I also use the History button in flight as a kind-of Favorites. Before a flight, I pull up any approach plate, airport diagram, departure procedure, etc. that I anticipate needing, then I close them down and revert to the map. Once in the air, if I want to see anything I prepared before the flight, it's one button to the list, and one more to select. So basically I can see anything I need in 2 button presses. Fast and easy. I like it a lot!