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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:
a) You must cause the modified files to
carry prominent notices stating that you
changed the files and the date of any
change.
b) You must cause any work that you
distribute or publish, that in whole or in
part contains or is derived from the
Program or any part thereof, to be
licensed as a whole at no charge to all
third parties under the terms of this
License.
c) If the modified program normally reads
commands interactively when run, you
must cause it, when started running for
such interactive use in the most ordinary
way, to print or display an announcement
including an appropriate copyright notice
and a notice that there is no warranty (or
else, saying that you provide a warranty)
and that users may redistribute the
program under these conditions, and
telling the user how to view a copy of this
GNU GENERAL PUBLIC LICENSE
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