Begin deleting whole words at a time by holding down the backspace key on your virtual keyboard for 4 seconds.

If you have written a lot of text in an email or a pages document or anywhere else, you can quickly delete large sections of text. To do this on your iPad, iPhone (Mini), or iPod Touch in iOS 6 simply hold down the backspace key for 4 seconds. For the first 4 seconds, the normal delete function will happen where one letter is deleted at a time. Then, after 4 seconds, your device will enter rapid delete mode where it will delete entire words at once as long as you hold the backspace key. Remember, if you delete too many keys, you can always use the Shake to Undo feature to recover deleted text.