Helix Frequency
The Helix effect is a sinusoidal displacement added to the origin of each of the pot's rings. The resulting effect resembles a corkscrew. Helix is similar to Twist, except that Twist affects the radius whereas Helix affects the origin. This property sets the frequency of the helix, as a normalized angle; it determines the number of 360° rotations over the height of the pot. Note that this property has no effect unless Helix Amplitude is also non-zero.
