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					 | 
				
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                    GNU GENERAL PUBLIC LICENSE | 
				
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                       Version 2, June 1991 | 
				
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 | 
				
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 Copyright (C) 1989, 1991 Free Software Foundation, Inc., | 
				
			||||
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | 
				
			||||
 Everyone is permitted to copy and distribute verbatim copies | 
				
			||||
 of this license document, but changing it is not allowed. | 
				
			||||
 | 
				
			||||
                            Preamble | 
				
			||||
 | 
				
			||||
  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 Lesser General Public License instead.)  You can apply it to | 
				
			||||
your programs, too. | 
				
			||||
 | 
				
			||||
  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. | 
				
			||||
 | 
				
			||||
  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. | 
				
			||||
 | 
				
			||||
  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. | 
				
			||||
 | 
				
			||||
  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. | 
				
			||||
 | 
				
			||||
  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. | 
				
			||||
 | 
				
			||||
  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. | 
				
			||||
 | 
				
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                    GNU GENERAL PUBLIC LICENSE | 
				
			||||
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION | 
				
			||||
 | 
				
			||||
  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". | 
				
			||||
 | 
				
			||||
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. | 
				
			||||
 | 
				
			||||
  1. 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. | 
				
			||||
 | 
				
			||||
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. | 
				
			||||
 | 
				
			||||
  2. 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: | 
				
			||||
 | 
				
			||||
    a) You must cause the modified files to carry prominent notices | 
				
			||||
    stating that you changed the files and the date of any change. | 
				
			||||
 | 
				
			||||
    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. | 
				
			||||
 | 
				
			||||
    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.) | 
				
			||||
 | 
				
			||||
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. | 
				
			||||
 | 
				
			||||
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. | 
				
			||||
 | 
				
			||||
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. | 
				
			||||
 | 
				
			||||
  3. 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: | 
				
			||||
 | 
				
			||||
    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, | 
				
			||||
 | 
				
			||||
    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, | 
				
			||||
 | 
				
			||||
    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.) | 
				
			||||
 | 
				
			||||
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. | 
				
			||||
 | 
				
			||||
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. | 
				
			||||
 | 
				
			||||
  4. 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. | 
				
			||||
 | 
				
			||||
  5. 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. | 
				
			||||
 | 
				
			||||
  6. 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. | 
				
			||||
You are not responsible for enforcing compliance by third parties to | 
				
			||||
this License. | 
				
			||||
 | 
				
			||||
  7. 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. | 
				
			||||
 | 
				
			||||
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. | 
				
			||||
 | 
				
			||||
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. | 
				
			||||
 | 
				
			||||
This section is intended to make thoroughly clear what is believed to | 
				
			||||
be a consequence of the rest of this License. | 
				
			||||
 | 
				
			||||
  8. 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. | 
				
			||||
 | 
				
			||||
  9. 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. | 
				
			||||
 | 
				
			||||
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. | 
				
			||||
 | 
				
			||||
  10. 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. | 
				
			||||
 | 
				
			||||
                            NO WARRANTY | 
				
			||||
 | 
				
			||||
  11. 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. | 
				
			||||
 | 
				
			||||
  12. 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. | 
				
			||||
 | 
				
			||||
                     END OF TERMS AND CONDITIONS | 
				
			||||
 | 
				
			||||
            How to Apply These Terms to Your New Programs | 
				
			||||
 | 
				
			||||
  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. | 
				
			||||
 | 
				
			||||
  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. | 
				
			||||
 | 
				
			||||
    <one line to give the program's name and a brief idea of what it does.> | 
				
			||||
    Copyright (C) <year>  <name of author> | 
				
			||||
 | 
				
			||||
    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. | 
				
			||||
 | 
				
			||||
    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. | 
				
			||||
 | 
				
			||||
    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., | 
				
			||||
    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | 
				
			||||
 | 
				
			||||
Also add information on how to contact you by electronic and paper mail. | 
				
			||||
 | 
				
			||||
If the program is interactive, make it output a short notice like this | 
				
			||||
when it starts in an interactive mode: | 
				
			||||
 | 
				
			||||
    Gnomovision version 69, Copyright (C) year 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. | 
				
			||||
 | 
				
			||||
The hypothetical commands `show w' and `show c' 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 could even be | 
				
			||||
mouse-clicks or menu items--whatever suits your program. | 
				
			||||
 | 
				
			||||
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.  Here is a sample; alter the names: | 
				
			||||
 | 
				
			||||
  Yoyodyne, Inc., hereby disclaims all copyright interest in the program | 
				
			||||
  `Gnomovision' (which makes passes at compilers) written by James Hacker. | 
				
			||||
 | 
				
			||||
  <signature of Ty Coon>, 1 April 1989 | 
				
			||||
  Ty Coon, President of Vice | 
				
			||||
 | 
				
			||||
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 Lesser General | 
				
			||||
Public License instead of this License. | 
				
			||||
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