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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