I really don’t think they look like radio buttons.
The Catmage Chronicles
Andy thought he was going crazy when a talking cat showed up at his front door. He couldn’t have been more wrong.Goldeneyes is a Catmage – a cat with human intelligence and magical abilities. Andy is an eighth grader who is smart, impulsive, and trying to avoid the school bully at all costs. A prophecy threw them together. There’s just one problem: Goldeneyes can’t stand humans.The Catmage world is heading toward war. Goldeneyes and Andy must try to stop the enemy from getting stronger. And they must save a powerful Catmage who’s been kidnapped. For Goldeneyes, it’s personal. That Catmage is her grandmother.Andy and Goldeneyes must try to put aside their differences. If they can’t, the enemy will soon be too powerful to defeat…
Boy, that IS random. No, they never did – they were just supposed to operate like radio buttons (one active at a time).