*+
*  Name:
*     ERR_CMN

*  Purpose:
*     Define the Error Reporting System global variables.

*  Language:
*     Starlink Fortran 77

*  Type of module:
*     Global variables include file.

*  Description:
*     Define the common blocks holding the Error Reporting System 
*     global variables.

*  Authors:
*     PCTR: P.C.T. Rees (STARLINK)
*     AJC: A.J.Chipperfield (STARLINK)
*     {enter_new_authors_here}

*  History:
*     25-JUN-1991 (PCTR):
*        Original version.
*     20-JUL-1999 (AJC)
*        Add tuning parameters
*     {enter_further_changes_here}

*-

*  Common Blocks:
      LOGICAL ERRBEL                    ! Bell character switch
      LOGICAL ERROPN                    ! Output file status
      INTEGER ERRWSZ                    ! Line size for wrapping
      LOGICAL ERRRVL                    ! Reveal all error messages
      LOGICAL ERRSTM                    ! Error in 'stream' mode
      INTEGER ERRDEF                    ! The 'default' error level

      COMMON / ERRCM1 / ERROPN, ERRBEL
      COMMON / ERRCM2 / ERRWSZ, ERRRVL, ERRSTM
      COMMON / ERRCM3 / ERRDEF

*.
