Canon\'ka-nen\ (n.) — a sanctioned or accepted group or body of related works. There is a huge number of publications on the Warhammer 40,000 universe, some released by Games Workshop and some fan-written. Here on the Warhammer 40k Wiki we only use information and images, charts or diagrams contained in the official publications of Games Workshop, Black Library, Citadel Miniatures, Forge World, White Dwarf or Fantasy Flight Games, as well as information and images drawn from all officially-licensed Warhammer 40,000 personal computer, mobile and console video games. We use these sources so that we are able to check in-universe facts, and so that people know where to find more information if they are interested in a subject or wish to view the original source of the information.