(fixref); cell = class(fixref)

      abcorr   is the aberration correction to be used in computing
               the position and orientation of the target body and
               the location of the illumination source.

               [1,c5] = size(abcorr); char = class(abcorr)

                  or

               [1,1] = size(abcorr); cell = class(abcorr)

               For remote sensing applications, where the apparent
               illumination angles seen by the observer are desired,
           