bottom</B>|
<b>above</b>|<b>below</b>}]
<BR>
[<B>-xoff=</B><I>X</I>]
[<B>-yoff=</B><I>Y</I>]
<BR>
[<B>-alpha=</B><I>alpha-pgmfile</I>]
[<B>-invert</B>]
[<B>-opacity=<i>opacity</i></B>]
[<b>-linear</b>]
<BR>
<I>overlay_file</I>
[<I>underlying_file</I> [<I>output_file</I>]]

<p>Minimum unique abbreviation of option is acceptable.  You may use double
hyphens instead of single hyphen to denote options.  You may use white
space in place of the equals sign to separate an option name from its value.

<A NAME="lbAD