What is the purpose of the Kia Sportage's hill-start assist control?

I am planning to buy a Kia Sportage, and I noticed that it has a feature called hill-start assist control. What does this feature do and why is it useful? Any advice on how to use it effectively?

Hill-start assist control is a feature that helps prevent the car from rolling backwards when starting on an incline. It works by automatically applying the brakes for a few seconds after you release the brake pedal, giving you enough time to switch your foot to the accelerator.

This feature is especially useful when driving in hilly areas or when stuck in heavy traffic on a hill. It takes off the pressure of having to quickly switch from the brakes to the gas pedal, making it easier for you to focus on driving.

To use hill-start assist control effectively, simply press the brake pedal while stationary on an incline, then release the brake and switch to the accelerator. The feature will automatically engage and hold the car in place for a few seconds before disengaging.