Perhaps you're now thinking "well isn't it lazy of you to ask in this thread instead of researching it yourself?" And if you're thinking that then you misapprehend what this site is about. By asking the question, I was hoping that someone knowledgable who likes sharing their knowledge would contribute an explanation, and in the discussion thus-generated perhaps interesting things would occur or be learned, or at any rate it might be enjoyable to participants.
Hopefully you can see now that your replies are way off-base. If you don't want to explain this subject then that is perfectly fine; you don't need to tell us that.