Section 5.4 YouTube Videos
Runestone uses a YouTube API that broadcasts events when a reader interacts with a video. In this way, Runestone can record video-watching as an activity. As PreTeXt output we concede better behavior on small screens (“responsiveness”) to enable this feature in a Runestone version. Various PreTeXt features, such as playlists, are not yet supported—make a request.
The margins here are asymmetric just as a test. And this text is here to see where the video ends.