The quadrants of mythical fantasy worlds are important to the alchemical geography. There’s a remark about switching west to east from Oz to another author’s world. That confused me, since the text of the books and all the maps I’d seen in them clearly showed it matching:
East=Blue/Munchkins,
West=Yellow/Winkies.
Turns out the Oz map was printed backward the first time it appeared.
Switching directions is real-world canon!