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English
The precise terms and conditions for copying, distribution and
modification follow.
TERMS AND CONDITIONS
0. Definitions.
"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 "modified version" of the earlier work or a work "based on"
the earlier work.
A "covered work" means either the unmodified 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 copyright law, except
executing it on a computer or modifying a private copy.
Propagation includes copying, distribution (with or without
modification), making available to the public, and in some
countries other activities as well.
To "convey" a work means any kind of propagation that enables
other parties to make or receive copies. Mere interaction with
a user through a computer network, with no transfer of a copy,
is not conveying.
An interactive user interface displays "Appropriate Legal
Notices" to the extent that it includes a convenient and
prominently visible feature that (1) displays an appropriate
copyright notice, and (2) tells the user that there is no
warranty for the work (except to the extent that warranties
are provided), that licensees may convey the work under this
License, and how to view a copy of this License. If the interface
presents a list of user commands or options, such as a menu, a
prominent item in the list meets this criterion.
1. Source Code.
The "source code" for a work means the preferred form of the
work for making modifications to it. "Object code" means any
non-source form of a work.
A "Standard Interface" means an interface that either is an
official standard defined by a recognized standards body, or, in
the case of interfaces specified for a particular programming
language, one that is widely used among developers working
in that language.
The "System Libraries" of an executable work include anything,
other than the work as a whole, that (a) is included in the
normal form of packaging a Major Component, but which is not
part of that Major Component, and (b) serves only to enable
use of the work with that Major Component, or to implement a
Standard Interface for which an implementation is available to
the public in source code form. A "Major Component", in this
context, means a major essential component (kernel, window
system, and so on) of the specific operating system (if any) on
which the executable work runs, or a compiler used to produce
the work, or an object code interpreter used to run it. The
"Corresponding Source" for a work in object code form means
all the source code needed to generate, install, and (for an
executable work) run the object code and to modify the work,
including scripts to control those activities. However, it does
not include the work's System Libraries, or general-purpose
tools or generally available free programs which are used
unmodified in performing those activities but which are not
part of the work. For example, Corresponding Source includes
interface definition files associated with source files for the
work, and the source code for shared libraries and dynamically
linked subprograms that the work is specifically designed to
require, such as by intimate data communication or control flow
between those subprograms and other parts of the work.
The Corresponding Source need not include anything that
users can regenerate automatically from other parts of the
Corresponding Source. The Corresponding Source for a work
in source code form is that same work.
2. Basic Permissions.
All rights granted under this License are granted for the term
of copyright on the Program, and are irrevocable provided the
stated conditions are met. This License explicitly affirms your
unlimited permission to run the unmodified Program. The
output from running a covered work is covered by this License
only if the output, given its content, constitutes a covered
work. This License acknowledges your rights of fair use or
other equivalent, as provided by copyright law.
You may make, run and propagate covered works that you
do not convey, without conditions so long as your license
otherwise remains in force. You may convey covered works to
others for the sole purpose of having them make modifications
exclusively for you, or provide you with facilities for running
those works, provided that you comply with the terms of this
License in conveying all material for which you do not control
copyright. Those thus making or running the covered works for
you must do so exclusively on your behalf, under your direction
and control, on terms that prohibit them from making any
copies of your copyrighted material outside their relationship
with you.
Conveying under any other circumstances is permitted solely
under the conditions stated below. Sublicensing is not allowed;
section 10 makes it unnecessary.
3. Protecting Users' Legal Rights From Anti-Circumvention
Law.
No covered work shall be deemed part of an effective
technological measure under any applicable law fulfilling
obligations under article 11 of the WIPO copyright treaty
adopted on 20 December 1996, or similar laws prohibiting or
restricting circumvention of such measures.
When you convey a covered work, you waive any legal power
to forbid circumvention of technological measures to the extent
such circumvention is effected by exercising rights under this
License with respect to the covered work, and you disclaim
any intention to limit operation or modification of the work as
a means of enforcing, against the work's users, your or third
parties' legal rights to forbid circumvention of technological
measures.
4. Conveying Verbatim Copies.
You may convey 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; keep intact all notices stating that
this License and any non-permissive terms added in accord
with section 7 apply to the code; keep intact all notices of the
absence of any warranty; and give all recipients a copy of this
License along with the Program.
You may charge any price or no price for each copy that
you convey, and you may offer support or warranty protection
for a fee.
