Requirement_model_assignment_arm
short long

e	Document_tbd
e	Functional_requirement_model
e	Functional_requirement_model_assignment
d	Functional_requirement_model_assignment_item
e	Imposed_design_requirement_model
e	Imposed_design_requirement_model_assignment
d	Imposed_design_requirement_model_assignment_item
e	Interface_requirement_model
e	Interface_requirement_model_assignment
d	Interface_requirement_model_assignment_item
e	Interface_tbd
e	Part_tbd
e	Physical_property_requirement_model
e	Physical_property_requirement_model_assignment
d	Physical_property_requirement_model_assignment_item
e	Reference_requirement_model
e	Reference_requirement_model_assignment
d	Reference_requirement_model_assignment_item
e	Temporal_requirement_model
e	Temporal_requirement_model_assignment
d	Temporal_requirement_model_assignment_item
e	Transformation_tbd