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