Cant exit fullscreen mode for app in OS X Mountain Lion

Question

I think I've entered fullscreen with a program called BBEdit. The background turns into the one seen on the screenshot below, and I lose all other windows and, my dock etc. How can I exit this?

There isn't a close icon I can see anywhere, and Esc doesn't work either.

Answer 1

By hovering at the top of the screen I get an icon top right to exit fullscreen mode. There is a bit of a delay before it comes into view though.