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  Routine:      CBL_READ_KBD_CHAR
 
  Function:     Waits until a character is typed and then reads it
                with no echo.
 
  Syntax:       CALL "CBL_READ_KBD_CHAR" USING     char
                                         RETURNING status-code
 
  Parameters:   char                   PIC X.
                status-code            See ◄Key►
                                    -♦-