To activate a PMDF license, use the command

        $ PMDF LICENSE LOAD
        %PMDF-I-LOADED, 1 license unit loaded

      Had the license already of been activated then the
      informational message

        %PMDF-I-ALREADY, 1 license unit already loaded

      would have been displayed. To deactivate a license, use the
      command

        $ PMDF LICENSE UNLOAD
        %PMDF-I-UNLOADED, 1 license unit unloaded