BUT. This is not the effect found in Mr. Kenner's book. Because Kenner's effect utillises a move that has previously been mentioned in this thread, more precisely the S.W.E Shift, without me going further into the methods used in the book. (It was kind of obvious from the name anyway)
This is indeed a VERY nice elevator, and I've loved it ever since I was taught it a few years ago.
Allan Hagen.