Changes display smoothness setting for NURBS curves/surfaces to default quality. Specifically, the
four values under the Parametric - Steps group on the Hardware Display tab of the object's Geometry
Approximation property page comprise these 'smoothness settings'.
Geometry approximation specifies how polygons, surfaces, and curves should be tessellated
(divided into triangles at rendering time). The various methods of approximation let you
reduce the number of triangles in the geometry of an object and still render a very smooth surface.