Example

 $ START=F$TIME()
 $ END=F$TIME()
 $ SHOW SYMBOL START
  START = "15-JUL-2003 16:26:35.77"
 $ SHOW SYMBOL END
  END = "15-JUL-2003 16:26:41.39"
 $ WRITE SYS$OUTPUT F$DELTA_TIME(START,END)
  0 00:00:05.62

     This example uses the F$TIME() lexical function to define a
     symbol for the start time and end time. It then uses F$DELTA_
     TIME to display the time difference between the start and end
     time.

     This example returns the delta between the start and end time
     in DCL and ASCII formats.

  (WRITE SYS$OUTPUT F$DELTA_TIME ("BOOT", "LOGIN")
    0 10:24:18.92
 $ WRITE SYS$OUTPUT F$DELTA_TIME ("BOOT", "LOGIN", "DCL")
 0-10:24:18.92
 $ WRITE SYS$OUTPUT F$DELTA_TIME ("BOOT", "LOGIN", "ASCTIM")
    0 10:24:18.92)

     This example returns the delta between the boot and login time
     in DCL and ASCII formats.