/sys$common/syshlp/helplib.hlb LANCP, PURGE, DEVICE, Parameter  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 device-name

    Supplies the LAN controller device name. The device name has
    the form ddcu where dd is the device code, c is the controller
    designation, and u is the unit number. LAN devices are specified
    as the name of the template device which is unit 0. For example,
    the first DE435 Ethernet device is specified as EWA0, the second
    as EWB0.

    For example, you can specify a DEMNA controller as EXA, EXA0,
    or EXA0:. To select all LAN devices, omit the device name and
    include the /ALL qualifier.