User blog comment:Brandon Rhea/Why Fandom Evolves: A Look Ahead in 2017/@comment-24264457-20170111202653/@comment-3474542-20170113222850

Both of your bullet points currently exist. Technically, the link Bruno Mars should go to the default Wikipedia page, based on the user's default language (e.g. - www.wikipedia.org/wiki/Bruno_Mars). However, because of how WikiMedia's interwiki mapping works, it currently points to the page on the English language version of Wikipedia. This mapping may, or may not, change to more closely resemble that of other multi-language projects in the future (e.g. something like Project:Language:PAGENAME ).
 * The list of all mainspace articles on a wiki can be found on the special page Special:AllPages.
 * Links to non-English Wikipedia

You can force a link to use any existing language version of Wikipedia (or any other mapped WikiMedia location for that matter). If you want to link to a page in a specific language, you must include the language code in the link.

e.g. the various Bruno Mars pages - Bruno Mars (default - currently English, may change in the future)
 * Bruno Mars (French)
 * Bruno Mars (Korean)
 * Bruno Mars (Romanian)

Note that I used Hangul in the link for the Korean Wikipedia page. Some versions of Wikipedia use different alphabets (or spellings) than the English language version. For these links, you will need to use the alphabet and spelling used (for the page's title) on that version of Wikipedia.

e.g. - pages for "Songwriter" on various wikis would be...
 * Songwriter (English)
 * 송라이터 (Korean)
 * Compositor_de_canciones (Español)
 * Auteur-compositeur (Français)

You can find more information about inter-language links at Help:Interwiki links and Help:Interlanguage links.