Saturn is a silly web server experiment, it uses the http.Filesystem interface to create middlewares (which probably is not a good idea).
Each middleware is named after one os saturn's moons, not because the anology works but because saturn has a shit ton of moons and I'll never run out of things to name the middlewares.
pan is the middleware that converts markdowns to html and pdf.
atlas is the middleware that takes paths and guesses additional extentions for them.
titan is a http.Filesystem backed by upspin.
Most stuff here is experimental. DO NOT use in prod.