GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License Agreement 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 work
containing the Program or a portion of it, either verbatim or with modifications.
Each licensee is addressed as “you”.
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 General Public License and to the absence of
any warranty; and give any other recipients of the Program a copy of this General
Public License along with the Program. You may charge a fee for the physical act of
transferring a copy.
2. You may modify your copy or copies of the Program or any portion of it, and copy
and distribute such modifications under the terms of Paragraph 1 above, provided
that you also do the following:
a) cause the modified files to carry prominent notices stating that you changed the
files and the date of any change; and
b) cause the whole of any work that you distribute or publish, that in whole or in
part contains the Program or any part thereof, either with or without modifications,
to be licensed at no charge to all third parties under the terms of this General Public
License (except that you may choose to grant warranty protection to some or all
third parties, at your option).
c) If the modified program normally reads commands interactively when run, you
must cause it, when started running for such interactive use in the simplest and most
usual 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 General Public License.
d) 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. Mere aggregation of
another independent work with the Program (or its derivative) on a volume of a
storage or distribution medium does not bring the other work under the scope of
these terms.
3. You may copy and distribute the Program (or a portion or derivative of it, under
Paragraph 2) in object code or executable form under the terms of Paragraphs 1 and
2 above provided that you also do one of the following:
a) accompany it with the complete corresponding machine-readable source code,
which must be distributed under the terms of Paragraphs 1 and 2 above; or,
b) accompany it with a written offer, valid for at least three years, to give any third
party free (except for a nominal charge for the cost of distribution) a complete
