xsnap was written by: 
   Clauss Strauch 
   Engineering Design Research Center 
   Carnegie Mellon University.
   internet:  cbs@cad.cs.cmu.edu
   uucp:  ...!harvard!cs.cmu.edu!cbs
   BITnet:  cbs@cad.cs.cmu.edu%CMCCVMA

Permission to use, copy, modify, and distribute xsnap and its
documentation for any purpose and without fee is hereby granted.
xsnap is provided "as is", without express or implied warranty.

Code to output in "xwd" and "ATK raster" formats was added by:
   Bill Janssen
   Xerox Palo Alto Research Center
   <janssen@parc.xerox.com>

Code to output in xpm format was added by:
   Arnaud Le Hors
   Bull Research France -- Koala Project
   <lehors@mirsa.inria.fr>

Features added to version 1.3 (Feb 2000):
   * code to use buttons 2,3 and capturing whole windows
   * ATK raster format removed, as mostly useless in year 2000
   * handling of colormaps
   * additional command-line options
   * runtime key bindings (inline help and file saving)
   Jean-Pierre Demailly
   Universit\'e de Grenoble I -- Institut Fourier
   <demailly@fourier.ujf-grenoble.fr>
   
Features added to version 1.4 (Sept 2004):   
   * support for PNG, JPG, PPM and PNM formats
   * xsnap now linked to libjpeg, libpng rather than using external utilities
   * GUI dialog
   * Improved runtime key bindings
   <demailly@fourier.ujf-grenoble.fr>   
