I'm glad to see this. I love Will's An Elegant Puzzle, but it's very clear when reading it that it's missing examples and guidance on how to write these documen

I'm glad to see this. I love Will's An Elegant Puzzle, but it's very clear when reading it that it's missing examples and guidance on how to write these documents he posits are so essential. He says here that most companies/orgs don't actually write this stuff down, and he himself only did it at his most recent gig. Has anyone seen this done well in their own companies? Are there well-known companies with a culture of this kind of writing, that is generally agreed to be effective?