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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.
GNU GPLv3
GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc.
<http://fsf.org/>
Everyone is permitted to copy and distribute
verbatim copies of this license document, but
changing it is not allowed.
Preamble
The GNU General Public License is a free, copyleft
license for software and other kinds of works.
The licenses for most software and other practical
works are designed to take away your freedom to
share and change the works. By contrast, the GNU
General Public License is intended to guarantee
your freedom to share and change all versions of
a program--to make sure it remains free software
for all its users. We, the Free Software Foundation,
use the GNU General Public License for most of our
software; it applies also to any other work released
this way by its authors. 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 them 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 prevent
others from denying you these rights or asking
you to surrender the rights. Therefore, you have
certain responsibilities if you distribute copies of
the software, or if you modify it: responsibilities to
respect the freedom of others.
For example, if you distribute copies of such a
program, whether gratis or for a fee, you must
pass on to the recipients the same freedoms that
you received. 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.
Developers that use the GNU GPL protect your
rights with two steps:
(1) assert copyright on the software, and (2) offer
you this License giving you legal permission to
copy, distribute and/or modify it.
For the developers’ and authors’ protection, the
GPL clearly explains that there is no warranty for
this free software. For both users’ and authors’
sake, the GPL requires that modifi ed versions be
marked as changed, so that their problems will not
be attributed erroneously to authors of previous
versions.
Some devices are designed to deny users access
to install or run modifi ed versions of the software
inside them, although the manufacturer can do
so. This is fundamentally incompatible with the
aim of protecting users’ freedom to change the
software. The systematic pattern of such abuse
occurs in the area of products for individuals to use,
which is precisely where it is most unacceptable.
Therefore, we have designed this version of the
GPL to prohibit the practice for those products. If
such problems arise substantially in other domains,
we stand ready to extend this provision to those
domains in future versions of the GPL, as needed
to protect the freedom of users.
Finally, every program is threatened constantly by
software patents. States should not allow patents
to restrict development and use of software on
general-purpose computers, but in those that do,
we wish to avoid the special danger that patents
