Valentine's day contest.. "xxrequire" typo? Answered

The current contest for V-Day says to enter an intstructable "involving xxrequire".. is this a typo? a programming placeholder? or is there something called xxrequire that the instructables must use? there doesn't seem to be any entries using it.. I am just trying to figure out the requirements so I can throw down my first, and hopefully, first winning, instructable.. any help would be appreciated. thanks