Confusingly, the alt key that has had the word 'opt' put on it on some Apple keyboards and not on others... http://en.wikipedia.org/wiki/Option_key http://en.w

Confusingly, the alt key that has had the word 'opt' put on it on some Apple keyboards and not on others... http://en.wikipedia.org/wiki/Option_key http://en.wikipedia.org/wiki/Option_key