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3
4 <h3>The GNU General Public License (GPL)</h3>
5
6 <h3>Version 2, June 1991</h3>
7
8 <tt>
9
10 <p> Copyright (C) 1989, 1991 Free Software Foundation, Inc.<br>
11 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA</p>
12
13 <p> Everyone is permitted to copy and distribute verbatim copies<br>
14  of this license document, but changing it is not allowed.</p>
15
16                 <strong><p>Preamble</p></strong>
17
18   <p>The licenses for most software are designed to take away your
19 freedom to share and change it.  By contrast, the GNU General Public
20 License is intended to guarantee your freedom to share and change free
21 software--to make sure the software is free for all its users.  This
22 General Public License applies to most of the Free Software
23 Foundation's software and to any other program whose authors commit to
24 using it.  (Some other Free Software Foundation software is covered by
25 the GNU Library General Public License instead.)  You can apply it to
26 your programs, too.</p>
27
28   <p>When we speak of free software, we are referring to freedom, not
29 price.  Our General Public Licenses are designed to make sure that you
30 have the freedom to distribute copies of free software (and charge for
31 this service if you wish), that you receive source code or can get it
32 if you want it, that you can change the software or use pieces of it
33 in new free programs; and that you know you can do these things.</p>
34
35 <p>
36   To protect your rights, we need to make restrictions that forbid
37 anyone to deny you these rights or to ask you to surrender the rights.
38 These restrictions translate to certain responsibilities for you if you
39 distribute copies of the software, or if you modify it.</p>
40
41   <p>For example, if you distribute copies of such a program, whether
42 gratis or for a fee, you must give the recipients all the rights that
43 you have.  You must make sure that they, too, receive or can get the
44 source code.  And you must show them these terms so they know their
45 rights.</p>
46
47   <p>We protect your rights with two steps: (1) copyright the software, and
48 (2) offer you this license which gives you legal permission to copy,
49 distribute and/or modify the software.</p>
50
51   <p>Also, for each author's protection and ours, we want to make certain
52 that everyone understands that there is no warranty for this free
53 software.  If the software is modified by someone else and passed on, we
54 want its recipients to know that what they have is not the original, so
55 that any problems introduced by others will not reflect on the original
56 authors' reputations.</p>
57
58   <p>Finally, any free program is threatened constantly by software
59 patents.  We wish to avoid the danger that redistributors of a free
60 program will individually obtain patent licenses, in effect making the
61 program proprietary.  To prevent this, we have made it clear that any
62 patent must be licensed for everyone's free use or not licensed at all.</p>
63
64   <p>The precise terms and conditions for copying, distribution and
65 modification follow.</p>
66
67                     <strong><p>TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION</p></strong>
68
69   <p><strong>0</strong>. This License applies to any program or other work which contains
70 a notice placed by the copyright holder saying it may be distributed
71 under the terms of this General Public License.  The "Program", below,
72 refers to any such program or work, and a "work based on the Program"
73 means either the Program or any derivative work under copyright law:
74 that is to say, a work containing the Program or a portion of it,
75 either verbatim or with modifications and/or translated into another
76 language.  (Hereinafter, translation is included without limitation in
77 the term "modification".)  Each licensee is addressed as "you".</p>
78
79 <p>Activities other than copying, distribution and modification are not
80 covered by this License; they are outside its scope.  The act of
81 running the Program is not restricted, and the output from the Program
82 is covered only if its contents constitute a work based on the
83 Program (independent of having been made by running the Program).
84 Whether that is true depends on what the Program does.</p>
85
86   <p><strong>1</strong>. You may copy and distribute verbatim copies of the Program's
87 source code as you receive it, in any medium, provided that you
88 conspicuously and appropriately publish on each copy an appropriate
89 copyright notice and disclaimer of warranty; keep intact all the
90 notices that refer to this License and to the absence of any warranty;
91 and give any other recipients of the Program a copy of this License
92 along with the Program.</p>
93
94 <p>You may charge a fee for the physical act of transferring a copy, and
95 you may at your option offer warranty protection in exchange for a fee.</p>
96
97 <p>  <strong>2</strong>. You may modify your copy or copies of the Program or any portion
98 of it, thus forming a work based on the Program, and copy and
99 distribute such modifications or work under the terms of Section 1
100 above, provided that you also meet all of these conditions:</p>
101
102 <blockquote>
103
104     <p>a) You must cause the modified files to carry prominent notices
105     stating that you changed the files and the date of any change.</p>
106
107     <p>b) You must cause any work that you distribute or publish, that in
108     whole or in part contains or is derived from the Program or any
109     part thereof, to be licensed as a whole at no charge to all third
110     parties under the terms of this License.</p>
111
112     <p>c) If the modified program normally reads commands interactively
113     when run, you must cause it, when started running for such
114     interactive use in the most ordinary way, to print or display an
115     announcement including an appropriate copyright notice and a
116     notice that there is no warranty (or else, saying that you provide
117     a warranty) and that users may redistribute the program under
118     these conditions, and telling the user how to view a copy of this
119     License.  (Exception: if the Program itself is interactive but
120     does not normally print such an announcement, your work based on
121     the Program is not required to print an announcement.)</p></blockquote>
122
123 <p>These requirements apply to the modified work as a whole.  If
124 identifiable sections of that work are not derived from the Program,
125 and can be reasonably considered independent and separate works in
126 themselves, then this License, and its terms, do not apply to those
127 sections when you distribute them as separate works.  But when you
128 distribute the same sections as part of a whole which is a work based
129 on the Program, the distribution of the whole must be on the terms of
130 this License, whose permissions for other licensees extend to the
131 entire whole, and thus to each and every part regardless of who wrote it.</p>
132
133 <p>Thus, it is not the intent of this section to claim rights or contest
134 your rights to work written entirely by you; rather, the intent is to
135 exercise the right to control the distribution of derivative or
136 collective works based on the Program.</p>
137
138 <p>In addition, mere aggregation of another work not based on the Program
139 with the Program (or with a work based on the Program) on a volume of
140 a storage or distribution medium does not bring the other work under
141 the scope of this License.</p>
142
143   <p><strong>3</strong>. You may copy and distribute the Program (or a work based on it,
144 under Section 2) in object code or executable form under the terms of
145 Sections 1 and 2 above provided that you also do one of the following:</p>
146 <blockquote>
147     <p>a) Accompany it with the complete corresponding machine-readable
148     source code, which must be distributed under the terms of Sections
149     1 and 2 above on a medium customarily used for software interchange; or,</p>
150
151    <p> b) Accompany it with a written offer, valid for at least three
152     years, to give any third party, for a charge no more than your
153     cost of physically performing source distribution, a complete
154     machine-readable copy of the corresponding source code, to be
155     distributed under the terms of Sections 1 and 2 above on a medium
156     customarily used for software interchange; or,</p>
157
158     <p>c) Accompany it with the information you received as to the offer
159     to distribute corresponding source code.  (This alternative is
160     allowed only for noncommercial distribution and only if you
161     received the program in object code or executable form with such
162     an offer, in accord with Subsection b above.)</p></blockquote>
163
164 <p>The source code for a work means the preferred form of the work for
165 making modifications to it.  For an executable work, complete source
166 code means all the source code for all modules it contains, plus any
167 associated interface definition files, plus the scripts used to
168 control compilation and installation of the executable.  However, as a
169 special exception, the source code distributed need not include
170 anything that is normally distributed (in either source or binary
171 form) with the major components (compiler, kernel, and so on) of the
172 operating system on which the executable runs, unless that component
173 itself accompanies the executable.</p>
174
175 <p>If distribution of executable or object code is made by offering
176 access to copy from a designated place, then offering equivalent
177 access to copy the source code from the same place counts as
178 distribution of the source code, even though third parties are not
179 compelled to copy the source along with the object code.</p>
180
181   <p><strong>4</strong>. You may not copy, modify, sublicense, or distribute the Program
182 except as expressly provided under this License.  Any attempt
183 otherwise to copy, modify, sublicense or distribute the Program is
184 void, and will automatically terminate your rights under this License.
185 However, parties who have received copies, or rights, from you under
186 this License will not have their licenses terminated so long as such
187 parties remain in full compliance.</p>
188
189  <p> <strong>5</strong>. You are not required to accept this License, since you have not
190 signed it.  However, nothing else grants you permission to modify or
191 distribute the Program or its derivative works.  These actions are
192 prohibited by law if you do not accept this License.  Therefore, by
193 modifying or distributing the Program (or any work based on the
194 Program), you indicate your acceptance of this License to do so, and
195 all its terms and conditions for copying, distributing or modifying
196 the Program or works based on it.</p>
197
198   <p><strong>6</strong>. Each time you redistribute the Program (or any work based on the
199 Program), the recipient automatically receives a license from the
200 original licensor to copy, distribute or modify the Program subject to
201 these terms and conditions.  You may not impose any further
202 restrictions on the recipients' exercise of the rights granted herein.
203 You are not responsible for enforcing compliance by third parties to
204 this License.</p>
205
206   <p><strong>7</strong>. If, as a consequence of a court judgment or allegation of patent
207 infringement or for any other reason (not limited to patent issues),
208 conditions are imposed on you (whether by court order, agreement or
209 otherwise) that contradict the conditions of this License, they do not
210 excuse you from the conditions of this License.  If you cannot
211 distribute so as to satisfy simultaneously your obligations under this
212 License and any other pertinent obligations, then as a consequence you
213 may not distribute the Program at all.  For example, if a patent
214 license would not permit royalty-free redistribution of the Program by
215 all those who receive copies directly or indirectly through you, then
216 the only way you could satisfy both it and this License would be to
217 refrain entirely from distribution of the Program.</p>
218
219 <p>If any portion of this section is held invalid or unenforceable under
220 any particular circumstance, the balance of the section is intended to
221 apply and the section as a whole is intended to apply in other
222 circumstances.</p>
223
224 <p>It is not the purpose of this section to induce you to infringe any
225 patents or other property right claims or to contest validity of any
226 such claims; this section has the sole purpose of protecting the
227 integrity of the free software distribution system, which is
228 implemented by public license practices.  Many people have made
229 generous contributions to the wide range of software distributed
230 through that system in reliance on consistent application of that
231 system; it is up to the author/donor to decide if he or she is willing
232 to distribute software through any other system and a licensee cannot
233 impose that choice.</p>
234 <p>
235
236 This section is intended to make thoroughly clear what is believed to
237 be a consequence of the rest of this License.</p>
238
239 <p>  <strong>8</strong>. If the distribution and/or use of the Program is restricted in
240 certain countries either by patents or by copyrighted interfaces, the
241 original copyright holder who places the Program under this License
242 may add an explicit geographical distribution limitation excluding
243 those countries, so that distribution is permitted only in or among
244 countries not thus excluded.  In such case, this License incorporates
245 the limitation as if written in the body of this License.</p>
246 <p>
247   <strong>9</strong>. The Free Software Foundation may publish revised and/or new versions
248 of the General Public License from time to time.  Such new versions will
249 be similar in spirit to the present version, but may differ in detail to
250 address new problems or concerns.</p>
251
252 <p>Each version is given a distinguishing version number.  If the Program
253 specifies a version number of this License which applies to it and "any
254 later version", you have the option of following the terms and conditions
255 either of that version or of any later version published by the Free
256 Software Foundation.  If the Program does not specify a version number of
257 this License, you may choose any version ever published by the Free Software
258 Foundation.</p>
259
260   <p><strong>10</strong>. If you wish to incorporate parts of the Program into other free
261 programs whose distribution conditions are different, write to the author
262 to ask for permission.  For software which is copyrighted by the Free
263 Software Foundation, write to the Free Software Foundation; we sometimes
264 make exceptions for this.  Our decision will be guided by the two goals
265 of preserving the free status of all derivatives of our free software and
266 of promoting the sharing and reuse of software generally.</p>
267
268 <p><strong>NO WARRANTY</strong></p>
269
270   <p><strong>11</strong>. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
271 FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
272 OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
273 PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
274 OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
275 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
276 TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
277 PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
278 REPAIR OR CORRECTION.</p>
279
280   <p><strong>12</strong>. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
281 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
282 REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
283 INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
284 OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
285 TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
286 YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
287 PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
288 POSSIBILITY OF SUCH DAMAGES.</p>
289
290                      <p>END OF TERMS AND CONDITIONS</p>
291
292
293
294
295
296
297
298
299 <!-- START OF 'HOW TO APPLY' SECTION -->
300 <p>
301 <strong> How to Apply These Terms to Your New Programs</strong></p>
302
303 <p>  If you develop a new program, and you want it to be of the greatest
304 possible use to the public, the best way to achieve this is to make it
305 free software which everyone can redistribute and change under these terms.</p>
306
307  <p> To do so, attach the following notices to the program.  It is safest
308 to attach them to the start of each source file to most effectively
309 convey the exclusion of warranty; and each file should have at least
310 the "copyright" line and a pointer to where the full notice is found.</p>
311
312
313 <blockquote>
314     <p>One line to give the program's name and a brief idea of what it does.<br>
315     Copyright (C) &lt;year&gt;  &lt;name of author&gt;</p>
316
317     <p>This program is free software; you can redistribute it and/or modify
318     it under the terms of the GNU General Public License as published by
319     the Free Software Foundation; either version 2 of the License, or
320     (at your option) any later version.</p>
321
322   <p>  This program is distributed in the hope that it will be useful,
323     but WITHOUT ANY WARRANTY; without even the implied warranty of
324     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
325     GNU General Public License for more details.</p>
326
327     <p>You should have received a copy of the GNU General Public License
328     along with this program; if not, write to the Free Software
329     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
330     USA</p>
331 </blockquote>
332 <p>
333 Also add information on how to contact you by electronic and paper mail.</p>
334
335 <p>If the program is interactive, make it output a short notice like this
336 when it starts in an interactive mode:</p>
337
338 <blockquote>
339    <p> Gnomovision version 69, Copyright (C) year name of author
340     Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
341     This is free software, and you are welcome to redistribute it
342     under certain conditions; type `show c' for details.</p>
343 </blockquote>
344
345 <p>The hypothetical commands `show w' and `show c' should show the appropriate
346 parts of the General Public License.  Of course, the commands you use may
347 be called something other than `show w' and `show c'; they could even be
348 mouse-clicks or menu items--whatever suits your program.</p>
349 <p>
350 You should also get your employer (if you work as a programmer) or your
351 school, if any, to sign a "copyright disclaimer" for the program, if
352 necessary.  Here is a sample; alter the names:</p>
353
354 <blockquote>
355   <p>Yoyodyne, Inc., hereby disclaims all copyright interest in the program
356   `Gnomovision' (which makes passes at compilers) written by James Hacker.</p>
357
358   <p>signature of Ty Coon, 1 April 1989<br>
359   Ty Coon, President of Vice</p>
360   </blockquote>
361
362 <p>This General Public License does not permit incorporating your program into
363 proprietary programs.  If your program is a subroutine library, you may
364 consider it more useful to permit linking proprietary applications with the
365 library.  If this is what you want to do, use the GNU Library General
366 Public License instead of this License.</p>
367
368 </body>
369 </html>
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