This little trick is one that most users are not aware of. What this does is auto-arrange your open windows for you, it arranges them neatly (and quickly!). For example, if you have 4 windows opened and they were overlapping each other and you wanted to view all 4 windows, you could resize them all individually and get all 4 windows so that they weren't overlapping OR, you could do it the fast way and change the Windows View.