Techno-peasant is trapped in full screen on chromebook!

Help! I’ve turned on full screen in my Chromebook and can’t get out!

I have no idea how I did it, or how to get out.

If it’s like mine (a lenovo) the fullscreen button is over the 5. Looks like a rectangle with arrows pointing diagonally.

Aha! Thank you!

What’s the point of full screen, anyway? Why have a setting where you lose all your settings?

Videos/movies. Certain games.

Ah. I’ve heard of those.