User's Manual

Dec 12, 2013 11:34 AM
2006, 2007 Free Software Foundation, Inc. Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free
Software Foundation, Inc.
License Text :
GNU GENERAL PUBLIC LICENSE Version 3, 29 June 2007 Copyright (C) 2007 Free Software Foundation, Inc. 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 modified 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 modified 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 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