GFNAME
Specifies the type of gradient pattern.
Type: Integer
Saved: Temporarily during the session
Range: 1 (Linear), 2 (Cylinder), 3 (Cylinder inverted), 4 (Sphere), 5 (Hemisphere), 6 (Curve), 7 (Sphere inverted), 8 (Hemisphere inverted), or 9 (Curve inverted)
Default: 1