Mac OS X Leopard - ARCAism

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CHAPTER 4 SYSTEM PREFERENCES
Zoom allows you to zoom in and out of the screen. This is an extension of the zoom functions
for the mouse and trackpad discussed earlier, but it provides a few additional options and
methods of zooming.
The Display section provides options that allow you to alter the display. This includes
switching the display output to grayscale or color, adjusting the display’s contrast, and even
inverting the color scheme of the display (try Cmd+Option+Ctrl+8).
The Hearing tab (Figure 4-59) provides a few options to aid people with hearing issues. The
primary option here allows you to flash the screen when an alert occurs. This option can come in
handy if you work in a very loud (or very quiet) environment.
Figure 4-59. The Hearing tab of the Universal Access preference pane
The Keyboard tab (Figure 4-60) builds upon the keyboard options on the Keyboard &
Mouse preference pane. Sticky Keys provides options for people who may have trouble holding
multiple keys at once, so that they can more easily use keyboard combinations and shortcuts.
The Slow Keys option helps the system ignore accidental key input.
The Mouse & Trackpad tab (Figure 4-61) provides options for people who have trouble
using the mouse or trackpad. Mouse Keys allows you to use the keyboard’s keypad to move the
cursor around on the screen instead of the mouse. There is also an option to increase the size of
the mouse cursor so that it’s easier to track on the screen.