Board Thread:Support Requests - Getting Technical/@comment-5559431-20130417184927/@comment-10688548-20130417201453

Those are called "interlanguage links" (see the Help page). I see you have figured out how to put them in the page, but you should know that these links have to be enabled for every wiki before they can be used.

EN-to-ES and EN-to-PL links are already set up, I see. But I will set up ES-to-PL for you, and then you should be able to put them in. If you want to request more links, have a look at Community_Central:Interlanguage_link_requests.