Command-Option-* to turn it on
Command-Option-plus/minus to zoom in/out
Command-Option-\ to toggle smoothing.
[Editor's note: There's a lot of power in the zoom feature of Universal Access. If you hit the Zoom Options button in the prefs panel, you can specify a minimum and maximum zoom size. Try dragging the "maximum" slider to something like 10x, and then move and return the "minimum" slider to 1x. Now when you hit the zoom-in key, it will instantly jump to the maximum value you set. Hit the zoom-out key, and it returns to normal view. If you ever need more than the maximum, just hit the zoom-in key again while zoomed in.]

