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• Help:VisualFileChange.js
• As far as I am concerned, flags which should be kept on WCommons and use {{Fictitious flag}} should only be certain flags of fictitious countries (e.g. File:The Man in the High Castle (Ridley Scott's series).svg) – i.e. fictitious flags which exist in media (e.g. w:Molvanîa's flag) or in real life (e.g. File:003 Protest gegen Acta in Munich.JPG) – or fictitious flags created by users who are COM:INUSE (e.g. File:Flag of the Facebook United States.svg), or serve some purpose (humorous or any other) among the WikiMedia community (e.g. File:Drapeau franglais.svg, see also Category:Wikipedia humor). (source)

-->see also COM:HOST