Exactly. What I'm looking for is a Way to Do the core program loop, so that completing a given character aspect goes down a step, and selecting 'back' takes you up a step, producing a new temporary flavour of the previous option which will ultimately replace the previous choice. (Note that while most computer RPGs use this kind of structure, the 3e character generator on the CD with the Player's Handbook doesn't, and I dislike it the more as a consequence. (Names are locked in first, believe it or not. Doh!))

Tiefling