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[John McKenzie]

 Thank to the others who joined in and posted replies.

 Michael, your assumption is correct. To quote my original post, "and I 
want this working on a Raspberry Pi." Doing a superficial look at curses 
and getch it looks excessively complicated. I was under the impression it 
was not multi-platform and Linux was excluded. Searching for getch and 
raspberry pi on the web I see it is not and is available for Raspian.

 Worried about implementing it but I will consider it again. May spend 
time reading about during my treatment tomorrow as the hospital has wifi 
and Internet access and I am allowed to have my laptop there.