@Wes Gardner Thanks - it's hypothetical at present, we tend to be working with an architect who would design a building, and we're working around it. I suspect not bothering with stories is the answer! I asked because I know my colleague was having trouble the other day with a sloping site where she couldn't get the trees to sit nicely on top of the sloping 'terrain' (which actually was just drawn as a 3D poly I think rather than a terrain model - still, should be able to get one 3D 'thing' to s