<xs:element name="DeterminationMode" type="CircleMeasurementDeterminationType"><xs:annotation><xs:documentation>The DeterminationMode element is the means by which the circle feature measurement is determined.</xs:documentation></xs:annotation></xs:element>
The id attribute is the QIF id of the feature, used for referencing.
Source
<xs:complexType name="CircleFeatureItemType"><xs:annotation><xs:documentation>The CircleFeatureItemType defines an individual circle feature.</xs:documentation></xs:annotation><xs:complexContent><xs:extension base="CurveFeatureItemBaseType"><xs:sequence><xs:element name="DeterminationMode" type="CircleMeasurementDeterminationType"><xs:annotation><xs:documentation>The DeterminationMode element is the means by which the circle feature measurement is determined.</xs:documentation></xs:annotation></xs:element></xs:sequence></xs:extension></xs:complexContent></xs:complexType>