Freeze the approved content
Do not begin final output while facts are still moving. Confirm dominant headline, event or proposition, date and location, one response route and organiser or sponsor identity and record the approved revision. Dates, venue, booking route and sponsor names must be final before the high-resolution file is released.. 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.