Translations:Manual:Coding conventions/136/en

MediaWiki HTTP responses output HTML that can be generated by one of two sources. The MediaWiki PHP code is a trusted source for the user interface, it can output any arbitrary HTML. The Parser converts user-generated wikitext into HTML, this is an untrusted source. Complex HTML created by users via wikitext is often found in the "Template" namespace. HTML produced by the Parser is subject to sanitization before output.