</PRE>
<h4><a name="Required_Reading">Required_Reading</a></h4>
<PRE>
 
   <a href="../req/dsk.html">DSK</a> 
 </PRE>
<h4><a name="Keywords">Keywords</a></h4>
<PRE>
 
   DSK 
   FILES 
   TOPOGRAPHY 
  

</PRE>
<h4><a name="Brief_I/O">Brief_I/O</a></h4>
<PRE>
 
   Variable  I/O  Description 
   --------  ---  -------------------------------------------------- 
   v1, 
   v2, 
   v3         I   Vertices of a plate. 
   normal     O   Plate's outward normal vector. 
 </PRE>
<h4><a name="Detailed_Input">Detail