They are a bit like do-notation in Haskell, but with a few extra things. They are also like a more restricted / opinionated version of Clojure macros. What's r

They are a bit like do-notation in Haskell, but with a few extra things. They are also like a more restricted / opinionated version of Clojure macros. What's really cool is that things like ```async function *``` from JS can be implemented as libraries in F#.