I've reached the point where I will soon be placing trees and other vegetation on a new map. The roads, tracks and other objects have already been placed. Using scrapbook data to place the vegetation in large swathes, is there an easy way to avoid placing any on top of roads, track and other existing objects? Aside from being careful to avoid them. But if any do, is there an easy way to remove only those that do happen to land on those roads, tracks or other existing objects?