If you use the Create Intersection wizard to create intersections, you may want to create customized assembly set s for intersection creation. Assembly sets are XML files, used to organize assemblies for creating intersections. Assembly sets reference groups of existing assemblies and may reference null assemblies . Null assemblies are used as placeholders, when complete assemblies are unavailable.
For more information on assembly sets, see Assembly Sets.
For more information on null assemblies, see Null Assemblies.