This is Debian/GNU Linux's prepackaged version of xpat2.
xpat2 was written by Heiko Eissfeldt <heiko@colossus.escape.de> and 
Michael Bischoff <Michael.Bischoff@gmx.net>.

Michael Bischoff <Michael.Bischoff@gmx.net> is the current upstream maintainer.

This Debian package was put together by Sven Rudolph
<sr1@inf.tu-dresden.de>, from sources obtained from:
sunsite.unc.edu:/pub/Linux/games/x11/strategy/xpat2-1.03-src.tar.gz

Current Debian package maintainer: Joel Rosdahl <joel@debian.org>

Copyright (c) 1994 by Heiko Eissfeldt and Michael Bischoff
(heiko@colossus.escape.de and mbi@mo.math.nat.tu-bs.de)

Copyright (c) 1990 by David Lemke & Network Computing Devices, Inc.
(lemke@ncd.com)

Copyright 1990 Heather Rose and Sun Microsystems, Inc.

Copyright (c) 1989, Donald R. Woods and Sun  Microsystems, Inc.


Permission to use, copy, modify, and distribute this soft-
ware and its documentation for any purpose and without fee
is  hereby  granted,  provided  that  the  above copyright
notice appear in all copies and that both  that  copyright
notice  and  this  permission  notice appear in supporting
documentation.

xpat and xpat2 were developed under Linux, the  free  UNIX
for  the IBM-PC and compatibles. xpat is based on the game
spider.  All new code which is not covered by spider copy-
rights  is  distributed by terms of the GNU General public
license (GNU Copyleft).

On Debian GNU/Linux systems, the complete text of the GNU General
Public License can be found in `/usr/doc/copyright/GPL'.

The original Spider license :

/*
 * Copyright 1990 Heather Rose and Sun Microsystems, Inc.
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that copyright
 * notice and this permission notice appear in supporting documentation, and
 * that the names of Donald Woods and Sun Microsystems not be used in
 * advertising or publicity pertaining to distribution of the software without
 * specific, written prior permission.  Heather Rose and Sun Microsystems not be used in
 * advertising or publicity pertaining to distribution of the software without
 * specific, written prior permission.  Heather Rose and Sun Microsystems make
 * no representations about the suitability of this software for any purpose.
 * It is provided "as is" without express or implied warranty.
 *
 * THE ABOVE-NAMED DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.  IN NO EVENT
 * SHALL HEATHER ROSE OR SUN MICROSYSTEMS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
 * OF THIS SOFTWARE.
 *
 * Author:
 *		Heather Rose
 *		hrose@sun.com
 *
 *		Sun Microsystems, Inc.
 *		2550 Garcia Avenue
 *		Mountain View, CA  94043
 */

/*
 * Copyright 1990 David Lemke and Network Computing Devices
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the name of Network Computing Devices not be 
 * used in advertising or publicity pertaining to distribution of the 
 * software without specific, written prior permission.  Network Computing 
 * Devices makes no representations about the suitability of this software 
 * for any purpose.  It is provided "as is" without express or implied 
 * warranty.
 *
 * NETWORK COMPUTING DEVICES DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS 
 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
 * IN NO EVENT SHALL NETWORK COMPUTING DEVICES BE LIABLE FOR ANY SPECIAL,
 * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 
 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 
 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE 
 * OR PERFORMANCE OF THIS SOFTWARE.
 *
 * Author:  	
 *		Dave Lemke
 *		lemke@ncd.com
 *
 *		Network Computing Devices, Inc
 *		350 North Bernardo Ave
 *		Mountain View, CA 94043
 *
 *	@(#)copyright.h	2.2	90/04/27
 *
 */

/*
% Copyright (c) 1989, Donald R. Woods and Sun Microsystems, Inc.
%
% Permission to use, copy, modify, distribute, and sell this software and its
% documentation for any purpose is hereby granted without fee, provided that
% the above copyright notice appear in all copies and that both that copyright
% notice and this permission notice appear in supporting documentation, and
% that the names of Donald Woods and Sun Microsystems not be used in
% advertising or publicity pertaining to distribution of the software without
% specific, written prior permission.  Donald Woods and Sun Microsystems make
% no representations about the suitability of this software for any purpose.
% It is provided "as is" without express or implied warranty.
%
% THE ABOVE-NAMED DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
% INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.  IN NO EVENT
% SHALL DONALD WOODS OR SUN MICROSYSTEMS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
% CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
% DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
% TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
% OF THIS SOFTWARE.
%
% History: Spider is a solitaire card game that can be found in various books
% of same; the rules are presumed to be in the public domain.  The author's
% first computer implementation was on the Stanford Artificial Intelligence Lab
% system (SAIL).  It was later ported to the Xerox Development Environment.
% The card images are loosely based on scanned-in images but were largely
% redrawn by the author with help from Larry Rosenberg.
%
% This program is written entirely in NeWS and runs on OPEN WINDOWS 1.0.
% It could be made to run much faster if parts of it were written in C, using
% NeWS mainly for its display and input capabilities, but that is left as an
% exercise for the reader.  Spider may also run with little or no modification
% on subsequent releases of OPEN WINDOWS, but no guarantee is made on this
% point (nor any other; see above!).  To run Spider, feed this file to 'psh'.
%
% Author:	Don Woods
%		woods@sun.com
%
%		Sun Microsystems, Inc.
%		2550 Garcia Avenue
%		Mountain View, CA  94043
*/
