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    <title>GNU General Public License</title>

    <bridgehead renderas="sect1">Preamble</bridgehead>

    <para>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.</para>

    <para>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.</para>

    <para>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.</para>

    <para>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.</para>

    <para>We protect your rights with two steps:</para>

    <orderedlist numeration="arabic">
        <listitem>
            <para>copyright the software, and</para>
        </listitem>

        <listitem>
            <para>offer you this license which gives you legal permission to copy,
                distribute and/or modify the software.</para>
        </listitem>
    </orderedlist>

    <para>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.</para>

    <para>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.</para>

    <para>The precise terms and conditions for copying, distribution and
        modification follow.</para>

    <bridgehead renderas="sect1">TERMS AND CONDITIONS FOR COPYING,
        DISTRIBUTION AND MODIFICATION</bridgehead>

    <bridgehead renderas="sect2">Section 0</bridgehead>

    <para>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 <quote>Program</quote>,
        below, refers to any such program or work, and a <quote>work based on the
            Program</quote> 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 <quote>modification</quote>.) Each licensee is addressed as
        <quote>you</quote>.</para>

    <para>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.</para>

    <bridgehead renderas="sect2">Section 1</bridgehead>

    <para>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.</para>

    <para>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.</para>

    <bridgehead renderas="sect2">Section 2</bridgehead>

    <para>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:</para>

    <orderedlist numeration="loweralpha">
        <listitem>
            <para>You must cause the modified files to carry prominent notices
                stating that you changed the files and the date of any change.</para>
        </listitem>

        <listitem>
            <para>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.</para>
        </listitem>

        <listitem>
            <para>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.)</para>
        </listitem>
    </orderedlist>

    <para>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.</para>

    <para>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.</para>

    <para>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.</para>

    <bridgehead renderas="sect2">Section 3</bridgehead>

    <para>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:</para>

    <orderedlist numeration="loweralpha">
        <listitem>
            <para>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,</para>
        </listitem>

        <listitem>
            <para>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,</para>
        </listitem>

        <listitem>
            <para>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.)</para>
        </listitem>
    </orderedlist>

    <para>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.</para>

    <para>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.</para>

    <para><bridgehead renderas="sect2">Section 4</bridgehead></para>

    <para>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.</para>

    <bridgehead renderas="sect2">Section 5</bridgehead>

    <para>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.</para>

    <bridgehead renderas="sect2">Section 6</bridgehead>

    <para>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.</para>

    <bridgehead renderas="sect2">Section 7</bridgehead>

    <para>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.</para>

    <para>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.</para>

    <para>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.</para>

    <para>This section is intended to make thoroughly clear what is believed
        to be a consequence of the rest of this License.</para>

    <bridgehead renderas="sect2">Section 8</bridgehead>

    <para>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.</para>

    <bridgehead renderas="sect2">Section 9</bridgehead>

    <para>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.</para>

    <para>Each version is given a distinguishing version number. If the
        Program specifies a version number of this License which applies to it and
        <quote>any later version</quote>, 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.</para>

    <bridgehead renderas="sect2">Section 10</bridgehead>

    <para>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.</para>

    <bridgehead renderas="sect2">NO WARRANTY Section 11</bridgehead>

    <para>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 <quote>AS IS</quote> 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.</para>

    <bridgehead renderas="sect2">Section 12</bridgehead>

    <para>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.</para>

    <para>END OF TERMS AND CONDITIONS</para>

    <bridgehead renderas="sect1">How to Apply These Terms to Your New
        Programs</bridgehead>

    <para>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.</para>

    <para>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
        <quote>copyright</quote> line and a pointer to where the full notice is
        found.</para>

    <para>&lt;one line to give the program's name and a brief idea of what it
        does.&gt; Copyright (C) &lt;year&gt; &lt;name of author&gt;</para>

    <para>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.</para>

    <para>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.</para>

    <para>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</para>

    <para>Also add information on how to contact you by electronic and paper
        mail.</para>

    <para>If the program is interactive, make it output a short notice like
        this when it starts in an interactive mode:</para>

    <para>Gnomovision version 69, Copyright (C) year name of author
        Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type
        <quote>show w</quote>. This is free software, and you are welcome to
        redistribute it under certain conditions; type <quote>show c</quote> for
        details.</para>

    <para>The hypothetical commands <quote>show w</quote> and <quote>show
        c</quote> should show the appropriate parts of the General Public License.
        Of course, the commands you use may be called something other than
        <quote>show w</quote> and <quote>show c</quote>; they could even be
        mouse-clicks or menu items--whatever suits your program.</para>

    <para>You should also get your employer (if you work as a programmer) or
        your school, if any, to sign a <quote>copyright disclaimer</quote> for the
        program, if necessary. Here is a sample; alter the names:</para>

    <para>Yoyodyne, Inc., hereby disclaims all copyright interest in the
        program <quote>Gnomovision</quote> (which makes passes at compilers)
        written by James Hacker.</para>

    <para>&lt;signature of Ty Coon&gt;, 1 April 1989 Ty Coon, President of
        Vice</para>

    <para>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.</para>
</appendix>