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51
APPENDIX
interactive mode:
Gnomovision version 69, Copyright (C) year
name of author Gnomovision comes with
ABSOLUTELY NO WARRANTY; for details
type ‘show w’. This is free software, and you
are welcome to redistribute it under certain
conditions; type ‘show c’ for details.
The hypothetical commands ‘show w’ and
‘show c’ should show the appropriate parts
of the General Public License. Of course,
the commands you use may be called
something other than ‘show w’ and ‘show
c’; they could even be mouse-clicks or
menu items-whatever suits your program.
You should also get your employer (if you
work as a programmer) or your school, if
any, to sign a “copyright disclaimer” for the
program, if necessary.
Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright
interest in the program ‘Gnomovision’
(which makes passes at compilers) written
by James Hacker.
signature of Ty Coon, 1 April 1989
Ty Coon, President of Vice
This General Public License does not
permit incorporating your program into
proprietary programs. If your program is
a subroutine library, you may consider it
more useful to permit linking proprietary
applications with the library. If this is what
you want to do, use the GNU Lesser General
Public License instead of this license
GNU LESSER GENERAL PUBLIC LICENSE
Version 2.1, February 1999
Copyright (C) 1991, 1999 Free Software
Foundation, Inc. 51 Franklin Street, Fifth
Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute
verbatim copies of this license document,
but changing it is not allowed.
[This is the first released version of the
Lesser GPL. It also counts as the successor
of the GNU Library Public License, version
2, hence the version number 2.1.]
Preamble
The licenses for most software are designed
to take away your freedom to share and
change it. By contrast, the GNU General
Public Licenses are intended to guarantee
your freedom to share and change free
software - to make sure the software is
free for all its users.
This license, the Lesser General Public
License, applies to some specially
designated software packages - typically
libraries - of the Free Software Foundation
and other authors who decide to use it.
You can use it too, but we suggest you first
think carefully about whether this license
or the ordinary General Public License is
the better strategy to use in any particular
case, based on the explanations below.
When we speak of free software, we are
referring to freedom of use, not price. Our
General Public Licenses are designed to
make sure that you have the freedom to
distribute copies of free software (and
charge for this service if you wish); that
you receive source code or can get it if you
want it; that you can change the software
and use pieces of it in new free programs;
and that you are informed that you can do
these things.
To protect your rights, we need to make
restrictions that forbid distributors to deny
you these rights or to ask you to surrender
these rights. These restrictions translate
to certain responsibilities for you if you
distribute copies of the library or if you
modify it.
For example, if you distribute copies of the
library, whether gratis or for a fee, you must
give the recipients all the rights that we
gave you. You must make sure that they,
too, receive or can get the source code.
If you link other code with the library, you
must provide complete object files to the
recipients, so that they can relink them
with the library after making changes to
the library and recompiling it. And you
must show them these terms so they know
their rights.
We protect your rights with a two-step
method: (1) we copyright the library, and
(2) we offer you this license, which gives
you legal permission to copy, distribute
and/or modify the library.
To protect each distributor, we want to
make it very clear that there is no warranty
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