Just noticed that on my bill from the garage that I was charged for adjusting the washer jets on my van when it had a few repairs done after it's MOT failure.
Call me old fashioned but I preferred them when they were adjusted so that the screenwash actually hit the windscreen and did not go over the roof. And the reason that one of them was aimed low was so that when I used them the wiper spread the screenwash all over the screen ensuring a clean windscreen.