Sometimes the iPad keyboard is covering something you need to see at the bottom of the screen. Undocking it moves the keyboard further up to let you see what it was hiding. For extra fun, try ‘splitting’ the keyboard. Here’s how.
Tap and hold on a letter or symbol on an iOS virtual keyboard to see and select alternate characters while typing. Also tap and hold on the Delete key to quickly delete chunks of text. Here’s how. And as a bonus: find out what Lion does with Tap and Hold!