6 things you didn’t know about MediaWiki

… (and were afraid to ask). HTML Tag Scope: If you mix HTML tags with wikitext, which is allowed for so-called “transparent tags”, MediaWiki will check the element nesting independent of the wikitext structure in a preprocessing step (include/Sanitizer.php::removeHTMLtags). Later on, when parsing the wikitext, some elements may be closed automatically (for example at the end of a block). The now-dangling close tag will be ignored, although it is detached from its counterpart by then:

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