The dishwasher has a small cup in the corner

What is this Feature?
Soap Dispenser Refill Port:

In many modern kitchens, this small cup is actually the refill port for a built-in soap dispenser. It allows users to easily refill dish soap or hand soap without unscrewing the dispenser bottle underneath the sink.
Air Gap (For Dishwashers):

Alternatively, it might be an air gap for the dishwasher, a feature required in some regions to prevent contaminated water from backing up into clean water lines. It is designed to improve water drainage and maintain hygiene.
How to Use It?

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