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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.
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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 License. (Exception: if
the Program itself is
interactive but does not
normally print such an
announcement, your work
based on the Program is not
required to print an
announcement.)
These requirements apply to the
modified work as a whole. If
identifiable sections of that work are
not derived from the Program, and
can be reasonably considered
independent and separate works in
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