You know what's cool: IDEs. They can do block folding. The really good ones just auto-fold function docs because you don't need to see those until you do. It's

You know what's cool: IDEs. They can do block folding. The really good ones just auto-fold function docs because you don't need to see those until you do. It's not just a good trick: it's the right way to do it, and tooling can be (trivially) made to show you only what you need to see until you need to see more.