All this talk of displacement maps started me thinking about what they actually are. It's my day off so I'm entitled and the fact that I have a million and one other things to do isn't important. I am one of the best at displacement activity so it should be a doddle. So for my efforts see above. Not exactly enthralling but I've learned something valuable. It always takes longer than you think and the result is not always worth the effort. There I shall leave it for today!