ortest unique prefix or
specified with double hyphens.

<A NAME="lbAD">&nbsp;</A>
<H2>DESCRIPTION</H2>

<p>This program is part of <a href="index.html">Netpbm</a>.

<p><b>pnmcrop</b> reads a PBM, PGM, or PPM image as input, removes
borders that are the background color, and produces the same type of
image as output.

<P>If you don't specify otherwise, <B>pnmcrop</B> assumes the
background color is whatever color the top left and right corners of
the image are and if they are different colors, something midw