Hi John

>Please excuse what's surely a very basic question, but I've been reading about buffering, tableupdate(), tablerevert(), etc., but am not finding an answer to this one.

Very simple. Use a single powerful approach instead of a limited one. IOW use Table Buffering instead of Row Buffering.

Row Buffering saves the changes as soon as the record pointer moves. Everything you can do with Row Buffering you can do with Table Buffering.

If the user clicks ADD, use append blank, that way the added record is in the buffer. To undo it tablerevert. To edit, simple start editing. To undo it table revert. Simple, effective.

BTW, I always set the form's buffermode to 0 - None. When I used tables/views in the data environment, I set the tables I wanted to edit to optimistic table buffering - 5. As a result, I didn't have to do anything to picklists or other non-editable tables.