"Squawk VFR" is an instruction by Air Traffic Control when leaving controlled airspace to set the transponder code to the relevant VFR (Visual Flight Rules) code. In the U.S. the VFR squawk code is 1200, whereas in the rest of the world 7000 is generally used. This indicates to Air Traffic Control that the aircraft is proceeding via Visual Flight Rules and they are responsible for their own navigation and terrain clearance.