Apple MACBOOK - Manual (Page 33)

Chapter 2 Getting to Know Your MacBook 33
In addition to using the trackpad button, you can use your finger to click and
double-click directly on the trackpad. You can turn on these features and other
trackpad options in the Keyboard & Mouse pane of System Preferences.
Note: If you find that the pointer moves as you type because you accidentally
brush the trackpad, you can avoid this problem by selecting the “Ignore accidental
trackpad input” option in the Keyboard & Mouse pane of System Preferences.
Using the Keyboard
Your MacBook keyboard has a numeric keypad integrated into the standard keyboard
keys. Keys used for the numeric keypad have a small secondary label.
Num Lock key
Numeric keypad