/h4>
<PRE>
 
   plane          is a CSPICE plane. 
 </PRE>
<h4><a name="Detailed_Output">Detailed_Output</a></h4>
<PRE>
 
   normal, 
   constant       are, respectively, a unit normal vector and 
                  constant that define the geometric plane 
                  represented by plane.  Let the symbol &lt; a, b &gt; 
                  indicate the inner product of vectors a and b; 
                  then the geometric plane is the set of vectors x 
                  in three-dimensional space that