Pass on decisions, carry revision notes, open supplier setup. Every one is ready to run, and you can adjust it in plain language.
Show the designer which PDF marks apply to the current proof.
Your maker gets the marked PDF and a clear fix list on the right task, with the reviewed version named.
Give designers a fix list tied to the reviewed PDF revision.
Your maker gets a clear fix list tied to the PDF revision reviewers saw, so the next round starts with the right changes.