<xs:element name="BasePlane" type="SequencedBaseFeatureType" minOccurs="2" maxOccurs="2"><xs:annotation><xs:documentation>Each BasePlane element identifies a base plane for construction of a mid-plane.</xs:documentation></xs:annotation></xs:element>
<xs:complexType name="PlaneMidplaneType"><xs:annotation><xs:documentation>The PlaneMidplaneType defines the construction of a plane that is everywhere equidistant from two base planes.</xs:documentation></xs:annotation><xs:complexContent><xs:extension base="ConstructionMethodBaseType"><xs:sequence><xs:element name="BasePlane" type="SequencedBaseFeatureType" minOccurs="2" maxOccurs="2"><xs:annotation><xs:documentation>Each BasePlane element identifies a base plane for construction of a mid-plane.</xs:documentation></xs:annotation></xs:element></xs:sequence></xs:extension></xs:complexContent></xs:complexType>