> <EM>x y size win-size </EM>[method]

<DL COMPACT>
<DT> 
<DD> 
creates tracking-window object and sets slots.
</DD>
</DL>
<BR>
<BR>

             <P>

<H2><A NAME="SECTION03066000000000000000"></A><A NAME="PBMfile"></A>
<BR>
Image File I/O
</H2>
<TT>"vision/pbmfile"</TT> defines functions to transfer
image data between EusLisp and disk files.
EusLisp can read and write pgm
(portable gray-scale map) 
and ppm (portable pixmap) format files.

<P>

 <BR>
<BR> <A NAME="40309"></A>
<B>read-pnm</B> <EM>f &amp;opt