Fun with Trackpad on Macs
Just found some cool features on my Macbook. The trackpad has a lot of nifty gestures
, for example, you can scroll if you use two fingers on the trackpad. An additional cool feature is the zoom function. Hold control down will scrolling and you zoom in on part of the desktop. This is really useful when doing a demo.
To enable this, go to System Preferences and select Keyboard & Mouse. Then select the Trackpad tab.

The zoom feature is also available for desktop Macs (Mac mini, iMac, etc). You can find the preference setting in the Mouse tab. You need a mouse with a scroll wheel or similar.