What is flag in PLC?

How many people should be involved in an accident? How do you start a diesel engine truck in extreme cold weather when we do not have heaters or glow plug? What does to? General Motors vision statement? What happens when commercial vehicle brakes your windshield with a rock? Why is car insurance so high for seniors? Front passenger side wheel pulls hard? What things use wheels? What song starts with the sound of car exhaust? How heavy is a 17 inch rim? Does an infraction goes against your insurance? Car lot definition of a lot attendant? What do you call the width of a car? Where are good places to find car monitors for a car? Will your insurance policy go up if you are involved in a collision with a pole? Why doesn't lightning affect people in a car? A good name for solor powered cars? Who is at fault if you hit the car behind you when you return to your lane after going around a car that was pulled over? How do you unlock multiplayer mode on cars mater national? Will your car be covered if you are involved in a hit and run and all you have on the car is PLPD and the car is a total loss?

What is flag in PLC?