05-22-2006, 11:23 PM
Universal Access in the System Preferences offers help. At the top of its list are buttons marked Seeing, Hearing, Keyboard and Mouse. All the controls can be turned on and off with the mouse or from the keyboard.
VoiceOver offers audio feedback for punctuation, repeated punctuation and when text attributes change, and it can speak every character or every word.
When Zoom is turned on, the mouse takes you to that part of the screen you want to see, including the almighty blue apple, along with the rest of the menu bar. I blew up the desktop to max zoom at 800 X 600 resolution, and the word Zoom on the Universal Access preference page filled a 19-inch screen from the left edge to the right. The apple filled every square inch before it spilled over the sides and the top and bottom in all its pixelated splendour.
The Display control also can change the display to black type on a white background and change it back again, and there's a check box to use greyscale in either mode.
Under that is a slider to change the contrast, and the keyboard can be used for that, as well. The mouse pointer can be enlarged until it's so huge it pixelates as badly as the 19-inch-wide apple.
I enlarged the dock to max, then enlarged the screen image to max and rested the mouse pointer on the dock images. The trash can stretched from top to bottom.
Sticky keys is there, too. Like most of this stuff, it's been around since at least System 7.