Hi All, I have been given a Macbook Air A1466. I successfully installed MESS 0.158 from the Color Computer Archive, but there's a problem: There's no SCROLL LOCK key on the MacBook Air. I have tried several suggestions, but no luck so far. I'm running MacOS X 10..11.6 (El Capitan). Suggestions? Regards, Bob Devries Dalby, QLD, Australia