                        GNU GENERAL PUBLIC LICENSE
                           Version 2, June 1991

         Copyright (C) 1989, 1991 Free Software Foundation, Inc.
         59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

       Everyone is permitted to copy and distribute verbatim copies
        of this license document, but changing it is not allowed.

                                 Preamble

The licenses for  most software are designed to take  away your freedom to
share  and change  it.  By  contrast, the  GNU General  Public  License is
intended to guarantee your freedom  to share and change free software---to
make sure  the software is  free for all  its users.  This  General Public
License applies to most of  the Free Software Foundation's software and to
any  other program whose  authors commit  to using  it.  (Some  other Free
Software Foundation software is covered  by the GNU Library General Public
License instead.)  You can apply it to your programs, too.

When we  speak of free software,  we are referring to  freedom, not price.
Our General  Public Licenses are designed  to make sure that  you have the
freedom to distribute copies of free software (and charge for this service
if you wish), that  you receive source code or can get  it if you want it,
that you can change the software or use pieces of it in new free programs;
and that you know you can do these things.

To protect your rights, we need to make restrictions that forbid anyone to
deny  you these  rights or  to  ask you  to surrender  the rights.   These
restrictions  translate  to  certain   responsibilities  for  you  if  you
distribute copies of the software, or if you modify it.

For example, if you distribute copies of such a program, whether gratis or
for a fee, you must give the recipients all the rights that you have.  You
must make  sure that they, too, receive  or can get the  source code.  And
you must show them these terms so they know their rights.

We protect your rights with two steps: (1) copyright the software, and (2)
offer  you  this  license  which  gives  you  legal  permission  to  copy,
distribute and/or modify the software.

Also, for each author's protection and  ours, we want to make certain that
everyone understands that there is no warranty for this free software.  If
the  software is  modified by  someone  else and  passed on,  we want  its
recipients to  know that what they have  is not the original,  so that any
problems introduced  by others will  not reflect on the  original authors'
reputations.

Finally, any  free program is  threatened constantly by  software patents.
We wish  to avoid the  danger that redistributors  of a free  program will
individually  obtain  patent  licenses,   in  effect  making  the  program
proprietary.  To prevent this, we have  made it clear that any patent must
be licensed for everyone's free use or not licensed at all.

The   precise  terms   and  conditions   for  copying,   distribution  and
modification follow.


                        GNU GENERAL PUBLIC LICENSE
     TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

0.  This License  applies to  any program or  other work which  contains a
    notice placed  by the  copyright holder saying  it may  be distributed
    under the terms of this General Public License.  The "Program", below,
    refers to any such program or  work, and a "work based on the Program"
    means either the  Program or any derivative work  under copyright law:
    that is  to say,  a work containing  the Program  or a portion  of it,
    either verbatim  or with modifications and/or  translated into another
    language.  (Hereinafter, translation is included without limitation in
    the term "modification".)  Each licensee is addressed as "you".

    Activities other  than copying, distribution and  modification are not
    covered  by this  License; they  are outside  its scope.   The  act of
    running the Program is not restricted, and the output from the Program
    is covered only if its contents constitute a work based on the Program
    (independent  of having been  made by  running the  Program).  Whether
    that is true depends on what the Program does.

1.  You may  copy and distribute  verbatim copies of the  Program's source
    code as you receive it, in any medium, provided that you conspicuously
    and appropriately publish on each copy an appropriate copyright notice
    and disclaimer of warranty; keep  intact all the notices that refer to
    this License  and to the absence  of any warranty; and  give any other
    recipients  of the  Program  a copy  of  this License  along with  the
    Program.

    You may charge a fee for  the physical act of transferring a copy, and
    you may  at your  option offer warranty  protection in exchange  for a
    fee.

2.  You may  modify your copy or copies  of the Program or  any portion of
    it, thus forming a work based  on the Program, and copy and distribute
    such  modifications  or work  under  the  terms  of Section  1  above,
    provided that you also meet all of these conditions:

    a) You must  cause  the  modified files  to  carry  prominent  notices
       stating that you changed the files and the date of any change.

    b) You  must cause any  work that you  distribute or publish,  that in
       whole or  in part contains  or is derived  from the Program  or any
       part thereof, to  be licensed as a whole at no  charge to all third
       parties under the terms of this License.

    c) If the modified  program normally reads commands interactively when
       run, you must  cause it, when started running  for such interactive
       use in the  most ordinary way, to print  or display an announcement
       including an  appropriate copyright notice and a  notice that there
       is no  warranty (or else, saying  that you provide  a warranty) and
       that users may redistribute the program under these conditions, and
       telling the user  how to view a copy  of this License.  (Exception:
       if the  Program itself is  interactive but does not  normally print
       such  an  announcement, your  work  based  on  the Program  is  not
       required to print an announcement.)

    These  requirements  apply  to  the  modified work  as  a  whole.   If
    identifiable sections of  that work are not derived  from the Program,
    and  can be reasonably  considered independent  and separate  works in
    themselves, then  this License, and its  terms, do not  apply to those
    sections when  you distribute  them as separate  works.  But  when you
    distribute the same sections as part  of a whole which is a work based
    on the Program, the distribution of  the whole must be on the terms of
    this  License, whose  permissions for  other licensees  extend  to the
    entire whole, and thus to each  and every part regardless of who wrote
    it.

    Thus, it is not the intent  of this section to claim rights or contest
    your rights to work written entirely  by you; rather, the intent is to
    exercise  the  right to  control  the  distribution  of derivative  or
    collective works based on the Program.

    In addition, mere aggregation of another work not based on the Program
    with the Program (or with a work  based on the Program) on a volume of
    a storage or  distribution medium does not bring  the other work under
    the scope of this License.

3.  You may copy and distribute the  Program (or a work based on it, under
    Section  2) in  object  code or  executable  form under  the terms  of
    Sections 1 and 2 above provided that you also do one of the following:

    a) Accompany  it  with  the  complete  corresponding  machine-readable
       source code, which must be  distributed under the terms of Sections
       1  and  2   above  on  a  medium  customarily   used  for  software
       interchange; or,

    b) Accompany it with a written  offer, valid for at least three years,
       to give  any third party,  for a charge  no more than your  cost of
       physically    performing    source    distribution,   a    complete
       machine-readable  copy  of the  corresponding  source  code, to  be
       distributed under the  terms of Sections 1 and 2  above on a medium
       customarily used for software interchange; or,

    c) Accompany it  with the information you received as  to the offer to
       distribute corresponding source code.  (This alternative is allowed
       only for  noncommercial distribution and  only if you  received the
       program in  object code or executable  form with such  an offer, in
       accord with Subsection b above.)

    The source  code for a work means  the preferred form of  the work for
    making modifications  to it.  For an executable  work, complete source
    code means all  the source code for all modules  it contains, plus any
    associated  interface  definition  files,  plus the  scripts  used  to
    control compilation and installation of the executable.  However, as a
    special  exception,  the  source  code distributed  need  not  include
    anything  that is  normally distributed  (in either  source  or binary
    form) with the  major components (compiler, kernel, and  so on) of the
    operating system  on which the executable runs,  unless that component
    itself accompanies the executable.

    If  distribution of  executable or  object  code is  made by  offering
    access  to copy  from  a designated  place,  then offering  equivalent
    access  to  copy  the  source  code  from the  same  place  counts  as
    distribution of  the source  code, even though  third parties  are not
    compelled to copy the source along with the object code.

4.  You may not copy, modify, sublicense, or distribute the Program except
    as expressly  provided under this  License.  Any attempt  otherwise to
    copy, modify, sublicense  or distribute the Program is  void, and will
    automatically  terminate  your rights  under  this License.   However,
    parties  who have  received copies,  or  rights, from  you under  this
    License  will not  have  their  licenses terminated  so  long as  such
    parties remain in full compliance.

5.  You are not required to accept this License, since you have not signed
    it.   However,  nothing  else  grants  you  permission  to  modify  or
    distribute  the Program or  its derivative  works.  These  actions are
    prohibited by  law if you do  not accept this  License.  Therefore, by
    modifying  or distributing  the  Program  (or any  work  based on  the
    Program), you indicate  your acceptance of this License  to do so, and
    all its  terms and conditions  for copying, distributing  or modifying
    the Program or works based on it.

6.  Each  time you  redistribute the  Program (or  any work  based  on the
    Program),  the recipient  automatically  receives a  license from  the
    original licensor to copy, distribute or modify the Program subject to
    these  terms   and  conditions.   You  may  not   impose  any  further
    restrictions on the recipients' exercise of the rights granted herein.
    You are not  responsible for enforcing compliance by  third parties to
    this License.

7.  If,  as a  consequence of  a court  judgment or  allegation  of patent
    infringement or for  any other reason (not limited  to patent issues),
    conditions are  imposed on you  (whether by court order,  agreement or
    otherwise) that contradict the conditions of this License, they do not
    excuse  you  from the  conditions  of  this  License.  If  you  cannot
    distribute so as to satisfy simultaneously your obligations under this
    License and any other pertinent obligations, then as a consequence you
    may  not distribute  the Program  at all.   For example,  if  a patent
    license would not permit royalty-free redistribution of the Program by
    all those who receive copies  directly or indirectly through you, then
    the only  way you could satisfy both  it and this License  would be to
    refrain entirely from distribution of the Program.

    If any portion of this  section is held invalid or unenforceable under
    any particular circumstance, the balance of the section is intended to
    apply  and the  section  as a  whole  is intended  to  apply in  other
    circumstances.

    It is  not the purpose of this  section to induce you  to infringe any
    patents or other  property right claims or to  contest validity of any
    such  claims; this  section has  the  sole purpose  of protecting  the
    integrity  of   the  free  software  distribution   system,  which  is
    implemented  by  public  license  practices.  Many  people  have  made
    generous  contributions  to the  wide  range  of software  distributed
    through  that system  in reliance  on consistent  application  of that
    system; it is up to the author/donor to decide if he or she is willing
    to distribute software through any  other system and a licensee cannot
    impose that choice.

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

8.  If the distribution and/or use of the Program is restricted in certain
    countries either by patents or by copyrighted interfaces, the original
    copyright holder who places the  Program under this License may add an
    explicit   geographical   distribution   limitation  excluding   those
    countries,  so  that  distribution  is  permitted  only  in  or  among
    countries not thus excluded.   In such case, this License incorporates
    the limitation as if written in the body of this License.

9.  The Free  Software Foundation may publish revised  and/or new versions
    of the  General Public License from  time to time.   Such new versions
    will be  similar in spirit to  the present version, but  may differ in
    detail to address new problems or concerns.

    Each version is given a distinguishing version number.  If the Program
    specifies a  version number  of this License  which applies to  it and
    "any later  version", you have the  option of following  the terms and
    conditions either of that version or of any later version published by
    the  Free Software  Foundation.  If  the  Program does  not specify  a
    version  number of  this  License,  you may  choose  any version  ever
    published by the Free Software Foundation.

10. If  you wish  to  incorporate parts  of  the Program  into other  free
    programs  whose distribution  conditions are  different, write  to the
    author to  ask for permission.   For software which is  copyrighted by
    the Free  Software Foundation, write to the  Free Software Foundation;
    we sometimes make exceptions for this.  Our decision will be guided by
    the two goals of preserving the  free status of all derivatives of our
    free  software and  of promoting  the  sharing and  reuse of  software
    generally.

                               NO WARRANTY

11. BECAUSE THE PROGRAM  IS LICENSED FREE OF CHARGE,  THERE IS NO WARRANTY
    FOR THE  PROGRAM, TO THE  EXTENT PERMITTED BY APPLICABLE  LAW.  EXCEPT
    WHEN OTHERWISE  STATED IN WRITING  THE COPYRIGHT HOLDERS  AND/OR OTHER
    PARTIES  PROVIDE THE  PROGRAM "AS  IS" WITHOUT  WARRANTY OF  ANY KIND,
    EITHER  EXPRESSED  OR IMPLIED,  INCLUDING,  BUT  NOT  LIMITED TO,  THE
    IMPLIED  WARRANTIES OF  MERCHANTABILITY AND  FITNESS FOR  A PARTICULAR
    PURPOSE.  THE  ENTIRE RISK  AS TO THE  QUALITY AND PERFORMANCE  OF THE
    PROGRAM IS WITH  YOU.  SHOULD THE PROGRAM PROVE  DEFECTIVE, YOU ASSUME
    THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.

12. IN NO EVENT UNLESS REQUIRED BY  APPLICABLE LAW OR AGREED TO IN WRITING
    WILL ANY  COPYRIGHT HOLDER, OR ANY  OTHER PARTY WHO  MAY MODIFY AND/OR
    REDISTRIBUTE  THE PROGRAM  AS PERMITTED  ABOVE, BE  LIABLE TO  YOU FOR
    DAMAGES, INCLUDING  ANY GENERAL, SPECIAL,  INCIDENTAL OR CONSEQUENTIAL
    DAMAGES  ARISING  OUT OF  THE  USE OR  INABILITY  TO  USE THE  PROGRAM
    (INCLUDING  BUT NOT LIMITED  TO LOSS  OF DATA  OR DATA  BEING RENDERED
    INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF
    THE PROGRAM TO  OPERATE WITH ANY OTHER PROGRAMS),  EVEN IF SUCH HOLDER
    OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

                     END OF TERMS AND CONDITIONS


              How to Apply These Terms to Your New Programs
              ---------------------------------------------

If  you develop  a new  program, and  you want  it to  be of  the greatest
possible use  to the public, the  best way to  achieve this is to  make it
free  software which  everyone  can redistribute  and  change under  these
terms.

To do  so, attach the following notices  to the program.  It  is safest to
attach them  to the start of  each source file to  most effectively convey
the  exclusion  of  warranty; and  each  file  should  have at  least  the
"copyright" line and a pointer to where the full notice is found.

  <one line to give the program's name and a brief idea of what it does.>
  Copyright (C) <year>,  <name of author>

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

Also add information on how to contact you by electronic and paper mail.

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

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

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

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

  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
  `Gnomovision' (which makes passes at compilers) written by James Hacker.

  <signature of Ty Coon>, 1 April 1989
  Ty Coon, President of Vice

This  General Public License  does not  permit incorporating  your program
into proprietary programs.   If your program is a  subroutine library, you
may  consider it more  useful to  permit linking  proprietary applications
with the  library.  If this is  what you want  to do, use the  GNU Library
General Public License instead of this License.
