class function ClassNodeTypeName: string; override;
function QuadricStacks: Cardinal;
Return appropriate field value, or (when it's -1) return global value (from Detail_Xxx variables). In case of incorrect field value, they also take care of calling OnWarning and correcting this value.
function QuadricSlices: Cardinal;
function RectDivisions: Cardinal;
class function URNMatching(const URN: string): boolean; override;