Return of Hadrach
The structure of the muli-verse is a subject of great debate among the mortals of Yerth
The structure of the planes was set down in the time of the gods, even before the First World. Codified in the Sanctioned Laws, it rules the structure of all the planes, how they connect and how the inhabitants of each plane are allowed to interact with each other.
Inner planes Those planes that make up the universe – Prime Material, Elemental, Positive Material and Negative Material. These planes are little different than those listed in the Pathfinder Gamemaster’s guide.
Outer planes Those planes that are the realms of Gods and outsiders. Fully fledged outer planes such as Elysium, Abyss, Limbo and Nirvana as described in the Pathfinder Gamemaster’s guide. It is also where an uncounted number of demi-planes exist.