Check purchase facts, compare invoices, request missing proof. Every one is ready to run, and you can adjust it in plain language.
Compare revised proofs with requested edits to find stray changes.
See whether the requested proof fix landed and what else changed, right in the review thread before you approve the revision.
Check revised page proofs against corrections noted in the thread.
See which proof changes are complete and which still need work. Your team gets a fix list in the review thread.