|%
+$  metadata-hook-action
  $%  ::  %add-owned: make a group's associated metadata
      ::  accessible to foreign ships in that group
      ::
      [%add-owned =path]
      ::  %add-synced: mirror a foreign-hosted group's associated metadata
      ::
      [%add-synced =ship =path]
      ::  %remove: stop mirroring / making data accessible to others
      ::
      [%remove =path]
  ==
--