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SYMSS

       SUBROUTINE  SYMSS (UC,LC,OVER)
 C$    (Switch Select)
 C$    Define  two  Hollerith  characters,  "UC"  and  "LC",   for
 C$    switching  from  lower   to  upper-case,   and  upper-   to
 C$    lower-case, respectively, and a single Hollerith character,
 C$    "OVER", for overstriking  the last  character position.   A
 C$    blank or zero  value should  be provided for  any of  these
 C$    which  are  not  intended  to  be  specified.
 C$
 C$    The switch characters  apply to the  current Hershey  font,
 C$    which must have been selected before calling this  routine.
 C$    Case switch characters apply only if an upper-case font has
 C$    been selected, since  with a lower-case  font, all  letters
 C$    are mapped  into  lower-case.   It may  be  convenient  and
 C$    easily-remembered to use UC = 1H< (left angle bracket), and
 C$    LC = 1H> (right angle  bracket).  A switch character  which
 C$    appears twice  in  a row  will  be collapsed  to  a  single
 C$    character, and not recognized as a switch character.
 C$    (02-FEB-82)