Do you know how to take screenshots on Mac OS X ?

Mac OS X is for sure, if not the best, the most complex OS ever developed. I'm talking now especially about its shortcuts, which are very various and not guessable in any case. For example, do you know how to take a screenshot into a Mac OS X based computer? All you have to do is to press at the same time the following buttons: "Shift", "cmd" (Apple key), and number "3". A screenshot will be instantly sent to you desktop. This is really simple. Give it a try! :)