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The files in the common, doc, main, pcl, pl, psi, pxl, tools, svg
and xps directories (folders) and any subdirectories (sub-folders)
thereof are part of GhostPCL, GhostXPS and GhostSVG, collectively
known as GhostPDL.
The files in the gs directory (folder) and the subdirectories
(sub-folders) thereof are part of GPL Ghostscript, along with
copies of its dependent third-party libraries. See the file
gs/LICENSE for information about this directory,
GhostPDL and GPL Ghostscript are free software; you can redistribute
and/or modify them under the terms of the GNU General Public License
as published by the Free Software Foundation, either version 3 of
the License, or (at your option) any later version.
GhostPDL and GPL Ghostscript are distributed in the hope that they
will be useful, but WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program so you can know your rights and responsibilities.
It should be in a file named COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place Suite 330, Boston, MA
02111-1307, USA.
---
The set of truetype fonts in the urwfonts directory are necessary for
the PCL/XL interpreter to function properly but they ARE NOT FREE
SOFTWARE and are NOT distributed under the GNU GPL. They can instead
be redistributed under the AFPL licence which bars commercial use.
If your copy of GhostPDL includes these fonts, you should have
received a copy of the the Aladdin Free Pubilc License, usually
in a file called COPYING.AFPL. If not, please contact Artifex
Software, Inc. 7 Mt. Lassen Drive, Suite A-134, San Rafael CA
94903 USA, or visit http://www.artifex.com/
---
This software (GhostPDL and GPL Ghostscript) contains
an implementation of techniques covered by US Patents 5,055,942
and 5,917,614, and corresponding international patents. These
patents are licensed for use with this software under the following
grant:
Whereas, Raph Levien (hereinafter "Inventor") has obtained patent
protection for related technology (hereinafter "Patented
Technology"), Inventor wishes to aid the the GNU Free Software
project in achieving its goals, and Inventor also wishes to
increase public awareness of Patented Technology, Inventor hereby
grants a fully paid up, nonexclusive, royalty free license to
practice the patents listed below ("the Patents") if and only if
practiced in conjunction with software distributed under the
terms of any version of the GNU General Public License as
published by the Free Software Foundation, 59 Temple Place, Suite
330, Boston, MA 02111. Inventor reserves all other rights,
including without limitation, licensing for software not
distributed under the GNU General Public License.
5055942 Photographic image reproduction device using digital
halftoning to screen images allowing adjustable coarseness
5917614 Method and apparatus for error diffusion screening of
images with improved smoothness in highlight and shadow
regions
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