Why are there 2 lids and what are they used for?

These 2 lids allow you to cook in several different ways. When the pressure lid is installed, you can use any of the following functions: -Pressure -Steam -Slow Cook -Sear/Saute When the hinged crisping lid is closed, you can use any of the following functions: -Air Crisp -Bake/Roast -Broil