Update Auto Group -- Auto Key and Reset Key?

Just noticed two new fields in Update Order Group action.
Auto Key
Reset Key
Cant find explanation of what they do on the forum…

Key parameter in Update Order Group action is useful to have multiple groups with same name. So you may have two Hamburger Menu groups in a single ticket.

Auto Key generates a new unique key for Update Order Group action and all subsequent calls puts orders under same group. Executing it with reset key resets key to another value so next calls for updating group puts orders under a separate group even there is another group with same name.

Well I think I could explain that. Feel free to ask if it is not clear enough.