It's the crazyest stuff I've ever seen for making mind maps in absolutely no time, and it's really Mac-adapted, just like I like to work with my Mac. Of course, there are more sophisticated programs for mindmaps, but why buying a Ferrari just to get a newspaper around the corner? The topic is, that there is no explanation how to use it, because there is no need for it. It's absolutely self-explaining, by trial and error. Don't hesitate to acquire this really helpful software. And it works with all the well known shortcuts.