A Hinge may be oriented using a U, W, or N direction relative to some reference location on a parent component. Choosing the reference UW location on the Parent will be illustrated by a moving red point on the surface. The user may then choose between the surface U direction, W direction, or Normal (N) direction. Note that the Hinge does not have to be *attached* to the Parent in order to use the reference points. This means that a Hinge may reference a surface direction without being attached to or even placed near the Parent.