What does the 'epsilon' button in the Audi A1 do?

I've noticed a button labeled 'epsilon' in my Audi A1 and I'm not sure what it's for. Can anyone explain its function and when I should use it?

The 'epsilon' button on your Audi A1 is actually the hazard light button. It's used to quickly activate all four turning signals in case of emergencies or when your car is stopped on the side of the road.

Some people use the 'epsilon' button to communicate with other drivers on the road. For example, tapping it twice can signal to the car behind you that it is safe to merge into your lane.

In some countries, the 'epsilon' button is used to manually adjust the headlights of the car. However, this feature may not be available in all models of the Audi A1.