I cant stand DIAD 4 and there are not enough hours in the day for me to harp on about why I hate it so much. However, today I learned a new trick. Did you know that if you press shift twice followed by toggle twice, the keypad lights up and stays lit up even after the DIAD goes into stand by? We never got any training when we lost DIAD 3. We just got given the new one. Training was being told by the sup to "phone the centre if you get stuck and we probably wont know the answer anyway!" It made me wonder if there are lots of other things that DIAD 4 does that I don't know about. So here is your chance to impress me. What do you know about DIAD 4 that nobody else knows?