*+  MESSYS_DD (formerly DDMSG) - 
*   FORTRAN include file for message system constants
*
*    This file is required to provide compatibility.
*    The most important constant defined by it is MSG_VAL_LEN, which is 
*    used in many applications as well as by ceratin adam system routines.
*    MSG_VAL_LEN may now be defined by INCLUDING MESSYS_LEN alone.
*
      INCLUDE 'MESSYS_LEN'    ! Message length definitions.
      INCLUDE 'MESSYS_STRUC'  ! message structure definition required 
                              ! for calling the MESSYS library.

