| Published by the Free Software Foundation 59 Temple Place - Suite
330 Boston, MA 02111-1307 USA
Copyright (C) 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998
Free Software Foundation, Inc.
Permission is granted to make and distribute verbatim copies of
this manual provided the copyright notice and this permission notice are
preserved on all copies.
Permission is granted to copy and distribute modified versions of
this manual under the conditions for verbatim copying, provided also that
the sections entitled "GNU General Public License," "Funding for Free Software,"
and "Protect Your Freedom--Fight `Look And Feel'" are included exactly
as in the original, and provided that the entire resulting derived work
is distributed under the terms of a permission notice identical to this
one.
Permission is granted to copy and distribute translations of this
manual into another language, under the above conditions for modified versions,
except that the sections entitled "GNU General Public License," "Funding
for Free Software," and "Protect Your Freedom--Fight `Look And Feel'",
and this permission notice, may be included in translations approved by
the Free Software Foundation instead of in the original English.
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.
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., 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) 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.
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