This is a more advanced operation where two or more shapes overlap
one another, and you want a new shape based on the area where the shapes
overlap. The “AND” is where this shape ‘and’ that shape both exist. It is used
more for visual effects – breaking a set of multiple overlapping shapes into
even more parts. The results of the AND operation are added after the last
object used in the operation.

First, we merged three copies of a circle, then used the AND button.
The result is shown as a red fill on the right.