*+
*  Name:
*     MSG_SYS

*  Purpose:
*     Define the MSG_ private constants.

*  Language:
*     Starlink Fortran 77

*  Type of module:
*     Global constants include file.

*  Description:
*     This file contains definitions of the global constants used 
*     internally by the MSG_ system.

*  Authors:
*     BDK: Dennis Kelly (ROE)
*     PCTR: P.C.T. Rees (STARLINK)
*     {enter_new_authors_here}

*  History:
*     3-NOV-1987 (BDK):
*        Increase SZTOK and SZMSG. 
*     15-MAR-1990 (PCTR):
*        Most definitions placed in EMS_SYS.
*     {enter_further_changes_here}

*-

*  Global Constants:
      CHARACTER MSG__KEYEC              ! Keyword escape character
      PARAMETER( MSG__KEYEC = '%' )

      CHARACTER MSG__REFEC              ! Reference escape character
      PARAMETER( MSG__REFEC = '$' )

      INTEGER MSG__SZOUT                ! Size of output text
      PARAMETER( MSG__SZOUT = 79 )

      INTEGER MSG__SZTOK                ! Size of message token text
      PARAMETER( MSG__SZTOK = 200 )

*.
