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Open Source Software Licenses
GNU GENERAL PUBLIC LICENSE
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 modifi-
cations 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 dis-
cretion, 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 chan-
ged 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 con-
tains 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 running is commenced for such interactive use in the most ordi-
nary 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 war-
ranty) 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 interac-
tive but does not normally print such an announcement, your work based on the Pro-
gram 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 themselves, then this License, and its terms, do not apply to those
sections when you distribute them as separate works. But when you distribute the same
sections as part of a whole which is a work based on the Program, the distribution of the
whole must be on the terms of this License, whose permissions for other licensees extend
to the entire whole, and thus to each and every part regardless of who wrote it. Thus, it is
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