<xs:element name="ZoneShape" type="ConcentricityZoneShapeType"><xs:annotation><xs:documentation>The ZoneShape element describes the shape of the tolerance zone.</xs:documentation></xs:annotation></xs:element>
The id attribute is the QIF id of the characteristic, used for referencing.
Source
<xs:complexType name="ConcentricityCharacteristicDefinitionType"><xs:annotation><xs:documentation>The ConcentricityCharacteristicDefinitionType defines information that can be common to more than one concentricity characteristic.</xs:documentation></xs:annotation><xs:complexContent><xs:extension base="LocationCharacteristicDefinitionBaseType"><xs:sequence><xs:element name="ZoneShape" type="ConcentricityZoneShapeType"><xs:annotation><xs:documentation>The ZoneShape element describes the shape of the tolerance zone.</xs:documentation></xs:annotation></xs:element></xs:sequence></xs:extension></xs:complexContent></xs:complexType>