Parameter

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.