<xs:element name="IntersectingAxes"> <xs:complexType> <xs:sequence> <xs:element ref="ifc:IfcGridAxis" minOccurs="2" maxOccurs="2" /> </xs:sequence> <xs:attribute ref="ex:itemType" fixed="ifc:IfcGridAxis" /> <xs:attribute ref="ex:cType" fixed="list-unique" /> <xs:attribute ref="ex:arraySize" use="optional" /> </xs:complexType> </xs:element>