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<HEAD>
<TITLE>GNU General Public License</TITLE>
</HEAD><BODY>
<B>The GNU General Public License
<P></P>
</B>Version 2, June 1991
<P></P>
Copyright © 1989, 1991 Free Software Foundation, Inc.
<BR>59 Temple Place / Suite 330, Boston, MA 02111-1307, USA
<P></P>
Everyone is permitted to copy and distribute verbatim copies of this license
document, but changing it is not allowed.
<P></P>
<B>Preamble
<P></P>
</B>The licenses for most software are designed to take away your freedom to share
and change it. By contrast, the GNU General Public License is intended to guarantee your freedom to share and
change free software to make sure the software is free for all its users. This General Public
License applies to most of the Free Software Foundation's software and to any other program whose authors commit to using it. (Some
other Free Software Foundation software is covered by the GNU Library General Public License instead.) You can apply it to your programs,
too.
<P></P>
When we speak of free software, we are referring to freedom, not price. Our
General Public Licenses are designed to make sure that you have the freedom to
distribute copies of free software (and charge for this service if you wish),
that you receive source code or can get it if you want it, that you can change the
software or use pieces of it in new free programs; and that you know you can
do these things.
<P></P>
To protect your rights, we need to make restrictions that forbid anyone to
deny you these rights or to ask you to surrender the rights. These restrictions
translate to certain responsibilities for you if you distribute copies of the
software, or if you modify it.
<P></P>
For example, if you distribute copies of such a program, whether gratis or for
a fee, you must give the recipients all the rights that you have. You must
make sure that they, too, receive or can get the source code. And you must show
them these terms so they know their rights.
<P></P>
We protect your rights with two steps: (1) copyright the software, and (2)
offer you this license which gives you legal permission to copy, distribute and/or
modify the software.
<P></P>
Also, for each author's protection and ours, we want to make certain that everyone understands that
there is no warranty for this free software. If the software is modified by
someone else and passed on, we want its recipients to know that what they have is
not the original, so that any problems introduced by others will not reflect on
the original authors' reputations.
<P></P>
Finally, any free program is threatened constantly by software patents. We
wish to avoid the danger that redistributors of a free program will individually
obtain patent licenses, in effect making the program proprietary. To prevent
this, we have made it clear that any patent must be licensed for everyone's free use or not licensed at all. The precise terms and conditions for
copying, distribution and modification follow.
<P></P>
<B>TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
<P></P>
</B>0. This License applies to any program or other work which contains a notice
placed by the copyright holder saying it may be distributed under the terms of this
General Public License. The `Program”, below, refers to any such program or work, and a `work based on the Program' means either the Program or any derivative work under copyright law: that is
to say, a work containing the Program or a portion of it, either verbatim or
with modifications and/or translated into another language. (Hereinafter,
translation is included without limitation in the term `modification'.) Each licensee is addressed as `you'.
<P></P>
Activities other than copying, distribution and modification are not covered
by this License; they are outside its scope. The act of running the Program is
not restricted, and the output from the Program is covered only if its contents
constitute a work based on the Program (independent of having been made by
running the Program). Whether that is true depends on what the Program does.
<P></P>
<OL><LI> You may copy and distribute verbatim copies of the Program's source code as you receive it, in any medium, provided that you
conspicuously and appropriately publish on each copy an appropriate copyright notice and
disclaimer of warranty; keep intact all the notices that refer to this License
and to the absence of any warranty; and give any other recipients of the Program
a copy of this License along with the Program.
<P></P>
</OL>You may charge a fee for the physical act of transferring a copy, and you may
at your option offer warranty protection in exchange for a fee.
<P></P>
<OL START="2"><LI> You may modify your copy or copies of the Program or any portion of it, thus
forming a work based on the Program, and copy and distribute such modifications
or work under the terms of Section 1 above, provided that you also meet all of
these conditions:
<P></P>
</OL>a) You must cause the modified files to carry prominent notices stating that you
changed the files and the date of any change.
<P></P>
b) You must cause any work that you distribute or publish, that in whole or in
part contains or is derived from the Program or any part thereof, to be licensed
as a whole at no charge to all third parties under the terms of this License.
<P></P>
c) If the modified program normally reads commands interactively when run, you
must cause it, when started running for such interactive use in the most ordinary
way, to print or display an announcement including an appropriate copyright
notice and a notice that there is no warranty (or else, saying that you provide a
warranty) and that users may redistribute the program under these conditions,
and telling the user how to view a copy of this License. (Exception: if the
Program itself is interactive but does not normally print such an announcement,
your work based on the Program is not required to print an announcement.)
<P></P>
These requirements apply to the modified work as a whole. If identifiable
sections of that work are not derived from the Program, and can be reasonably
considered independent and separate works in themselves, then this License, and its
terms, do not apply to those sections when you distribute them as separate
works. But when you distribute the same sections as part of a whole which is a work
based on the Program, the distribution of the whole must be on the terms of
this License, whose permissions for other licensees extend to the entire whole,
and thus to each and every part regardless of who wrote it.
<P></P>
Thus, it is not the intent of this section to claim rights or contest your
rights to work written entirely by you; rather, the intent is to exercise the
right to control the distribution of derivative or collective works based on the
Program.
<P></P>
In addition, mere aggregation of another work not based on the Program with
the Program (or with a work based on the Program) on a volume of a storage or
distribution medium does not bring the other work under the scope of this License.
<P></P>
<OL START="3"><LI> You may copy and distribute the Program (or a work based on it, under Section
2) in object code or executable form under the terms of Sections 1 and 2 above
provided that you also do one of the following:
<P></P>
</OL>a) Accompany it with the complete corresponding machine-readable source code,
which must be distributed under the terms of Sections 1 and 2 above on a medium
customarily used for software interchange; or,
<P></P>
b) Accompany it with a written offer, valid for at least three years, to give any
third party, for a charge no more than your cost of physically performing
source distribution, a complete machine-readable copy of the corresponding source
code, to be distributed under the terms of Sections 1 and 2 above on a medium
customarily used for software interchange; or,
<P></P>
c) Accompany it with the information you received as to the offer to distribute
corresponding source code. (This alternative is allowed only for noncommercial
distribution and only if you received the program in object code or executable
form with such an offer, in accord with Subsection b above.)
<P></P>
The source code for a work means the preferred form of the work for making
modifications to it. For an executable work, complete source code means all the
source code for all modules it contains, plus any associated interface definition
files, plus the scripts used to control compilation and installation of the
executable. However, as a special exception, the source code distributed need not
include anything that is normally distributed (in either source or binary
form) with the major components (compiler, kernel, and so on) of the operating
system on which the executable runs, unless that component itself accompanies the
executable.
<P></P>
If distribution of executable or object code is made by offering access to
copy from a designated place, then offering equivalent access to copy the source
code from the same place counts as distribution of the source code, even though
third parties are not compelled to copy the source along with the object code.
<P></P>
<OL START="4"><LI> You may not copy, modify, sublicense, or distribute the Program except as
expressly provided under this License. Any attempt otherwise to copy, modify,
sublicense or distribute the Program is void, and will automatically terminate your
rights under this License. However, parties who have received copies, or
rights, from you under this License will not have their licenses terminated so long
as such parties remain in full compliance.
<P></P>
<LI> You are not required to accept this License, since you have not signed it.
However, nothing else grants you permission to modify or distribute the Program or
its derivative works. These actions are prohibited by law if you do not accept
this License. Therefore, by modifying or distributing the Program (or any work
based on the Program), you indicate your acceptance of this License to do so,
and all its terms and conditions for copying, distributing or modifying the
Program or works based on it.
<P></P>
<LI> Each time you redistribute the Program (or any work based on the Program), the
recipient automatically receives a license from the original licensor to copy,
distribute or modify the Program subject to these terms and conditions. You
may not impose any further restrictions on the recipients' exercise of the rights granted herein.
<P></P>
</OL>You are not responsible for enforcing compliance by third parties to this
License.
<P></P>
<OL START="7"><LI> If, as a consequence of a court judgment or allegation of patent infringement
or for any other reason (not limited to patent issues), conditions are imposed
on you (whether by court order, agreement or otherwise) that contradict the
conditions of this License, they do not excuse you from the conditions of this
License. If you cannot distribute so as to satisfy simultaneously your obligations
under this License and any other pertinent obligations, then as a consequence
you may not distribute the Program at all. For example, if a patent license
would not permit royalty-free redistribution of the Program by all those who
receive copies directly or indirectly through you, then the only way you could
satisfy both it and this License would be to refrain entirely from distribution of
the Program.
<P></P>
</OL>If any portion of this section is held invalid or unenforceable under any
particular circumstance, the balance of the section is intended to apply and the
section as a whole is intended to apply in other circumstances.
<P></P>
It is not the purpose of this section to induce you to infringe any patents or
other property right claims or to contest validity of any such claims; this
section has the sole purpose of protecting the integrity of the free software
distribution system, which is implemented by public license practices. Many people
have made generous contributions to the wide range of software distributed
through that system in reliance on consistent application of that system; it is up
to the author/donor to decide if he or she is willing to distribute software
through any other system and a licensee cannot impose that choice.
<P></P>
This section is intended to make thoroughly clear what is believed to be a
consequence of the rest of this License.
<P></P>
<OL START="8"><LI> If the distribution and/or use of the Program is restricted in certain
countries either by patents or by copyrighted interfaces, the original copyright
holder who places the Program under this License may add an explicit geographical
distribution limitation excluding those countries, so that distribution is
permitted only in or among countries not thus excluded. In such case, this License
incorporates the limitation as if written in the body of this License.
<P></P>
<LI> The Free Software Foundation may publish revised and/or new versions of the
General Public License from time to time. Such new versions will be similar in
spirit to the present version, but may differ in detail to address new problems
or concerns.
<P></P>
</OL>Each version is given a distinguishing version number. If the Program
specifies a version number of this License which applies to it and `any later version', you have the option of following the terms and conditions either of that
version or of any later version published by the Free Software Foundation. If the
Program does not specify a version number of this License, you may choose any
version ever published by the Free Software Foundation.
<P></P>
<OL><LI> If you wish to incorporate parts of the Program into other free programs whose
distribution conditions are different, write to the author to ask for
permission. For software which is copyrighted by the Free Software Foundation, write to
the Free Software Foundation; we sometimes make exceptions for this. Our
decision will be guided by the two goals of preserving the free status of all
derivatives of our free software and of promoting the sharing and reuse of software
generally.
<P></P>
</OL>NO WARRANTY
<P></P>
<OL><LI> BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE
PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED
IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM `AS IS' WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL
NECESSARY SERVICING, REPAIR OR CORRECTION.
<P></P>
<LI> IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY
COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE
PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL,
SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR
INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF
THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER
PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
<P></P>
</OL>END OF TERMS AND CONDITIONS
<P></P>
<B>How to Apply These Terms to Your New Programs
<P></P>
</B>If you develop a new program, and you want it to be of the greatest possible
use to the public, the best way to achieve this is to make it free software
which everyone can redistribute and change under these terms.
<P></P>
To do so, attach the following notices to the program. It is safest to attach
them to the start of each source file to most effectively convey the exclusion
of warranty; and each file should have at least the `copyright' line and a pointer to where the full notice is found.
<P></P>
<I>one line for the program's name and a brief idea of what it does.
<BR></I>Copyright (C) 19<I>yy</I> <I>name of author</I>
<BR>
<BR>This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.
<BR>
<BR>This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
<BR>
<BR>You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA.
<P></P>
Also add information on how to contact you by electronic and paper mail.
<P></P>
If the program is interactive, make it output a short notice like the
following example when it starts in an interactive mode:
<P></P>
Gnomovision version 69, Copyright (C) 19yy name of author Gnomovision comes
with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain
conditions; type `show c' for details.
<P></P>
The hypothetical commands <B>show w</B> and <B>show c</B> should show the appropriate parts of the General Public License. Of course,
the commands you use may be called something other than show w and show c; they can be mouse clicks or menu items—whatever suits your program.
<P></P>
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a `copyright disclaimer' for the program, if necessary. The following is a sample (when copying, alter
the names).
<P></P>
Yoyodyne, Inc., hereby disclaims all copyright interest in the program `Gnomovision' (which makes passes at compilers) written by James Hacker.
<BR>
<BR>signature of Ty Coon, 1 April 1989
<BR>Ty Coon, President of Vice
<P></P>
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may consider
it more useful to permit linking proprietary applications with the library. If
this is what you want to do, use the GNU Library General Public License instead of this License.
<P></P>
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