           GNU GENERAL PUBLIC LICENSE

 Copyright (C) 1989, 1991 Free Software
Foundation, Inc. 675 Mass Ave, Cambridge, MA
02139, 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)
    19yy <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., 675 Mass Ave, Cambridge, MA
    02139, 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 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.
