Component Type	Contents	Data Types	Source of Data
Intrinsic to Modeler	Solid Object	vertices, edges, faces, features	x,y,z values, vertex list, edge list, feature geometry	GUI input by designer
Structural Additions	Structural Type	Attribute	string (None, Column, Beam, Slab)	Infered in software, with user override
	Materials Properties	Attributes	name strings and values	Sets of defaults by construction system, with user override
	External Loads	Attributes	name strings and values	Sets of defaults by occupancy, with user override
	Structural Geometry	Feature geometries: corners, shapes, edges; Section Properties attribute	corners, shapes; Name Lookup to parameter values ((d,b) or (th))	Defaults by construction system, with user override