Parameter

filespec [,...]

   Specifies the file or name of the device being dumped.

   If the specified device is not a disk, a tape, or a network
   device, or if the device is mounted with the /FOREIGN qualifier,
   the file specification must contain only the device name.

   If the specified device is a network device, a disk device, or a
   tape device that is mounted without the /FOREIGN qualifier, the
   file specification can contain the asterisk (*)  and the percent
   sign (%) wildcard characters.

   Files-11 C/D format standards have been implemented on mounted
   and foreign mounted volumes.