/UPDATE (DEFINE DEVICE only)

    Adds LAN devices that are not currently in the LAN permanent
    device database to that database. The initial entry for the
    device uses default values for all parameters. To update the
    permanent database with current information from the volatile
    database, use the DEFINE DEVICE command with the /VOLATILE
    qualifier. You can combine the /UPDATE and /VOLATILE qualifiers
    in a single DEFINE DEVICE command.