        syntax of the list is

                           &lt;surface 1&gt; [, &lt;surface 2&gt;...]

                        If present, it indicates that data only for the
                        listed surfaces are to be used; however, data
                        need not be available for all surfaces in the
                        list. If absent, loaded DSK data for any surface
                        associated with the target body are used.

                        The surface list may contain surfa