Imagine it like you're looking through a keyhole at a computer monitor. It's setup so that you can only see the very last letter in what you think is a really

Imagine it like you're looking through a keyhole at a computer monitor. It's setup so that you can only see the very last letter in what you think is a really long sentence someone has typed into a text editor. With your bluetooth keyboard you move to the beginning of the line and repeatedly hit the spacebar, taking note each time what the new letter is that you can see through the keyhole.