a href="../req/planes.html">PLANES</a> 
 </PRE>
<h4><a name="Keywords">Keywords</a></h4>
<PRE>
 
   GEOMETRY 
   MATH 
   PLANE 
 

</PRE>
<h4><a name="Brief_I/O">Brief_I/O</a></h4>
<PRE>
 
   Variable  I/O  Description 
   --------  ---  -------------------------------------------------- 
   plane      I   A CSPICE plane. 
   normal, 
   constant   O   A normal vector and constant defining the 
                  geometric plane represented by plane. 
 </PRE>
<h4><a name="Detailed_Input">Detailed_Input</a><