GPL(GNU)                   Free Software Foundation                   GPL(GNU)



                             GNU GENERAL PUBLIC LICENSE
                                Version 2, June 1991

       Copyright (C) 1989, 1991 Free Software Foundation, Inc.
       59 Temple Place, Suite 330, Boston, MA 02111, 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  soft-
       ware--to  make  sure the software is free for all its users.  This Gen-
       eral 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 pro-
       grams, 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 ser-
       vice  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 dis-
       tribute 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 soft-
       ware.   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  pro-
       prietary.   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  modifi-
       cation 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  run-
       ning  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 Pro-
       gram.

       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 stat-
           ing 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 identifi-
       able 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 collec-
       tive 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  inter-
           change; 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-read-
           able 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,  par-
       ties  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 pro-
       hibited by law if you do not accept this License.  Therefore, by  modi-
       fying  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 orig-
       inal licensor to copy, distribute or  modify  the  Program  subject  to
       these  terms  and  conditions.  You may not impose any further restric-
       tions 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  dis-
       tribute  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 circum-
       stances.

       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 imple-
       mented 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  cer-
       tain  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 limita-
       tion 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 condi-
       tions 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  WAR-
       RANTY  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 WRIT-
       ING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
       REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR  DAM-
       AGES,  INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAM-
       AGES 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













               Appendix: 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) 19yy < name of author >

           This  program is free software; you can redistribute it and/or mod-
           ify it under the terms of the GNU General Public  License  as  pub-
           lished  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 MER-
           CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Gen-
           eral 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 Founda-
           tion, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, 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) 19yy name of author
           Gnomovision  comes  with  ABSOLUTELY  NO WARRANTY; for details type
           `show w'.  This is free software, and you  are  welcome  to  redis-
           tribute it under certain conditions; type `show c' for details.

       The  hypothetical commands `show w' and `show c' should show the appro-
       priate 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 pro-
           gram `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 applica-
       tions with the library.  If this is what you want to do,  use  the  GNU
       Library General Public License instead of this License.



GNU                                   GPL                             GPL(GNU)
