The ratio between the up offset (the distance that the target plane is offset upwards) and the vertical extent (the distance between the top and bottom planes of the view frustum at the target distance).

Public Property UpOffsetFactor As Double
	Get
	Set

public double UpOffsetFactor { get; set; }

public:
property double UpOffsetFactor {
	double get ();
	void set (double value);
}