User's Manual

118
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 modied 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 reect 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
modication follow.
Terms & conditions for copying, distribution, &
modication
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 modications and/or
translated into another language. (Hereinafter, translation
is included without limitation in the term “modication”.)
Each licensee is addressed as “you”.
Activities other than copying, distribution and modication
are not covered by this License; they are outside its scope.
The act