Hi Michael, I was not thinking of a polyline or freeform continuous curve etc, I was thinking more where 2 or 3 lines/curves are drawn based on snap points and how easy it is to snap to a far point rather than the end of the line/curve aimed for, which can then leave a constructed set of curves open when thought closed (even if all lines are planer), so then such as extrude will not cap (as simple example)


- manz