_c</a> ( m, span1, tspan1 ); 
          <a href="mxv_c.html">mxv_c</a> ( m, span2, tspan2 ); 
 
          /.
          Make a new CSPICE plane tplane from the 
          transformed point and spanning vectors, and find a 
          unit normal and constant for this new plane. 
          ./
          
          <a href="psv2pl_c.html">psv2pl_c</a> ( tpoint,   tspan1,  tspan2,   &amp;tplane ); 
          <b>pl2nvc_c</b> ( &amp;tplane,  tn,      &amp;tc               ); 
          

 </PRE>
<h4><a name="Restri