Name attribute
Type: "part", "assembly", "instance", or "unknown"
Whether it's a simple shape (not compound/assembly)
Whether it's an assembly
Whether it's a reference/instance
Whether it's a component in an assembly
Whether it's a free shape (top-level)
OptionalrefReference label (for instances)
OptionalchildrenChild labels (for assemblies)
OptionalshapeShape type (vertex, edge, wire, face, shell, solid, compound, etc.)
Label entry string