ManyScenes

At this level of operation, the main mechanism by which
a more complex app can be built is the following. There is only
one main thread, but one moves between scenes.

Like with the intro, this creates a window of 650 by 400. This window can be
resized by the user, but it is a good size for a tablet. We are making, after all,
a desktop app.

I think I might be ready to plan the app 'on paper': this is today's problem.

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Got a web browser, initially loading Doxa. Eventually, this scene should
give the user a choice of YouTube music vids.

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