Eventually I found it had been working all along-but didn't show anything on screen until it had the first full page of text. I inserted 30 new lines, and suddenly my toy said 'hEllO woRlD'. An hour later I understood alphabet shifting rather better!
-- Graham Nelson
   
Graham Nelson   Name:
Graham Nelson
Type:
Mathematician
Nationality:
English
Birth:
1968
https://www.nutquote.com/quote/Graham_Nelson