ay.
</p>
<p>The filename passed as input has the syntax:
</p><div class="example">
<pre class="example">[<var>hostname</var>]:<var>display_number</var>.<var>screen_number</var>[+<var>x_offset</var>,<var>y_offset</var>]
</pre></div>

<p><var>hostname</var>:<var>display_number</var>.<var>screen_number</var> specifies the
X11 display name of the screen to grab from. <var>hostname</var> can be
omitted, and defaults to &quot;localhost&quot;. The environment variable
<code>DISPLAY</code> contains the default disp