One annoying feature in Word 2011 for Mac is the zoom slider in the bottom right window corner. As you slide it right and left, it zooms in and out in 1% increments. Some of the “in between” zoom levels make the text spacing difficult to read. I wish Word would snap to preset larger intervals as you slide left and right.
Solution: Hold the Control key down while either rotating the scroll wheel on your mouse or doing a two-finger swipe on your trackpad. The window magnification will zoom in and out in 10% increments.
Note: This keyboard shortcut works the same way in Excel and PowerPoint.