OK, Rik, Frank, and anyone else who's interested, here's something for you to rip apart. All 4 interlocking ring sets are the same. In each group only the underlying Clipview shapes have been moved to alter the over/under view where the rings cross each other. After applying the Clipview operation the underlying shape is selected by Ctrl-Clicking with the mouse. The shapes fill color and line color are then set to 'no color' from the color bar, essentially turning the underlying shape 'invisible'.
Hopefully the mini-tutorial is complete enough for someone who hasn't used the Clipview tool in Xara Xtreme to follow. Have I ever mentioned that I really like using the Clipview tool? Oh! I have, haven't I? I'm thinking it was only once or twice, though.
Enjoy responsibly ,