Comment 4 for bug 170922

This would be extremely useful in technical drawing and in cartography where closed paths often conceptually share significant segments.

In essence we need to be able to make a node a member of more than one path but this is potentially complex with beziers because there would then be nodes that end up linking to three (or more) other nodes.

If this worked it would save me many hours tweaking region boundaries on maps or related gui object borders.