I have been out for a few days, thanks for the replies.
I expected (the content of) both replies. Yes, I do want to stay within standard DCL - but I could hope.
Lee, FYI, with your helpful examples I have written dialog boxes that can be repositioned, can be dismissed to get points on screen, and with edit boxes that recalculate contents of all relevant edit boxes on the page. Pretty much everything I really needed. Fancy would just be icing on my cake.
I think I am getting "there", and I also think I owe you a beer.