REM FILE-BASED OUTPUT REDIRECTION
 0 D$ =  CHR$ (4):F$ = "DEV/STDERR": PRINT D$"OPEN"F$: PRINT D$"CLOSE"F$: PRINT D$"APPEND"F$: PRINT D$"WRITE"F$
 1  PRINT "GOODBYE, WORLD!"
 2  PRINT D$"CLOSE"F$