“Buried under general settings is an innocuous little switch that turns on multitasking gestures. This allows you to use several fingers at once to control the iPad,” Gray reports. “Pinching four or five fingers across the screen will return you to the Home Screen of the iPad from any App. Swiping four or five figures upwards will reveal the multitasking bar, showing which Apps are currently running. Swiping down again will hide it. Swipe those digits to the left or right will allow you to change Apps at flicking speed.”
Gray reports, “Made a mistake when typing and wish there was a handy undo button just like on your desktop word processor. Actually there is, but you have to get physical. Simply pick up your iPad, hold it tightly and give it a rigorous shake. A box will flash up on the screen asking if you would like to undo the typing you have just inputted.”
MacDailyNews Note: If you’d rather not get all etch-a-sketchy, there’s also “undo” on your keyboard, just tap the “.?123″ key to reveal it.
More helpful tips in the full article here.