PHYSICAL_CONNECTIVITY_DEFINITION

e	Make_from_connectivity_relationship
d	Pcd_document_reference_item
d	Pcd_groupable_item
d	Pcd_requirement_assigned_item
e	Physical_connectivity_definition
e	Physical_connectivity_definition_domain
e	Physical_connectivity_element
e	Physical_connectivity_layout_topology_link
e	Physical_connectivity_layout_topology_node
e	Physical_connectivity_layout_topology_requirement
e	Physical_connectivity_layout_topology_requirement_assignment
e	Physical_unit_network_definition