As a new user, I'd really like some in depth discussion of scaling maps. For example, drilling down thru a multi-level subterranean cave/dungeon system starting at the surface.

I'm having a fairly difficult time getting my head around the idea because, in my view, it to needs to be scaled in three dimensions. Quite possibly, I'm simply not seeing the forest for the trees as I'm still very low on the learning curve.

TIA.