Apple iPod touch iOS 4.3 - Manual (Page 31)

As you type, each letter appears above your thumb or finger. If you touch the wrong
key, you can slide your finger to the correct key. The letter isn’t entered until you
release your finger from the key.
Delete the previous character Tap .
Type uppercase Tap the Shift key before tapping a letter. Or touch and
hold the Shift key, then slide to a letter.
Quickly type a period and space Double-tap the space bar. (You can turn this feature on or
off in Settings > General > Keyboard.)
Turn caps lock on Double-tap the Shift key. The Shift key turns blue, and
all letters you type are uppercase. Tap the Shift key again
to turn caps lock off. (You can turn this feature on or off in
Settings > General > Keyboard.)
Show numbers, punctuation,
or symbols Tap the Number key. Tap the Symbol key to see
additional punctuation and symbols.
Type letters or symbols that aren’t
on the keyboard Touch and hold the related letter or symbol, then slide to
choose a variation.
31 Chapter 3 Basics