1 - /CONTINUOUS

       /CONTINUOUS (default)
       /NOCONTINUOUS

          The /CONTINUOUS qualifier invokes a continuous
          monitor display. Entering Ctrl/C, Ctrl/Y, or Ctrl
          /Z terminates this display.

          Using /NOCONTINUOUS provides a snapshot display and
          then returns to the DCL prompt.

2 - /VOLUME

       /VOLUME (default)
       /NOVOLUME

          The /VOLUME qualifier indicates that a volume name
          instead of a script name is present on the command
          line. The /VOLUME qualifier must be used when a
          volume name is provided as a parameter to the MONITOR
          subcommand.