Freeze the approved content
Do not begin final output while facts are still moving. Confirm short headline, essential supporting details, date or offer conditions, clear response or contact route and source or organiser identity and record the approved revision. Dates, prices, addresses and contact details should be grouped by purpose and checked against the source brief.. 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.