What is orb magic?

Excuse me, could you possibly elaborate on the concept of orb magic? I'm somewhat intrigued by the term, but I'm not entirely certain what it entails. Is it a form of mysticism or perhaps a type of magical practice? Could you provide some insight into its origins, its practices, and any notable features that distinguish it from other magical disciplines? I'd be genuinely grateful for any information you might have on this subject.