device-name[:]

    Specifies the name of the device whose spooling or operational
    status is to change. The device must be a print device or a
    terminal if you want to change the spooling status; the device
    must be a disk or magnetic tape if you want to change the
    operational status.

    When you specify qualifiers that act on shadow sets, the device
    might be a shadow set member (ddcu:) or the whole shadow set
    (DSAnnnn:), as noted in the qualifier format. Depending on the
    qualifier, if no device name is supplied, the qualifier applies
    to all shadow sets mounted on the node from which the command is
    executed.