User blog comment:Ducksoup/The Future of Infoboxes on Wikia/@comment-3542404-20150820073131/@comment-3542404-20150820093515

I know about using tabber into the page when you want to use it, but that's not what I'm trying to do. This was a tabber built into the infobox itself, with its own class.

We used it because before the social media buttons we used both switch and tabber, as we are a fanon site and some users wanted to use a tabber and some wanted to use Template:Switch. After the sharing buttons were added, Template:Switch broke, so a tabber was integrated directly into the infobox with its own class so that it looked identical to the old switch template.