               blank. Case is not significant. So

                  &quot;Mars MEGDR 128 PIXEL/DEG&quot;

               is equivalent to

                  &quot; mars megdr  128  pixel/deg &quot;

               but not to

                  &quot;MARS MEGDR128PIXEL/DEG&quot;

      target   is the name of the target body. `target' is
               case-insensitive, and leading and trailing blanks in
               `target' are not significant. Optionally, you may
               supply a string containi