How to Generate a Spelunky Level

I think it's also interesting to think about, for me at least, actually remembering when I first started playing Spelunky HD even and having to talk. And people wanted handcrafted stuff after a while, so it actually became something that maybe shy away from in the messaging of your game. Can I interject if people are interested in learning how the Spelky levels are generated and what parts are handcrafted versus algorithmic?