PC World – Mac users don’t always like to admit it, but every now and then Microsoft has a good idea or two. One such idea is Windows 7’s Aero Snap feature: Drag a window to the left or right side of the screen and it’ll “snap” to fill off that half of the screen. Or drag it to the top of the screen to make a window take up the entire screen. Drag the window away from the edges and it returns to its original size.