Computer keyboards are puzzling things. Like a typewriter, they contain all the keys we need for typing text, numbers and punctuation, but where a typewriter keyboard stops, the computer keyboard just keeps going, giving us a total of 105 keys. Are they really all necessary, and if they are, what on earth could they all do? In this article, I’ll explain what those mysterious extras are for (or, in some cases, what they used to be for) and when you might use them.
