operation manual

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.
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 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
53