An angle between a vector and a plane.

ReferencePlane	Specify a reference plane.
ReferenceVector	Specify a reference vector.
Signed	Controls whether the angle is measured as either Positive or Negative when the reference Vector is directed toward the plane's normal, or always positive.

The angle can be computed using Signed or Unsigned options. If Signed is selected, the angle can be measured as either Positive or Negative when the reference Vector is directed toward the plane's normal. Otherwise, the angle is measured as positive regardless of on which side of the plane the reference vector is located.

Name
AgCrdnAngleToPlane