Freeze the approved content
Do not begin final output while facts are still moving. Confirm front-cover promise, reader problem or context, key benefits or sections, supporting evidence and contact and next step and record the approved revision. Use short comparison blocks, service lists or itinerary details only where they help a reader make a decision.. Run spelling, design and accessibility reviews, then save the editable .mpub before creating a PDF. A later correction needs a new proof; editing after approval without repeating review breaks the audit trail.