Stop sign question

It’s to my understanding that you only need to stop at the stop sign and the lines at the other 2 entries only depict where to stop should it be needed and is not an obligation.

Is this the case or do you need to full stop at all entries due to the solid line?

Google drive link because images aren’t permitted

https://drive.google.com/file/d/14Pcw3QazqPyJBp15M\_09ZDY3VbqwVrXG/view?usp=drivesdk