Snow Leopard / referencia de Tablet en la propia página de Apple?

The advanced screen-reading technology in Mac OS X, VoiceOver, now offers a breakthrough new capability: You can control your computer using gestures on a Multi-Touch trackpad even if you can’t see the screen. The trackpad surface on your Mac notebook represents the active window on your computer, so you can touch to hear the item under your finger, drag to hear items continuously as you move your finger, and flick with one finger to move to the next or previous item. You’ll hear how items are arranged on the screen, and you can jump directly to an item just by touching the corresponding location on the trackpad. For example, you can drag your finger around the trackpad to learn how items are arranged in a web page, a spreadsheet, a presentation, or any document with text. The more you touch, the more information you gather.