The DefiningPoints element gives a list of points which defines the nominal point-defined curve. The nominal point-defined curve passes through these points.
<xs:element name="DefiningPoints" type="DefiningPointsNominalType"><xs:annotation><xs:documentation>The DefiningPoints element gives a list of points which defines the nominal point-defined curve. The nominal point-defined curve passes through these points.</xs:documentation></xs:annotation></xs:element>
<xs:element name="Plane" type="PlaneType" minOccurs="0"><xs:annotation><xs:documentation>The optional Plane element is the plane in which the point-defined curve feature lies.</xs:documentation></xs:annotation></xs:element>
<xs:element name="Constructed" type="PointDefinedCurveConstructionMethodType" minOccurs="0"><xs:annotation><xs:documentation>The optional Constructed element signifies that the point defined curve is constructed and provides details of the construction method.</xs:documentation></xs:annotation></xs:element>
The id attribute is the QIF id of the feature, used for referencing.
Source
<xs:complexType name="PointDefinedCurveFeatureNominalType"><xs:annotation><xs:documentation>The PointDefinedCurveFeatureNominalType defines the point-defined curve feature nominal information for an individual point-defined curve feature.</xs:documentation></xs:annotation><xs:complexContent><xs:extension base="CurveFeatureNominalBaseType"><xs:sequence><xs:element name="DefiningPoints" type="DefiningPointsNominalType"><xs:annotation><xs:documentation>The DefiningPoints element gives a list of points which defines the nominal point-defined curve. The nominal point-defined curve passes through these points.</xs:documentation></xs:annotation></xs:element><xs:element name="Plane" type="PlaneType" minOccurs="0"><xs:annotation><xs:documentation>The optional Plane element is the plane in which the point-defined curve feature lies.</xs:documentation></xs:annotation></xs:element><xs:element name="Constructed" type="PointDefinedCurveConstructionMethodType" minOccurs="0"><xs:annotation><xs:documentation>The optional Constructed element signifies that the point defined curve is constructed and provides details of the construction method.</xs:documentation></xs:annotation></xs:element></xs:sequence></xs:extension></xs:complexContent></xs:complexType>