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<h1>Table of Contents</h1>
<ul>
 <li><a href="#SEC1" name="TOC1">GNU GENERAL PUBLIC LICENSE</a></li>
 <ul>
  <li><a href="#SEC2" name="TOC2">Preamble</a></li>
  <li><a href="#SEC3" name="TOC3">TERMS AND CONDITIONS FOR COPYING, 
   DISTRIBUTION AND MODIFICATION</a></li>
  <li><a href="#SEC4" name="TOC4">How to Apply These Terms to Your New
   Programs</a></li>
 </ul>
</ul>
<hr>
<h1><a href="#TOC1" name="SEC1">GNU GENERAL PUBLIC LICENSE</a></h1>
<blockquote>
 <p>Version 2, June 1991</p>
 <p>Copyright (C) 1989, 1991 Free Software Foundation, Inc.<br>
  59 Temple Place - Suite 330,<br>
  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>
</blockquote>
<h2><a href="#TOC2" name="SEC2">Preamble</a></h2>
<blockquote>
 <p>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.</p>
 <p>The precise terms and conditions for copying, distribution and modification
  follow.</p>
</blockquote>
<h2><a href="#TOC3" name="SEC3">TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION
 AND MODIFICATION</a></h2>
<blockquote>
 <p><strong>0.</strong> 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 &quot;Program&quot;,
  below, refers to any such program or work, and a &quot;work based on the
  Program&quot; 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
  &quot;modification&quot;.) Each licensee is addressed as &quot;you&quot;.</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><strong>1.</strong> 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>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><strong>2.</strong> 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>
 <blockquote>
  <p><strong>a)</strong> You must cause the modified files to carry prominent
   notices stating that you changed the files and the date of any change.</p>
  <p><strong>b)</strong> 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><strong>c)</strong> 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>
 </blockquote>
 <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><strong>3.</strong> 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>
 <blockquote>
  <p><strong>a)</strong> 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><strong>b)</strong> 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><strong>c)</strong> 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>
 </blockquote>
 <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><strong>4.</strong> 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><strong>5.</strong> 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><strong>6.</strong> 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.</p>
 <p><strong>7.</strong> 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>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><strong>8.</strong> 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><strong>9.</strong> 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>Each version is given a distinguishing version number. If the Program
  specifies a version number of this License which applies to it and &quot;any
  later version&quot;, 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><strong>10.</strong> 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><strong>NO WARRANTY</strong></p>
 <p><strong>11.</strong> 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 &quot;AS IS&quot; 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><strong>12.</strong> 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>
</blockquote>
<h2>END OF TERMS AND CONDITIONS</h2>
<h2><a href="#TOC4" name="SEC4">How to Apply These Terms to Your New Programs</a></h2>
<blockquote>
 <p>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
  &quot;copyright&quot; line and a pointer to where the full notice is found.</p>
 <blockquote>
  <p><var>one line to give the program's name and an idea of what it does.</var><br>
   Copyright (C) <var>yyyy</var> <var>name of author</var></p>
  <p>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.</p>
  <p>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.</p>
  <p>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>
 </blockquote>
 <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 this when
  it starts in an interactive mode:</p>
 <blockquote>
  <p><var>Gnomovision</var> version <var>69</var>, Copyright (C) <var>year</var> <var>name of author</var></p>
  <p><var>Gnomovision</var> comes with ABSOLUTELY NO WARRANTY; for details
   type `<samp>show w</samp>'. This is free software, and you are welcome
   to redistribute it under certain conditions; type `<samp>show c</samp>'
   for details.</p>
 </blockquote>
 <p>The hypothetical commands `<samp>show w</samp>' and `<samp>show c</samp>'
  should show the appropriate parts of the General Public License. Of course,
  the commands you use may be called something other than `<samp>show w</samp>'
  and `<samp>show c</samp>'; they could even 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 &quot;copyright disclaimer&quot; for the program, if
  necessary. Here is a sample; alter the names:</p>
 <blockquote>
  <p><var>Yoyodyne, Inc.</var>, hereby disclaims all copyright
   interest in the program `<var>Gnomovision</var>'
   (which makes passes at compilers) written 
   by <var>James Hacker</var>.</p>
  <p><var>signature of Ty Coon</var>, <var>1 April 1989</var></p>
  <p><var>Ty Coon</var>, President of <var>Vice</var></p>
 </blockquote>
 <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>
</blockquote>
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