B>, the vertical offset defaults to the
same as the horizontal offset (above), upward.

</DL>


<A NAME="files"></a>
<H2>FILES</H2>

<p>Input is a PPM file named by the <I>ppmfile</I> command line
argument; if you don't specify <I>ppmfile</I>, the input is Standard
Input.

<P>The output is a PPM file, written to Standard Output.

<p><B>ppmshadow</B> creates a number of temporary files as it executes.  It
creates a new directory for them, <b>/tmp/ppmshadow</b><i>pid</i>,
where <i>pid</i> is the process ID of