Board Thread:Support Requests - Getting Technical/@comment-9605025-20180630001748/@comment-27345308-20180703001840

Fandyllic wrote: Could you give more context for this? Is this some custom JS? ,  along with   and   and their longer counterparts ,  ,   and   are query parameters that work on any Wikia wiki as parameters for disabling mentioned features if set to zero.

That wiki seems to have had custom JS for setting a random background that was approved, but it has since been removed and it hasn't been submitted. It also has custom CSS for setting the background of that page in their Wikia.css, so that probably explains why both of these parameters are having an effect on the image.