Cheers Joe, very interesting that regards the GPIO.0 computed GOTO. You can see why a newbie like me got a little confused, very handy piece of code though, thanks for the explanation.

I had a look at Melanie's Olympic timer, very impressive. She's one very clever lady.

I've always been an admirer of clever people.

Right, I'm off to my bed to dream of COUNTER - IF-THEN- ELSE IF commands.

Really enjoying this, I hope I'm not driving you all to mad?

David