Board Thread:General Discussion/@comment-4347751-20131002195232/@comment-1330470-20131002205805

DISPLAYTITLE is meant to change the appearance of the title. You might use it to italicize the names of pages, such as this page on Wolfenstein Wiki.

However, it comes with the caveat that by default, it does not allow for very extensive manipulation: you can only italicize or bold (or partially so) or modify capital case or other minor things. You couldn't change the actual words: the title of "Foo" may become "Foo" or "Foo" but cannot be "Bar". As such, unless your page is literally located at "Chicken", you could not change the title of the page to be "Chicken" and your code would be ineffectual.

If you look at mw:Help:Magic words however, you'll see there's a  serverside variable that allows for titles to be changed to any extent. Community Central has been modified in that way: that's why the page User:Sactage says only "sactage". Consider asking Staff to expand the functionality of DISPLAYTITLE on your wiki.