Exit from Putty full screen

FREQUENTLY ASKED QUESTIONS (Linux)
Q: How to exit from putty full screen mode?

At any time to properly exit from putty full screen mode follow the simple steps below..
Step1: On putty settings -OR-  Right click on Putty from task bar and select "Change Settings.."

Step2: Go to "Window" -> "Behaviour"  and check the option "Full Screen on Alt-Enter"
Done, Now you can toggle full screen and normal window mode with pressing Alt+Enter (Left Alt key)

LABELS: FAQ, Putty