Universal Access

Universal Access is a simple concept no OS has been able to provide completely natively. It describes the ability to provide computing abilities to the blind, deaf, and handicap. In Mac OS X 10.2 and 10.3, there are four panes to customise the accessibility settings.

Seeing
Turn On/Off Screen Zooming Inverse Colors (White on Black) Set Display to Greyscale Enhance Contrast Enable Access for Assistive Devices Enable Text-To-Speech for Universal Access Preferences

Hearing
Flash the screen when an alert sound occurs Raise/Lower Volume

Keyboard
Sticky Keys (Treat a sequence of modifier keys as a key combo) Slow Keys (Delay between key press and key acceptance)

Mouse
Mouse Keys (Use the numeric keypad in place of the mouse) Mouse Pointer Delay Mouse Pointer Max Speed

Sources and References

 * Apple Universal Access