Collection of references to physical structure parts with a geometry. StructureRef has the following attributes:
| Attribute | Namespace | Type | Use | Default | Fixed | Description |
|---|---|---|---|---|---|---|
| GUIDRef | ocx | ocx:guid | req. | A globally unique ID referring to an entity in the authoring application. The sending application creates and holds the GUID. Used to establish a unique reference to an entity persistent between applications. | ||
| localRef | ocx | xs:IDREF | req. | References to an XML objects in the scope of the current file (internal references) |