Hi RJ,

re:
> How do you managed this :-)? The only difference I see is that you connected all curves and have just
> 1 curve separated so that it is not a closed one - is that true? Again, many THX (also for the links - I
> will study them immediately :-))!!

The curves you give to Network need to be mappable to a 2D grid, kind of like how lines of longitude and latitude on a globe map to a plane.

If you have the outer one as a closed curve, that arrangement does not map to a 2D grid but it can if it is split in half. Then you'll have 3 long lines which are like lines of latitude on a globe and they meet up at 2 "pole" points like at the north and south pole.

- Michael