Some iWork users don't feel comfortable with masking, thinking that it takes too much effort. But masking is a powerful design function that lets us achieve exciting effects.
This recipe describes how to use masking to show a detail of a large image as though it were being seen through a magnifying glass.
Let's take the photographic image of the painting Surrender of Lord Cornwallis with George Washington in the background.
We will use the magnifying glass to show him in greater detail.