An excerpt from The Principles of Hidden Truth:
The canons of the Ancients speak of four worlds:
- The True World, called sha-Arthan in the Exalted Speech of the Makers.
- The Old World, the Lost World, out of which the Makers first called Man.
- The False World, sometimes called the Mirror World, a spectral reflection of the True World.
- The World Between, commonly called the Void.The Old World is forever barred to Man by the will of the Makers and the maledictions of the Eternal Gods. The False World is the domain of ghosts and, though attainable through sorcery, to be shunned by the living. The Demon Races claim the World Between and jealously guard their realms against intruders from other worlds.