Represents an object that references a topological object (an edge or a face, for example).
Object Model
Remarks
It consists of an object and a matrix that specifies where in the assembly the referenced object is located. For example, an edge in an assembly may be used many times. The data regarding the construction of the edge exists only once in the file. All occurrences of the edge are references to the original edge with a matrix that specifies the location of the specific occurrence.
