You know when you trigger Siri, and there’s that little question mark in the lower left? Ever tap it? Whether you like Siri or haven’t had a reason to yet, I highly recommend it. Not only will Siri show the increasing list of core apps and features it supports—things like starting a FaceTime call and checking your favorite sports scores—you can tap each example to get a (presumably full?) list of commands you can use for each app and scenario. Siri can do a ton of stuff, including moving Calendar events, skipping back in a podcast, showing landmarks in Apple Maps, and figuring out your dinner tip.