version number of
253− this License, you may choose any version ever published by the Free Software
254− Foundation.
255−
256−10. If you wish to incorporate parts of the Program into other free
257− programs whose distribution conditions are different, write to the author
258− to ask for permission. For software which is copyrighted by the Free
259− Software Foundation, write to the Free Software Foundation; we sometimes
260− make exceptions for this. Our decision will be guided by the two goals
261− of preserving the free status of all derivatives of our free software and
262− of promoting the sharing and reuse of software generally.
263−
264−NO WARRANTY
265−
266−11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
267− FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
268− OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
269− PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
270− OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
271− MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
272− TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
273− PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
274− REPAIR OR CORRECTION.
275−
276−12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
277− WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
278− REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
279− INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
280− OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
281− TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
282− YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
283− PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
284− POSSIBILITY OF SUCH DAMAGES.
285−
286−END OF TERMS AND CONDITIONS
287−
288−How to Apply These Terms to Your New Programs
289−---------------------------------------------
290−
291−If you develop a new program, and you want it to be of the greatest
292−possible use to the public, the best way to achieve this is to make it
293−free software which everyone can redistribute and change under these terms.
294−
295−To do so, attach the following notices to the program. It is safest
296−to attach them to the start of each source file to most effectively
297−convey the exclusion of warranty; and each file should have at least
298−the "copyright" line and a pointer to where the full notice is found.
299−
300− <one line to give the program's name and a brief idea of what it does.>
301− Copyright (C) <year> <name of author>
302−
303− This program is free software; you can redistribute it and/or modify
304− it under the terms of the GNU General Public License as published by
305− the Free Software Foundation; either version 2 of the License, or
306− (at your option) any later version.
307−
308− This program is distributed in the hope that it will be useful,
309− but WITHOUT ANY WARRANTY; without even the implied warranty of
310− MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
311− GNU General Public License for more details.
312−
313− You should have received a copy of the GNU General Public License
314− along with this program; if not, write to the Free Software
315− Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
316−
317−Also add information on how to contact you by electronic and paper mail.
318−
319−If the program is interactive, make it output a short notice like this
320−when it starts in an interactive mode:
321−
322− Gnomovision version 69, Copyright (C) year name of author
323− Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
324− This is free software, and you are welcome to redistribute it
325− under certain conditions; type `show c' for details.
326−
327−The hypothetical commands `show w' and `show c' should show the appropriate
328−parts of the General Public License. Of course, the commands you use may
329−be called something other than `show w' and `show c'; they could even be
330−mouse-clicks or menu items--whatever suits your program.
331−
332−You should also get your employer (if you work as a programmer) or your
333−school, if any, to sign a "copyright disclaimer" for the program, if
334−necessary. Here is a sample; alter the names:
335−
336− Yoyodyne, Inc., hereby disclaims all copyright interest in the program
337− `Gnomovision' (which makes passes at compilers) written by James Hacker.
338−
339− <signature of Ty Coon>, 1 April 1989
340− Ty Coon, President of Vice
341−
342−This General Public License does not permit incorporating your program into
343−proprietary programs. If your program is a subroutine library, you may
344−consider it more useful to permit linking proprietary applications with the
345−library. If this is what you want to do, use the GNU Library General
346−Public License instead of this License.