The ARCHETYPE_ONTOLOGY class should be more fully defined, so that the data structures
containing terms are clearer. The value of C_OBJECT.node_id should also be explicitly
defined for nodes with no node_id. Currently:
in ADL it is optional
in the ADL tools is is mandatory, and internally set to "unknown" in objects and paths
but this is not displayed in the GUI of the tools, or extracted path views.