What is the ZigZag trading pattern?

Could you please explain what the ZigZag trading pattern is, and how it's used in the cryptocurrency market? I've heard that it can help traders identify potential entry and exit points, but I'm not entirely sure how it works. Could you elaborate on its key features and provide an example of how it might be applied in practice? Additionally, what are some potential risks or limitations to consider when using the ZigZag pattern in trading decisions?