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Also, for each author's protection and ours, we want to make
certain that everyone understands that there is no warranty fi)r
this flee software, lfthe sotiware 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
ofllers will not reflect oil the original authors' reputations.
Finally, any lhee program is threatened constantly by soltware
patents. We wish to avoid the danger that redistributors of a fi'ee
program will individuNly obtain patent licenses, ineffect
making the program proprietary. To prevent this, we have made
it clear that _my patent must be licensed for everyone's flee use
or not licensed at all.
The precise terms and conditions fi_r copying, distribution and
modification follow.
GNU GENERAL PUBLIC LICENSE TERMS AND
CONDITIONS FOR COPYING, DISTRIBUTION AND
MODIFICATION
O. This License applies to any progran_ or ()tilerwork which
contains a notice placed by the copyright holder saying it
may be distributed under the terms ot this General Public
License. The "Progranl", below, refers to any such progranl
or work, and a"work based on the Progrmn" means either the
Progn'am or any deriwttive work under copyright law: that is
to say, awork containing the Progrmn or a portion of it, either
verbatil/l or with modifications and/or transl ated into another
language. (Hereinafter, translation is included withont
limitation in the term "modification".) Each licensee is
addressed as "you".
Activities other than copying, distribution and modification are
not covered by tills License; they are outside its scope. The act
of running the Progranl is not restricted, and the output ffonl the
Program is covered only if its contents constitute a work based
on the Program (independent of having been made by running
tile Program). Wtlether that is true depends on what the Program
does.
I. You may copy and distribute verbatinl copies of the
Program's source code as you receive it, in any medium,
provided that you conspicuously and appropriately publistl
on each copy an appropriate copyright notice and disclaimer
of warranty; keep inlact all the notices that refer to this
License and to the absence of any warranty; and give any
ottler recipients of the Progrmn a copy of this License along
with the Program.
You nmy charge a tee R)rthe physical act of transli_rring a copy,
mid you may at your option offer warranty protection in
exchange fi)r a l_2e.
2. You may modify your copy or copies of the Progranl 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) Yon nmst 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 tile
Program or any part thereof, to be licensed as a whole at
no charge to all ttlird parlies under the terms of this
License.
c) If the modified program normally reads conmmnds
interactively wtlen run, you must cause it, when started
running fi)r 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
wan:anty (or else, saying that you provide a wan'anty) and
ttlat users may redistribute the program under these
conditions, and telling tile user how to view a copy of this
License. (Exception: if the Program itself is interactive
hut does not normally print such an announcement, yonr
work based on the Program ix not required to print an
announcement.)
These requirements apply to the modified work as a whole. It
identifiable sections of that work am not derived from the
Program, and can be reasonably considered independent and
separate works inthemselves, then this License, and its terms, do
not apply to those sections when you distribute them as separate
works. But when yon distribute the sanle sections as part of a
whole whictl is a work based on the Program, the distrihution of
tile whole must be on the terms of this License, whose
permissions fi)r other licensees extend to the entire whole, and
ttms to eactl and every part regardless of who wrote it.
Thus, it is not the intent of tills section 1oclaim rights or contest
your rights to work written entirely by you; rather, the intent is
to exercise the right to control the distribution of derivative or
collective works based on the Program.
In addition, nlere aggregation of another work not based on tile
Progrmn with the Program (or wdh a work based on the
Program) on a volume of a storage or distribution medium does
not bring the other work under the scope of this License.
3. You may copy and distribute the Progrmn (or a work based
on it, under Section 2) in object code or executable fZ_rm
under the terms of Sections 1 and 2 above provided that you
also do one of the fi_llowing:
a) Accompany it with the complete correspondblg machine=
readable source code, which must be distributed under
the terms of Sections 1 and 2 above on a medimn
customarily used R_rsol, ware interchange; or.
b) Accompany it wilh a written offer, valid fi)r at least three
years, to give any third party, for a charge no more than
your cost of physically pertbrming source distribution, a
complete machine-readable copy of the corresponding
source code, to be distributed under tile terms of Sections
1and 2 above on a medimn customarily used for software
interchange; or,
c) Accompany it with the information you received as to the
ofl)r to distribute correspondblg source code. (This
alternative is allowed only fi)r noncommercial
distribution and only if you received the program in
o/_iect code or execntable lbrnl with such an otl_r_ in
accord with Subsection b above.)
The source code fi)r awork me,ms the preferred tbrm of tile work
fi_rmaMng modifications to it. For an executable work, complete
source co& means all the source code fi)r all modules it
contains, plus any associated interface definition files, plus the
scripls used to control compilation and installation of the
executable. However, as a special exception, the source code
distributed need not include anything that is normally distributed
(in either source or binary form) with the major components
(compiler, kernel, and so oil) of the operating system on which
the executable runs, unless that component itself accompmlies
tile executable.
If distribution of executable or object code is made by ofl)ring
access to copy from a designated place, then otl)ring equivalent
access to copy the source code from tile same place counts as
distribution of the source code, even ttlougtl third parties are not
compelled to copy tile source along with the ohject co&.
4. You may not copy, modily, suhlicense, or distribute the
Program except as expressly provided under this License.
Any attempt otherwise to copy, modify, sublicense or
distribute the Program is void, and will automatically
terminate your rights under this License. However, parties
who have received copies, or rights, ffonl you under this
License will not have ttleir licenses terminated so long as
such parties remain in lull compliance.
5. You are not required to accept this License, since you have
not signed it. However, nothing else grants you permission to
modify or distribute the Program or its derivative works.
These actions am prohibited by law if you do not accept this
License. Therefi_re, by modifying or dislributing the
Program (or any work based on the Program), you indicate
your acceptance of this License to do so, and all its terms and
conditions fbr copying, distributing or modifying the
Progrmn or works based on il.
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