What does “Unlock the key” on XTOOL PAD2 mean?

Xtool X100 Pad2 question: what the “Unlock the key ” option means?

Look at the image below, it is ” Débloquer la clé” (meaning “Unlock the key “):

“Unlock the key” means:

For example, if you’re going to program a key in a Fiat, you’ve got to generate a dealership key, right? when you do that, this key will be locked to that car, if you can’t program it in that car, it won’t give it to any other car, so this option serves to unlock the key to become a virgin again, and you can generate another one turn dealership key on another car.

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