>I've got the tablerevert working ok on a form whereas all changes to a record are undone upon 'Abort' but how do I undo an 'Append blank' if the user chooses to 'Abort' halfway thru?

If you use table buffering, tablerevert will revert the append blank. I usually use a second form with no bound objects to collect required data. If the user does not accept, I discard data -- no harm, no foul. If accepted, I populate a 1 dimensional array and use INSERT-SQL then TABLEUPDATE to add the new record.