There is no obvious tie to actual residential areas, in some cases. I saw individual buildings marked as that area, as well as plots of property in rural areas without any housing on it marked the same. The marking seems to be overused in and not following the idea of what a residential area is. And es, I definitely didn't fully follow what I just said as well. Much that I removed seemed extraneous, considering the actual area. I live here in this area, and much has no logical reason to be marked as such.