| This is a documentation subpage for Template:Uselang.
It contains usage information, categories and other content that is not part of the original template page.
| Note: This Template is used on a lot of pages. In order not to put too much load on the servers, edits should be kept to a bare minimum. Please discuss proposed changes on the talk page first.
Returns the language code of the user interface (defined by user preferences or selected by default on this wiki, or selected by an explicit "uselang=" query parameter specified when viewing the current page).
See Wikipedia:Meta:Template:Uselang for documentation.
- Template:LangSwitch (for translating the UI only, don't use in the content of translated pages)
- Template:Langcode (returns the language code of a translated page, instead of the language code of the user interface)