any sample filters or backends provided with CUPS shall not be considered to be a derivative work or collective work
based on the CUPS program and is exempt from the mandatory source code release clauses of the GNU GPL. You
may therefore distribute linked combinations of the CUPS imaging library with Apple OS-Developed Software without
releasing the source code of the Apple OS-Developed Software. You may also use sample filters and backends
provided with CUPS to develop Apple OS-Developed Software without releasing the source code of the Apple OS-
Developed Software.
An Apple Operating System means any operating system software developed and/or marketed by Apple Computer,
Inc., including but not limited to all existing releases and versions of Apple's Darwin, Mac OS X, and Mac OS X
Server products and all follow-on releases and future versions thereof.
This exception is only available for Apple OS-Developed Software and does not apply to software that is distributed for
use on other operating systems.
All CUPS software that falls under this license exception have the following text at the top of each source file:
This file is subject to the Apple OS-Developed Software exception.
///////////////////////////////////////////////////////////////////
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
Everyone is permitted to copy and distribute verbatim copies of this license
document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your freedom to
share and change it. By contrast, the GNU General Public License is intended
to guarantee your freedom to share and change free software--to make sure
the software is free for all its users. This General Public License applies
to most of the Free Software Foundation's software and to any other program
whose authors commit to using it. (Some other Free Software Foundation
software is covered by the GNU Library General Public License instead.) You
can apply it to your programs, too.
When we speak of free software, we are referring to freedom, 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 or use pieces of it in new free programs; and that
you know you can do these things.
To protect your rights, we need to make restrictions that forbid anyone to
deny you these rights or to ask you to surrender the rights. These
restrictions translate to certain responsibilities for you if you distribute
copies of the software, or if you modify it.
For example, if you distribute copies of such a program, whether gratis or
for a fee, you must give the recipients all the rights that you have. You
must make sure that they, too, receive or can get the source code. And you
must show them these terms so they know their rights.
We protect your rights with two steps: (1) copyright the software, and (2)
offer you this license which gives you legal permission to copy, distribute
and/or modify the software.
