This is because it's slowly turning into a general byte heap, for
deferred writing. I haven't checked yet, but most likely they do not
throw everything (ob ref lists, strings, etc) into one giant heap but
do it in a specific order.
This format is very messy, mainly due to everything being referred to by
offsets and writing it is non-trivial. I have begun trying to slowly
untangle the mess though, but I'm starting small.
I guessed the name, it's more like a collection of layers. This actually fixes a
bunch of mistakes (on my part) as I copied the layout from Lumina, but added a
few changes to make it work with modern zones. There's a whole lot more work
here to do, but now it works to parse New & Old Gridania.
