A little curious about this, but, how come the background layers count as tiles themselves as the foregrounds' tiles are, and why are they're in a tileset as if they're part of one, anyway? Weren't they sorta separate from each other?
Well, I've seen tilesets being made time to time, but the foreground and background tiles being part of one whole tileset rather than being in their own tilesets, even if a stage does have many background layers, is what I've yet to really understand. How does it suit well for optimization in developing stages' maps, anyway?
Anyone with knowledge and experience, please answer this.
