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many tks for help both of you and arabesque may I suggest ?---do the crossword in pencil first, then go over with a felt tip when its done, another good tip that I got from AB is patch over the words, its fiddly but it works---cut out a small square to fit over the mistake letter, but you have to use the same paper the crossword is printed on, then pritstick the back and paste over, truly you cant see the join, but it takes patience 'cos its not going to fit on your first attempt.