This sort of interface problem is common with clocks too. We have a clock at work that signals break time; it has four alarms but you have to manually turn the

This sort of interface problem is common with clocks too. We have a clock at work that signals break time; it has four alarms but you have to manually turn them off. One time I had to be the one to turn it off, and I looked at the back. Four identical, round buttons - simply labelled "A", "B", "C", and "D". WTF? I need the manual to look up what the buttons do!