This template is used on French pages of Commons, to be able to reload the interface in French for IP users.
Syntax :
{{header/fr}}
{{header/fr|language link page|shortcut|shortcut2|shortcut3|calend=1}}
Parameters :
The language link page is optional. When not specified, the list of languages is inferred from the list of subpages of the current page). If specified it should be a template (reused on all localized pages) that enumerates the list of localized pages with a link to them.
Up to three shortcuts are accepted, however, it looks best with only one (or two if the language links take up two lines.
Optional named parameter text= may be used to change the computed top title ending with "dans d’autres langues :".
Optional named parameter calend= (when non empty) displays a calendar page with the date of the day.