What should a content brief tell the reviewer?

A brief often explains what the writer should produce but says little about how someone will approve it. That can lead to a draft being judged against requirements nobody wrote down.

My example brief would start with the reader's question and the answer the page must make clear. Then it would list necessary sources, examples, relevant internal links, claims needing verification, and the person responsible for review.

I would also include an “out of scope” box. A beginner guide does not need to become a complete reference manual to be useful.

What belongs in the review criteria, and what should remain the writer's judgment?