When entering a a point have Popup box appear as with other entrys ( Circles, rectangles, etc. ) and the ability to select Relative to Origin, Last Point, or to a selected point.
Also as an option to have a popup Table to enter a series of points, useful for things like entering a set of points to create an Airfoil.
The same for entering the points foe a Spline Curve.
Thanks,
Jim Mahoney