                       'should be 0.\n'               ...
                         '        The solar incidence ' ...
                         'and phase angles should be equal.\n' ] );
              end

              fprintf ( '\n' );

         end

         %
         % It's always good form to unload kernels after use,
         % particularly in Matlab due to data persistence.
         %
         <a href="cspice_kclear.html">cspice_kclear</a>

   Matlab outputs:

         <b>cspice_illumf</b> method: El