    &quot;    Radius    (km) :  %f\n&quot;
                         &quot;    Latitude  (deg):  %f\n&quot;
                         &quot;    Longitude (deg):  %f\n&quot;,
                         radius, lat, lon );

                 /.---- A Boundary FOV Surface Intercept (`<a href="surfpt_c.html">surfpt_c</a>') -----

                 Now we will transform one of the FOV corner vectors into the
                 IAU_MARS frame so the surface intercept point can be
                 calculated using <a href