In this tutorial, we learn how to use the zoom feature in Mac OS X Leopard. First, go to system preferences, then universal access. Find the zoom category, then turn it on of off. You will also see the keys that you can press which will make it appear. If you go to the options menu, you will be able to maximize or minimize the zoom. Test this out by zooming in on a page and holding the control key along with the tracking ball on your mouse. When you do this, everything will become far more zoomed in and you will be able to see much more clearly and detailed. Change your settings for this and enjoy!