One of the nice updates in Snow Leopard is the addition of four finger trackpad motions to pre-unibody laptop models that have multi-touch capability. Now even more people can trigger expose and change applications with a single swipe. To make sure these features are turned on, you can go to the Trackpad pane in System Preferences.

Screen shot 2009-09-01 at 11.25.33 PM

Photo Credit: nyki_m

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