Turning on VoiceOver causes your Mac to speak everything your mouse
pointer crosses on the screen. Turning on Zoom makes selected areas of the screen appear larger.
324 How to Do Everything: Mac
The Display preferences enable you to reverse the color values on the screen, to use grayscale, and
to reduce or increase contrast.
Hearing
If you have a difficult time hearing the alert sounds of your Mac, you can increase the volume in
the Sound preferences pane, of course, but you also can check the box on this tab to have your
Mac flash the screen when an alert sound occurs.
CHAPTER 14: Making Sense of the System Preferences 325
Keyboard
These preferences are great for users who have difficulty pressing more than one key at a time,
such as is needed with modifier keys. Sticky Keys and Slow Keys are great aids in overcoming
these limitations.
326 How to Do Everything: Mac
Mouse & Trackpad
Use these preferences to turn on Mouse Keys, which allows you to use your numeric keypad in
place of your mouse, and also to resize your mouse pointer.
Summary
You??™ve now seen all the options and features that are literally at your fingertips.
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