Apple MacBook (13-inch, Aluminum, Late 2008) - Manual (Page 24)

24 Chapter 2 Life with Your MacBook
Using the Multi-Touch Trackpad
Use the trackpad to move the cursor and to perform a variety of Multi-Touch gestures.
Unlike typical trackpads, the entire MacBook trackpad is a button, and you can click
anywhere on the trackpad. To enable gestures and set other trackpad options, choose
Apple () > System Preferences, and then click Trackpad.
Here are ways to use your MacBook trackpad:
 Two-finger scrolling lets you drag to scroll quickly up, down, or sideways in the active
window. This option is on by default.