Rebecca Brady

Hi guys, I'm doing a college assignment at the moment and I've been asked to discuss, Flashing and Post Flashing. I know what flashing is but I'm not sure I have ever heard of post flashing. It's not in any of my notes or books and it isn't on any website that I can find. I was hoping someone here would know, any help at all will be hugely appreciated, even if it's just a point in the right direction. Thank you! :)