Shifts the U = 0 or V = 0 position along a surface that is closed in one or both directions.
To apply: See Shifting UV on Surfaces [Surface and Curve Modeling].
To redisplay: Select the surface, then choose Selection on the Select panel and click the Shift Surface icon.
The Surface Shift property editor does not have any parameters of its own, but instead hosts the Surface Curve Adaptor Property Editor which specifies a location in U or V. As you adjust the Position, the boundary jumps from knot curve to knot curve.
