Common Operator Info
Holding the control key will show the driver surface in order to select a binding location by clicking the left mouse button (while still holding the control key). The binding location can be anywhere on any face and does not need to fall directly on a vertex.
The mouse wheel controls the drilling depth. The initial depth will pick the surface closest to the viewer. Increasing the depth will skip over surfaces and can allow picking of points within or on the backside of surfaces.
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