Apple MacBook (13-inch, Mid 2010) - Manual (Page 29)

29 Chapter 2 Life with Your MacBook
 Three-finger swiping works in the Finder and all applications. Swiping three fingers to
the left or right lets you cycle through full-screen applications. Swiping three fingers
up opens Mission Control. You can also set these options to work with four fingers.
 Four-finger pinching displays Launchpad when you pinch your thumb and three
fingers together. Spread the same fingers apart to return to the desktop.
Note: You can specify other functions for many gestures. For details about all available
gestures, choose
Apple () > System Preferences, and then click Trackpad. Click the
checkboxes to turn gestures on or off, and explore the pop-up menus to see the
options for each gesture.