Parent Topic: <A href="http://www.pcigeomatics.com/cgi-bin/pcihlp/DCP|IMAGE+COMMANDS">IMAGE COMMANDS</a><hr>
<H4>IO</H4>
Image Overlay overlays one or more image planes on the display,
without removing graphic planes.
<P>
<PRE>
 IO [n1,n2,n3]

 n1:      Image plane assigned to Red gun     &lt;last image&gt;
 n2:      Image plane assigned to Green gun   &lt;n1&gt;
 n3:      Image plane assigned to Blue gun    &lt;n2&gt;
</PRE>
If image planes are not specified, the colour gun mapping is set to
the previous setting before the last IB, GD, or ZZ command.
<P>
<hr>
Parent Topic: <A href="http://www.pcigeomatics.com/cgi-bin/pcihlp/DCP|IMAGE+COMMANDS">IMAGE COMMANDS</a><br>
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