Documentation/image updates.

[thirdparty/cups.git] / LICENSE.txt

                Common UNIX Printing System License Agreement

                Copyright 1997-2000 by Easy Software Products
                        44141 AIRPORT VIEW DR STE 204
                     HOLLYWOOD, MARYLAND 20636-3111 USA

                           Voice: +1.301.373.9603
                          Email: cups-info@cups.org
                          WWW: http://www.cups.org

INTRODUCTION

The Common UNIX Printing System(tm), or CUPS(tm), is provided under the GNU
General Public License ("GPL") and GNU Library General Public License
("LGPL"), Version 2. A copy of these licenses follow this introduction.

The GNU LGPL applies to the CUPS API library, located in the "cups"
subdirectory of the CUPS source distribution and in the "/usr/include/cups"
directory and "/usr/lib/libcups.so" or "/usr/lib32/libcups.so" files in the
binary distributions.

The GNU GPL applies to the remainder of the CUPS distribution, including the
"pstoraster" filter which is based upon GNU Ghostscript 5.50.

For those not familiar with the GNU GPL, the license basically allows you
to:

   * Use the CUPS software at no charge.
   * Distribute verbatim copies of the software in source or binary form.
   * Sell verbatim copies of the software for a media fee, or sell support
     for the software.
   * Distribute or sell printer drivers and filters that use the CUPS API so
     long as source code is made available under the GPL.

What this license does not allow you to do is make changes or add features
to CUPS and then sell a binary distribution without source code. You must
provide source for any new drivers, changes, or additions to the software,
and all code must be provided under the GPL.

The GNU LGPL relaxes the "link-to" restriction, allowing you to develop
applications that use the CUPS API library under other licenses and/or
conditions as appropriate for your application.


TRADEMARKS

Easy Software Products has trademarked the Common UNIX Printing System,
CUPS, and CUPS logo. These names and logos may be used freely in any direct
port or binary distribution of CUPS. To use them in derivative products,
please contract Easy Software Products for written permission. Our intention
is to protect the value of these trademarks and ensure that any derivative
product meets the same high-quality standards as the original.


BINARY DISTRIBUTION RIGHTS

Easy Software Products also sells rights to the CUPS source code under a
binary distribution license for vendors that are unable to release source
code for their drivers, additions, and modifications to CUPS under the GNU
GPL and LGPL. For pricing information please contact us at the address shown
above.

The Common UNIX Printing System provides a "pstoraster" filter that utilizes
GNU GhostScript 5.50 to convert PostScript files into a stream of raster
images. For binary distribution licensing of this software, please contact:

     Miles Jones
     Director of Marketing
     Artifex Software Inc.
     454 Las Gallinas Ave., Suite 108
     San Rafael, CA 94903 USA
     Voice: +1.415.492.9861
     Fax: +1.415.492.9862
     EMail: info@arsoft.com


SUPPORT

Easy Software Products sells software support for CUPS as well as a
commercial printing product based on CUPS called ESP Print Pro. You can find
out more at our web site:

     http://www.easysw.com
\f
                    GNU GENERAL PUBLIC LICENSE
                       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
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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
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  The precise terms and conditions for copying, distribution and
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\f
                    GNU GENERAL PUBLIC LICENSE
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\f
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\f
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\f
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                     END OF TERMS AND CONDITIONS
\f
                  GNU LIBRARY GENERAL PUBLIC LICENSE
                         Version 2, June 1991

          Copyright (C) 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.

    [This is the first released version of the library GPL.  It is
   numbered 2 because it goes with version 2 of the ordinary GPL.]

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specially designated Free Software Foundation software, and to any
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your libraries, too.

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price.  Our General Public Licenses are designed to make sure that you
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  To protect your rights, we need to make restrictions that forbid
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\f
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\f
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