Fafdom/Rules/Canon Policy

What is "Canon"
Please see the opening for the Wikipedia article on Canon in Fiction.

In fiction, canon is the material accepted as officially part of the story in an individual universe of that story. It is often contrasted with, or used as the basis for, works of fan fiction. The alternative terms mythology, timeline, and continuity are often used, with the former being especially to refer to a richly detailed fictional canon requiring a large degree of suspension of disbelief (e.g. an entire imaginary world and history), while the latter two typically refer to a single arc where all events are directly connected chronologically.

Why Have a "Canon Policy"?
In the past, when the wiki could just focus on the manga and the anime, all that was necessary was making a distinction between what appeared in the manga and what appeared in the anime. However as time went by, the Ent Adventures franchise branched out into more forms of media, such as games, novels, movies, and stage plays. In doing so, many things such as term explanations, plot points, and the like have appeared in one form of media with the expectation that it could carry over into others.

What this has caused over the years where situations where conflicts in what was stated in one form of media would be argued against what appeared in another. Arguments would flare up over what information is to be presented in the article and where. The purpose of this policy is to bring a permanent end to these discussions by giving everything a classification of canon and have them presented as such.