In Microsoft Word, you may have noticed 3 buttons at the bottom of the vertical scroll? Aren't you curious what they do? Perhaps you either tried them and didn't know what to do with them, or you were too scared that you'd mess up something.
Well, have no fear ... Jensen Harris has written a great post on exactly what these buttons do, that have actually existed since Microsoft Word 97. After you learn what they are, you'll find them quite useful.