User's Manual Part 1

NE for Enterprise PSW.indd 20-21
10/16/2015 9:05:01 AM
GNU GENERAL PUBLIC LICENSE
Version 2.1, February 1999
Copyright (C) 1991, 1999 Free Software Foundation, Inc.
51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim
copies of this license document, but changing it is not
allowed.
Preamble
The licenses for most software are designed to take away
your freedom to share and change it. By contrast, the GNU
General Public License is intended to guarantee your
freedom to share and change free software--to make sure
the software is free for all its users. This General Public
License applies to most of the Free Software Foundation's
software and to any other program whose authors commit
to using it. (Some other Free Software Foundation
software is covered by the GNU Library General Public
License instead.) 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
28
designed to make sure that you have the freedom to
distribute copies of free software (and charge for this
service 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 make restrictions that
forbid anyone to deny you these rights or to ask you to
surrender the rights. These restrictions translate to certain
responsibilities for you if you distribute copies of the
software, or if you modify it. For example, if you distribute
copies of such a program, whether gratis or for a fee, you
must give the recipients all the rights that you have. 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.
We protect your rights with two steps:
(1) copyright the software, and (2) offer you this license
which gives you legal permission to copy, distribute and/or
modify the software. Also, for each author's protection and
ours, we want to make certain that everyone understands
that there is no warranty for this free software.
If the software is modified by someone else and passed on,
we want its recipients to know that what they have is not
the original, so that any problems introduced by others
will not reflect on the original authors' reputations.
Finally, any free program is threatened constantly by software
patents. We wish to avoid the danger that redistributors of a free
program will individually obtain patent licenses, in effect making
the program proprietary. To prevent this, we have made it clear
that any patent must be licensed for everyone's free use or not
licensed at all.
The precise terms and conditions for copying,
distribution and modification follow.
TERMS AND CONDITIONS FOR COPYING,
DISTRIBUTION AND MODIFICATION
0) This License applies to any program or other work which
contains a notice placed by the copyright holder saying it may be
distributed under the terms of this General Public License. The
“Program”, below, refers to any such program or work, and a
“work based on the Program” means either the Program or any
derivative work under copyright law: that is to say, a work
containing the Program or a portion of it, either verbatim or with
modifications and/or translated into another language.
(Hereinafter, translation is included without limitation in the term
“modification”.) Each licensee is addressed as “you”.
Activities other than copying, distribution and
modification are not covered by this License; they
are outside its scope. The act of running the Program is
not restricted, and the output from the Program is
covered only if its contents constitute a work based on
the Program (independent of having been made by
running the Program). Whether that is true depends on
what the Program does.
1) You may copy and distribute 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 and
disclaimer of warranty; keep intact all the notices that
refer to this License and to the absence of any warranty;
and give any other recipients of the Program a copy of
this License along with the Program. You may charge a
fee for the physical act of transferring a copy, and you
may at your option offer warranty protection in exchange
for a fee.
2) You may modify your copy or copies of the
Program or any portion of it, thus forming a work based
on the Program, and copy and distribute such
modifications or work under the terms of Section 1 above,
provided that you also meet all of these conditions:
Section 2: Product Warranty 29