Ubuntu terminal server client - exit full screen

It took me a while to figure out how to exit full screen mode in terminal server client. The toggle keys are CTRL-ALT-ENTER.

Documented right on the GnomePro TSClient website (which Google oddly has trouble finding)

http://www.gnomepro.com/tsclient/

Being new to Linux, I continue having trouble keeping track of Gnome, KDE, Ubuntu, etc (different things that don't even fall into the same category - oh well, I'll learn).