Multilingual file captions are part of MediaInfo, an extension for handling structured data for files. A caption contains a short description about a file. Captions are limited to 255 characters in length; captions cannot contain markup (like Wikitext links or HTML) and do not support external links. You can add captions in different languages.
Captions are added by clicking on the pencil icon in the top right corner. This opens up the editing view.
Translations can be done once an initial caption is added. A language is selected, then the text is entered.
Translations can be added in as many languages as MediaWiki supports.
Additions of file captions are logged in the page history with an automatic edit summary.
Captions can be added during the file upload process using the Upload Wizard. The option to add caption is in step four, "Describe." The difference between a caption and a description is explained.
Translations of the caption can be added at this time as well.
Any user can remove a caption. This is done by clicking on the trash can icon to the right of the caption, or "undo" in the page history.
Removal of file captions are logged in the page history with an automatic edit summary.
Caption removal can be reversed using the Undo feature.