 a regular bitmap

<DT><B><a href="ppmcolormask.html">ppmcolormask</a>  </B>
<DD>create mask of areas of a certain color in an image

<DT><B><a href="pnmsplit.html">pnmsplit</a>      </B>
<DD>split a multi-image Netpbm file into multiple 1-image files

<DT><B><a href="pnmindex.html">pnmindex</a>      </B>
<DD>build a visual index of a bunch of Netpbm images

<DT><B><a href="pnmmontage.html">pnmmontage</a>    </B>
<DD>build multiple Netpbm images into a single montage image

<DT><B><a href="pgmbentley.html">