ethod indicated by
               'abcorr'.

   the call:

      [surf] = <b>mice_srfxpt</b>( method, target, et, abcorr, obsrvr, dref, dvec)

   returns:

      surf   the structure(s) containing the results of the calculation.

              [1,n] = size(surf); struct = class(surf)

              Each structure consists of the fields:

                spoint   the surface intercept point on the target body of
                         the ray defined by the observer and the direction
                      