I never paid attention to the pointer nub on my X220, considering it an outdated curiosity. Then I read somewhere that you can use the middle trackpad button and the nub to scroll. It was then that I paid closer attention to the layout. The trackpad buttons, are in disguise. They are actually TrackPoint buttons! The buttons are located just under the space bar, and the TrackPoint is, of course, embedded right at the center of homerow. It’s taking a bit of learning but I’m warming to the idea of using the TrackPoint and the TrackPoint buttons instead of the touchpad. The problem with this, of course, is that it’ll confuse me when I use the MacBook.