A reference to a parent object in case of hierarchical trees. This is used to create complex tree like hierarchies  | 
                           
| Attribute Group | LinksAndReferencesGroup | 
<xs:attribute name="Parent" type="ReferenceType" use="optional"> <xs:annotation> <xs:documentation>A reference to a parent object in case of hierarchical trees. This is used to create complex tree like hierarchies</xs:documentation> </xs:annotation> </xs:attribute>  |