Template:SITENAME SHORT

The Mediawiki magic word {{SITENAME}} returns the full name of this website; MediaWiki.

{{SITENAME SHORT}} (or {{SITENAME_SHORT}}, same difference) return the much shorter; TFWiki.net.

There's no real reason you couldn't just write it out manually, but calling it like this serves the same purpose calling {{SITENAME}} does: providing easy forward-computability in the event this site ever chooses to change its name to something else, like "Witwickypedia." It also ensures that you won't accidentally format the name differently than all the other instances. ("Wait, am I supposed to bold it or italicize it...?")