ADAS Subroutine xxflsh

      SUBROUTINE XXFLSH(PIPEOU)
C-----------------------------------------------------------------------
C
C  ****************** FORTRAN77 SUBROUTINE: XXFLSH *********************
C
C  PURPOSE: ROUTINE FOR SETTING CALL TO "FLUSH" COMMAND DEPENDING ON
C	    OPERATING SYSTEM SPCIFICS.
C
C  CALLING PROGRAM: ANY ADAS PROGRAM WHICH COMMUNICATES VIA A PIPE 
C		    PARTICULARLY TO IDL INTERFACE ROUTINES.
C
C
C  SUBROUTINE:
C
C          (I*4)  PIPEOU  = UNIT NUMBER OF PIPE USED 
C
C NOTE:
C
C
C ROUTINES:
C          ROUTINE    SOURCE    BRIEF DESCRIPTION
C          ------------------------------------------------------------
C
C
C AUTHOR:  L. JALOTA (TESSELLA SUPPORT SERVICES PLC)
C
C DATE:     6/03/95
C
C-----------------------------------------------------------------------
C-----------------------------------------------------------------------
      INTEGER             PIPEOU