is there anybody out there who is playing Profound Red and be willing to exchange some hints and clues ... I'm stuck now looking for golden symbols in the Grafitti thingy to match the box

I was looking at some video walkthrus but couldn't find the right one

love these games, but they make me nuts

They make me nuts too.

Among all the graffiti rubbish, you have to find 3 golden symbols. You can look at all of them in close-up. You can exit the building through a large window. One of them is just outside that window. One is on the same wall as that window, but inside the building, and another is on a pillar in the middle of the building.