/POLICY=HBMM
    Displays the host-based minimerge (HBMM) policy associated with
    the specified devices.
    HBMM is the only value supported for /POLICY, and it must be
    included.
    If the command is issued with no device specification,
    information is output for all devices. There might be a
    noticeable delay between the output of device information or
    before returning to the DCL command prompt. This delay is normal.