I think what he was looking for was that drawing program type node where all the "points" are actually "on" the curve, and they each have "2 handles" (points) that pull out and away from the point to create the curvature. These points can be broken up so the handles work symmetrically, asymmetrically, or "converted to corner point", where they then are allowed to break curvature....

It really is a mess though when trying to work.