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 modifi cation follow.
TERMS AND CONDITIONS FOR
COPYING, DISTRIBUTION AND
MODIFICATION
Version 2, June 1991 Copyright (C) 1989,
1991 Free Software Foundation, Inc. 51
Franklin S
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 "modifi cation".) Each licensee
is addressed as "you".
Activities other than copying, distribution
and modifi cation 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
modifi cations or work under the terms of
Section 1 above, provided that you also
meet all of these conditions :
a) You must cause the modifi ed fi les to
carry prominent notices stating that
you changed the fi les 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 modifi ed 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
