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><H1
><A
NAME="GPL"
>Appendix A. GNU General Public License</A
></H1
><P
>Version 2, June 1991</P
><P
>Copyright (C) 1989, 1991 Free Software Foundation, Inc.</P
><P
>675 Mass Ave, Cambridge, MA 02139, USA</P
><P
>      Everyone is permitted to copy and distribute verbatim copies
      of this license document, but changing it is not allowed.</P
><H2
CLASS="BRIDGEHEAD"
>Preamble</H2
><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 re-distributors 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
><H2
CLASS="BRIDGEHEAD"
>      TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
    </H2
><P
></P
><OL
TYPE="1"
><LI
><P
>      This License applies to any program or other work which contains
      a notice placed by the copyright holder saying it may be distributed
      under the terms of this General Public License.  The "Program", below,
      refers to any such program or work, and a "work based on the Program"
      means either the Program or any derivative work under copyright law:
      that is to say, a work containing the Program or a portion of it,
      either verbatim or with modifications and/or translated into another
      language.  (Hereinafter, translation is included without limitation in
      the term "modification".)  Each licensee is addressed as "you".</P
><P
>      Activities other than copying, distribution and modification are not
      covered by this License; they are outside its scope.  The act of
      running the Program is not restricted, and the output from the Program
      is covered only if its contents constitute a work based on the
      Program (independent of having been made by running the Program).
      Whether that is true depends on what the Program does.</P
></LI
><LI
><P
>      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
></LI
><LI
><P
>      You may modify your copy or copies of the Program or any portion
      of it, thus forming a work based on the Program, and copy and
      distribute such modifications or work under the terms of Section 1
      above, provided that you also meet all of these conditions:</P
><P
></P
><OL
TYPE="a"
><LI
><P
>	  You must cause the modified files to carry prominent notices
	  stating that you changed the files and the date of any 
	  change.</P
></LI
><LI
><P
>	  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
></LI
><LI
><P
>	  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
></LI
></OL
><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
></LI
><LI
><P
>      You may copy and distribute the Program (or a work based on it,
      under Section 2) in object code or executable form under the terms of
      Sections 1 and 2 above provided that you also do one of the 
      following:</P
><P
></P
><OL
TYPE="a"
><LI
><P
>	  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
></LI
><LI
><P
>	  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
></LI
><LI
><P
>	  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
></LI
></OL
><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
></LI
><LI
><P
>      You may not copy, modify, sub-license, or distribute the Program
      except as expressly provided under this License.  Any attempt
      otherwise to copy, modify, sub-license 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
></LI
><LI
><P
>      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
></LI
><LI
><P
>      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
></LI
><LI
><P
>      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
></LI
><LI
><P
>      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
></LI
><LI
><P
>      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 "any
      later version", you have the option of following the terms and 
      conditions either of that version or of any later version published by
      the Free Software Foundation.  If the Program does not specify a 
      version number of this License, you may choose any version ever 
      published by the Free Software Foundation.</P
></LI
><LI
><P
>      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
><H2
CLASS="BRIDGEHEAD"
>      NO WARRANTY</H2
></LI
><LI
><P
>      BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO 
      WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  
      EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR 
      OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND,
      EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
      WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  
      THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS 
      WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 
      ALL NECESSARY SERVICING, REPAIR OR CORRECTION.</P
></LI
><LI
><P
>      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
></LI
></OL
><H2
CLASS="BRIDGEHEAD"
>      END OF TERMS AND CONDITIONS</H2
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