 also possible to invoke Ghostscript directly and select an output
device which directly handles displaying the image on screen.

<p>
This section describes the various display-oriented devices that are available
in Ghostscript.

<h3><a name="x11_devices"></a>X Window System</h3>

<p>
Perhaps the most common use of of a display device is with the X Window System
on unix-like systems. It is the default device on the command line client on
such systems, and is used more creatively by the gv client application