Many, many thanks to all of you who have responded. I have download GIMP 2.10 and a very quick "dry-run" has yielded some very promising results - but the main page has more buttons, options, selections etc. than I've ever seen and it will take some time to come to grips with all of them. But hey, I'm under house arrest so, sorry that should be self-isolation, so I have the time.......