A little IT trivia question that usually stumps the smartest of the students I come across. I usually lead into it with an admiration of the amount of IT exposure they have grown up with and their knowledge of computers etc. The question is, on your keyboard there is a key to the left of the "1" key with a symbol that looks like a back-to-front and on its side "L". What is it called and how would you use it? They never have a chance to do an interweby search thing for it.