How to exit full screen in tightvnc

Q:
What is the keyboard shortcut to exit from full screen in tightvnc viewer?

A:
Everyone gets stuck here, tightVNC will go full screen and will not come back. :(

You must be looking for the key combination ctrl+alt+shift+F
Some clients will work in other shortcuts. If the above combination is not working,Try the following combinations also
Esc
ctrl + Esc
F11
alt+f11
F8
alt+ctrl+ F9