From Linux Man Pages
display - displays an image or image sequence on any X server.
display [options] input-file
OVERVIEW
The display program is a member of the ImageMagick(1) suite of tools. Use it to display an image or image
sequence on any X server.
For more information about the display command, point your browser to file:///usr/share/doc/packages/ImageMag-
ick/www/display.html or http://www.imagemagick.org/script/display.php.
Run `display -help' to get a summary of the display command options.
SEE-ALSO
ImageMagick(1)
COPYRIGHT
Copyright (C) 1999-2006 ImageMagick Studio LLC. Additional copyrights and licenses apply to this software, see
http://www.imagemagick.org/script/license.php
CATEGORY