*Below* is the best-fit translation for the Orz's reference to their home dimension. The Orz also refer to QuasiSpace, home of the Arilou, as *above* and to TrueSpace (and possibly HyperSpace) as *the middle*. Therefore it is likely that, in terms of reality phase, the familiar TrueSpace and HyperSpace dimensions lie inbetween QuasiSpace and *below*. Although it is known that QuasiSpace is adjacent to HyperSpace, and that HyperSpace is adjacent to TrueSpace, it is not known if *below* is immediately adjacent to TrueSpace.
It may be that *below* is the same as Pretty Space, the dimension to where the Taalo apparently fled. However, the Orz mention that "to *play* with Taalo, Orz must *spread* into *Pretty Space*," therefore implying that they are separate dimensions.