DOCUMENT_SCHEMA
short long
f Acyclic_document_relationship
e Application_context
e Application_context_element
fr Bag_to_set
e Document
e Document_product_association
e Document_relationship
e Document_representation_type
e Document_type
e Document_usage_constraint
e Document_with_class
dr Identifier
dr Label
er Product
e Product_context
er Product_definition
e Product_definition_context
er Product_definition_formation
d Product_or_formation_or_definition
dr Text