What is the function of the automatic gear shift in a Vauxhall Astra?

I recently purchased a Vauxhall Astra and noticed that it has an automatic gear shift. What is the purpose of this feature?

The automatic gear shift is designed to make driving easier and more efficient. It allows the car to shift gears automatically, eliminating the need for the driver to manually shift gears.

The automatic gear shift is also beneficial for traffic situations, as it allows for smoother acceleration and deceleration without constant shifting.

It's important to note that the automatic gear shift does not mean you can completely ignore shifting gears. It's still important to pay attention to the road and use the gear shift when necessary.