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consider it more useful to permit linking proprietary
applications with the library. If this is what you want
to do, use the GNU Lesser General Public License
instead of this License.
GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright © 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 applied to a
free program could make it effectively proprietary. To
prevent this, the GPL assures that patents cannot be
used to render the program non-free.
The precise terms and conditions for copying,
distribution and modifi cation follow.
TERMS AND CONDITIONS
0. Defi nitions.
"This License" refers to version 3 of the GNU General
Public License.
"Copyright" also means copyright-like laws that apply
to other kinds of works, such as semiconductor
masks.
"The Program" refers to any copyrightable work
licensed under this License. Each licensee is
addressed as "you". "Licensees" and "recipients" may
be individuals or organizations.
To "modify" a work means to copy from or adapt all
or part of the work in a fashion requiring copyright
permission, other than the making of an exact copy.
The resulting work is called a "modifi ed version" of the
earlier work or a work "based on" the earlier work.
A "covered work" means either the unmodifi ed
Program or a work based on the Program.
To "propagate" a work means to do anything with it
that, without permission, would make you directly or
secondarily liable for infringement under applicable
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