On Mon, 08 Jan 2018 13:48:33 -0500,
Clare Snyder wrote:

That is the SERVICE BRAKE adjustment - the parking brake adjustment
is separate - on the cable - and on the VAST majority of vehicles on
the road today the parking brake is totally self adjusting, as is the
service brake. Different schemes are used on different vehicles and
understanding how it is supposed to work is CRUCIAL to doing a safe
and effective repair.

I see your distinction between the service brake and parking brakes!

This picture from the net seems to show them both:
https://s13.postimg.org/6n4sla81j/Rear_Brakes_2.jpg