>I am using INSERT INTO auth (id) VALUES (person.id) for the 'Add' button, so, I can not use =TableRevert(.T.), but have to use DELETE (but not PACK) for the 'Esc' button?

You need to really ask a question in order for us to help you more effectivly. But INSERTs can be reverted. Tables can be update implicity without you knowing it. For example, if you have Row Buffering , and you move the reocrd pointer, that updates the row, and in that case, TableRevert won't be able to do anything (cause there will be no unupdated changes).