<xs:element name="Transform" type="ElementReferenceType" minOccurs="0"><xs:annotation><xs:documentation>The optional Transform element is the identifier of a three dimensional transformation matrix.</xs:documentation></xs:annotation></xs:element>
The optional label attribute is the model entity "nameplate". Normally it can be seen at the entity item in the project tree.
Source
<xs:complexType name="Nurbs23Type"><xs:annotation><xs:documentation>The Nurbs23Type defines the geometric entity 'NURBS_surface(u,v):R2->R3'. Any surface can have an additional transformation matrix.</xs:documentation></xs:annotation><xs:complexContent><xs:extension base="SurfaceBaseType"><xs:sequence><xs:element ref="Nurbs23Core"><xs:annotation><xs:documentation>The Nurbs23Core element defines the mathematical core of this surface type.</xs:documentation></xs:annotation></xs:element><xs:element name="Transform" type="ElementReferenceType" minOccurs="0"><xs:annotation><xs:documentation>The optional Transform element is the identifier of a three dimensional transformation matrix.</xs:documentation></xs:annotation></xs:element></xs:sequence></xs:extension></xs:complexContent></xs:complexType>