SPEAKER: So that's it for our mobile track to learn more about the different APIs available in IOS, check out the Apple developer documentation. You can see here there's lots of different topics from graphics to writing an app for car play. Apple's documentation is really, really thorough and has lots of different examples to help get you off the ground on a variety of topics. In this track, we've seen a variety of topics across IOS. We learned about Swift, the programming language. We learned about writing views using storyboards, actions, and outlets. We learned about writing controllers. We learned about modeling data, saving that data to disk, and hopefully with all of this knowledge, you'll be able to create your own great iOS apps. And I'm really excited to see what you create. My name is Tommy, and this is CS50.