I've looked at other document events, and none seemed to fit my situation. The BeforeClose or BeforePrint might work, but the doc would be in an incorrect state until that happened. I don't want that - the user might screen-shot the doc, or use his phone to snap an image and send that off. I want the doc to be correct always, or as always as possible. Sure the user could make a snap after changing text in a field, but before leaving the field, but I can't babysit every possible situation.

However, Content Controls sound promising. I've never worked with them - most my intensive programming with Word was years ago, but I'll have a look. Thank you for the idea.