nobody has yet responded to the question about scratchings, similarly here is an article about a monumental and recognized artwork created by cleaning: https://publicdelivery.org/william-kentridge-rome/ The article calls it a "mural" in the title, in osm it wouldn't currently be, because our definition requires it is "painted or applied directly on a wall, ceiling or other large permanent surface.", i.e. it doesn't cover the case of creating an image through removing.
_______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
