Just for future readers - we should not leave this thread with folks reading that these one sided (not four corners) lights are same as parking lights as they are not.
I don’t know what each country calls them, but in my experience, the lights that Leester is referencing, where they only illuminate on one side and not all four corners are specifically used for parking on dark village or country side streets in France and probably for other European countries. These are not parking lights. Speaking specifically to the French driving code (I have a French drivers license and had to learn the code years ago), these were called Position Lights in France. They were to be illuminated if parked on a dark street. The lights are to be low consumption so battery is not drained overnight as lights are required to be on all night — and only on one side, not all corners.
Some may call these Clearance lights, but the term Clearance lights is also used for trucks to mark the extreme corners of the vehicle.
In any case, the single sided low consumption lights are not the same as parking lights.
Note added: based on the manual link 66Nblu posted, the manual describes these one sided lights as parking lights left and parking lights right. However the manual also calls the four corner lights as Standing Lights (as of 280sl manual). The distinction is that this clearance light function only turns in the two lights on one side and the Standing lights turns on all four corners plus a few other lights.
Just to keep this clear.