The snowmobiles were the most difficult - the wind blew snow into every possible nook and cranny, including around the track and under the engine cover.

enables control of Exaile via the sound menu indicator. It supports all of the functions you’d expect: forward, backwards, pause/play, track info and cover art.

In this part, we'll cover how you can use an external systems model as part of the bottom-up track of the "meet-in-the-middle" approach.