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418 lines
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<?xml version="1.0" encoding="iso-8859-1"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
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<head>
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<title>GNU General Public License</title>
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<style type="text/css">
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html, body
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{
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background-color: #FFFFFF;
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color: #000000;
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}
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</style>
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</head>
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<body>
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<h1>GNU General Public License</h1>
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<p>Version 2, June 1991</p>
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<pre>
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Copyright (C) 1989, 1991 Free Software Foundation, Inc.
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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Everyone is permitted to copy and distribute verbatim copies
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of this license document, but changing it is not allowed.
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</pre>
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<h2>Preamble</h2>
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<p>The licenses for most software are designed to take away
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your freedom to share and change it. By contrast, the GNU
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General Public License is intended to guarantee your freedom
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to share and change free software--to make sure the software
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is free for all its users. This General Public License
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applies to most of the Free Software Foundation's
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software and to any other program whose authors commit to
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using it. (Some other Free Software Foundation software is
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covered by the GNU Library General Public License instead.)
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You can apply it to your programs, too.</p>
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<p>When we speak of free software, we are referring to
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freedom, not price. Our General Public Licenses are designed
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to make sure that you have the freedom to distribute copies
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of free software (and charge for this service if you wish),
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that you receive source code or can get it if you want it,
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that you can change the software or use pieces of it in new
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free programs; and that you know you can do these things.</p>
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<p>To protect your rights, we need to make restrictions that
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forbid anyone to deny you these rights or to ask you to
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surrender the rights. These restrictions translate to certain
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responsibilities for you if you distribute copies of the
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software, or if you modify it.</p>
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<p>For example, if you distribute copies of such a program,
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whether gratis or for a fee, you must give the recipients all
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the rights that you have. You must make sure that they, too,
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receive or can get the source code. And you must show them
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these terms so they know their rights.</p>
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<p>We protect your rights with two steps: (1) copyright the
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software, and (2) offer you this license which gives you
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legal permission to copy, distribute and/or modify the
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software.</p>
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<p>Also, for each author's protection and ours, we want
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to make certain that everyone understands that there is no
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warranty for this free software. If the software is modified
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by someone else and passed on, we want its recipients to know
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that what they have is not the original, so that any problems
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introduced by others will not reflect on the original
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authors' reputations.</p>
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<p>Finally, any free program is threatened constantly by
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software patents. We wish to avoid the danger that
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redistributors of a free program will individually obtain
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patent licenses, in effect making the program proprietary. To
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prevent this, we have made it clear that any patent must be
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licensed for everyone's free use or not licensed at
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all.</p>
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<p>The precise terms and conditions for copying, distribution
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and modification follow.</p>
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<h2>TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND
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MODIFICATION</h2>
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<p><strong>0.</strong> This License applies to any program or
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other work which contains a notice placed by the copyright
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holder saying it may be distributed under the terms of this
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General Public License. The "Program", below,
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refers to any such program or work, and a "work based on
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the Program" means either the Program or any derivative
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work under copyright law: that is to say, a work containing
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the Program or a portion of it, either verbatim or with
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modifications and/or translated into another language.
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(Hereinafter, translation is included without limitation in
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the term "modification".) Each licensee is
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addressed as "you".</p>
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<p>Activities other than copying, distribution and
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modification are not covered by this License; they are
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outside its scope. The act of running the Program is not
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restricted, and the output from the Program is covered only
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if its contents constitute a work based on the Program
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(independent of having been made by running the Program).
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Whether that is true depends on what the Program does.</p>
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<p><strong>1.</strong> You may copy and distribute verbatim
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copies of the Program's source code as you receive it, in
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any medium, provided that you conspicuously and appropriately
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publish on each copy an appropriate copyright notice and
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disclaimer of warranty; keep intact all the notices that
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refer to this License and to the absence of any warranty; and
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give any other recipients of the Program a copy of this
|
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License along with the Program.</p>
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<p>You may charge a fee for the physical act of transferring
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a copy, and you may at your option offer warranty protection
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in exchange for a fee.</p>
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<p><strong>2.</strong> You may modify your copy or copies of
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the Program or any portion of it, thus forming a work based
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on the Program, and copy and distribute such modifications or
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work under the terms of Section 1 above, provided that you
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also meet all of these conditions:</p>
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<ul>
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<li><strong>a)</strong> You must cause the modified files
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to carry prominent notices stating that you changed the
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files and the date of any change.</li>
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<li><strong>b)</strong> You must cause any work that you
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distribute or publish, that in whole or in part contains or
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is derived from the Program or any part thereof, to be
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licensed as a whole at no charge to all third parties under
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the terms of this License.</li>
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<li><strong>c)</strong> If the modified program normally
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reads commands interactively when run, you must cause it,
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when started running for such interactive use in the most
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ordinary way, to print or display an announcement including
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an appropriate copyright notice and a notice that there is
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no warranty (or else, saying that you provide a warranty)
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and that users may redistribute the program under these
|
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conditions, and telling the user how to view a copy of this
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License. (Exception: if the Program itself is interactive
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but does not normally print such an announcement, your work
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based on the Program is not required to print an
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announcement.)</li>
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</ul>
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<p>These requirements apply to the modified work as a whole.
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If identifiable sections of that work are not derived from
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the Program, and can be reasonably considered independent and
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separate works in themselves, then this License, and its
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terms, do not apply to those sections when you distribute
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them as separate works. But when you distribute the same
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sections as part of a whole which is a work based on the
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Program, the distribution of the whole must be on the terms
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of this License, whose permissions for other licensees extend
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to the entire whole, and thus to each and every part
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regardless of who wrote it.</p>
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<p>Thus, it is not the intent of this section to claim rights
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or contest your rights to work written entirely by you;
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rather, the intent is to exercise the right to control the
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distribution of derivative or collective works based on the
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Program.</p>
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<p>In addition, mere aggregation of another work not based on
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the Program with the Program (or with a work based on the
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Program) on a volume of a storage or distribution medium does
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not bring the other work under the scope of this License.</p>
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<p><strong>3.</strong> You may copy and distribute the
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Program (or a work based on it, under Section 2) in object
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code or executable form under the terms of Sections 1 and 2
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above provided that you also do one of the following:
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</p>
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<ul>
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<li><strong>a)</strong> Accompany it with the complete
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corresponding machine-readable source code, which must be
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distributed under the terms of Sections 1 and 2 above on a
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medium customarily used for software interchange; or,</li>
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<li><strong>b)</strong> Accompany it with a written offer,
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valid for at least three years, to give any third party,
|
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for a charge no more than your cost of physically
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performing source distribution, a complete machine-readable
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copy of the corresponding source code, to be distributed
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under the terms of Sections 1 and 2 above on a medium
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customarily used for software interchange; or,</li>
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<li><strong>c)</strong> Accompany it with the information
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you received as to the offer to distribute corresponding
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source code. (This alternative is allowed only for
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noncommercial distribution and only if you received the
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program in object code or executable form with such an
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offer, in accord with Subsection b above.)</li>
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</ul>
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<p>The source code for a work means the preferred form of the
|
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work for making modifications to it. For an executable work,
|
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complete source code means all the source code for all
|
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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
|
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anything that is normally distributed (in either source or
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binary form) with the major components (compiler, kernel, and
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so on) of the operating system on which the executable runs,
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unless that component itself accompanies the executable.</p>
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<p>If distribution of executable or object code is made by
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offering access to copy from a designated place, then
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offering equivalent access to copy the source code from the
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same place counts as distribution of the source code, even
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though third parties are not compelled to copy the source
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along with the object code.</p>
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<p><strong>4.</strong> You may not copy, modify, sublicense,
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or distribute the Program except as expressly provided under
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this License. Any attempt otherwise to copy, modify,
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sublicense or distribute the Program is void, and will
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automatically terminate your rights under this License.
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However, parties who have received copies, or rights, from
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you under this License will not have their licenses
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terminated so long as such parties remain in full
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compliance.</p>
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<p><strong>5.</strong> You are not required to accept this
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License, since you have not signed it. However, nothing else
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grants you permission to modify or distribute the Program or
|
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its derivative works. These actions are prohibited by law if
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you do not accept this License. Therefore, by modifying or
|
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distributing the Program (or any work based on the Program),
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you indicate your acceptance of this License to do so, and
|
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all its terms and conditions for copying, distributing or
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modifying the Program or works based on it.</p>
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<p><strong>6.</strong> Each time you redistribute the Program
|
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(or any work based on the Program), the recipient
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automatically receives a license from the original licensor
|
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to copy, distribute or modify the Program subject to these
|
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terms and conditions. You may not impose any further
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restrictions on the recipients' exercise of the rights
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granted herein. You are not responsible for enforcing
|
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compliance by third parties to this License.</p>
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<p><strong>7.</strong> If, as a consequence of a court
|
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judgment or allegation of patent infringement or for any
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other reason (not limited to patent issues), conditions are
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imposed on you (whether by court order, agreement or
|
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otherwise) that contradict the conditions of this License,
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they do not excuse you from the conditions of this License.
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If you cannot distribute so as to satisfy simultaneously your
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obligations under this License and any other pertinent
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obligations, then as a consequence you may not distribute the
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Program at all. For example, if a patent license would not
|
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permit royalty-free redistribution of the Program by all
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those who receive copies directly or indirectly through you,
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then the only way you could satisfy both it and this License
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would be to refrain entirely from distribution of the
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Program.</p>
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<p>If any portion of this section is held invalid or
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unenforceable under any particular circumstance, the balance
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of the section is intended to apply and the section as a
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whole is intended to apply in other circumstances.</p>
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<p>It is not the purpose of this section to induce you to
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infringe any patents or other property right claims or to
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contest validity of any such claims; this section has the
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sole purpose of protecting the integrity of the free software
|
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distribution system, which is implemented by public license
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practices. Many people have made generous contributions to
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the wide range of software distributed through that system in
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reliance on consistent application of that system; it is up
|
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to the author/donor to decide if he or she is willing to
|
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distribute software through any other system and a licensee
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cannot impose that choice.</p>
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<p>This section is intended to make thoroughly clear what is
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believed to be a consequence of the rest of this License.</p>
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<p><strong>8.</strong> If the distribution and/or use of the
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Program is restricted in certain countries either by patents
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or by copyrighted interfaces, the original copyright holder
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who places the Program under this License may add an explicit
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geographical distribution limitation excluding those
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countries, so that distribution is permitted only in or among
|
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countries not thus excluded. In such case, this License
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incorporates the limitation as if written in the body of this
|
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License.</p>
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<p><strong>9.</strong> The Free Software Foundation may
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publish revised and/or new versions of the General Public
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License from time to time. Such new versions will be similar
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in spirit to the present version, but may differ in detail to
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address new problems or concerns.</p>
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<p>Each version is given a distinguishing version number. If
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the Program specifies a version number of this License which
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applies to it and "any later version", you have the
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option of following the terms and conditions either of that
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version or of any later version published by the Free
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Software Foundation. If the Program does not specify a
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version number of this License, you may choose any version
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ever published by the Free Software Foundation.</p>
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<p><strong>10.</strong> If you wish to incorporate parts of
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the Program into other free programs whose distribution
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conditions are different, write to the author to ask for
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permission. For software which is copyrighted by the Free
|
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Software Foundation, write to the Free Software Foundation;
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we sometimes make exceptions for this. Our decision will be
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guided by the two goals of preserving the free status of all
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derivatives of our free software and of promoting the sharing
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and reuse of software generally.</p>
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<p><strong>NO WARRANTY</strong></p>
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<p><strong>11.</strong> BECAUSE THE PROGRAM IS LICENSED FREE
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OF CHARGE, THERE IS NO WARRANTY FOR THE PROGRAM, TO THE
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EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE
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STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
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PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY
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KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED
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TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
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PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM
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PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY
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SERVICING, REPAIR OR CORRECTION.</p>
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<p><strong>12.</strong> IN NO EVENT UNLESS REQUIRED BY
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APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT
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HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE
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THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
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INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL
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DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
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PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA
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BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
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PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
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PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN
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ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.</p>
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<h2>END OF TERMS AND CONDITIONS</h2>
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<h2>How to Apply These Terms to Your New Programs</h2>
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<p>If you develop a new program, and you want it to be of the greatest
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possible use to the public, the best way to achieve this is to make it
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free software which everyone can redistribute and change under these
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terms.</p>
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<p>To do so, attach the following notices to the program. It is safest
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to attach them to the start of each source file to most effectively
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convey the exclusion of warranty; and each file should have at least
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the "copyright" line and a pointer to where the full notice is found.</p>
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<pre>
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<one line to give the program's name and a brief idea of what it does.>
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Copyright (C) <year> <name of author>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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</pre>
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<p>Also add information on how to contact you by electronic and paper mail.</p>
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<p>If the program is interactive, make it output a short notice like this
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when it starts in an interactive mode:</p>
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<pre>
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Gnomovision version 69, Copyright (C) year name of author
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Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
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This is free software, and you are welcome to redistribute it
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under certain conditions; type `show c' for details.
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</pre>
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<p>The hypothetical commands `show w' and `show c' should show the appropriate
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parts of the General Public License. Of course, the commands you use may
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be called something other than `show w' and `show c'; they could even be
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mouse-clicks or menu items--whatever suits your program.</p>
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<p>You should also get your employer (if you work as a programmer) or your
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school, if any, to sign a "copyright disclaimer" for the program, if
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necessary. Here is a sample; alter the names:</p>
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<pre>
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Yoyodyne, Inc., hereby disclaims all copyright interest in the program
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`Gnomovision' (which makes passes at compilers) written by James Hacker.
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<signature of Ty Coon>, 1 April 1989
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Ty Coon, President of Vice
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</pre>
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<p>This General Public License does not permit incorporating your program into
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proprietary programs. If your program is a subroutine library, you may
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consider it more useful to permit linking proprietary applications with the
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library. If this is what you want to do, use the GNU Library General
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Public License instead of this License.</p>
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</body>
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</html> |