You can assign a language to a file in Publish. This can be done from the user interface or by using Excel. If the file’s language matches the marketplace user’s language, the file will be shown on top, before other files with other languages. Changing the language can’t remove a file from a user, it just orders it higher or lower based on the match. The default value for existing and new files is ‘all languages’. It’s not obligatory to set a specific language.