All of the sudden, since just the other day, when I activate the 'UNDO' function on my 28S, it returns the message 'UNDO Disabled'. Did I inadvertantly trip a flag?? How do I re-set it?? Any help is appreciated. I got the thing back in college, and still use it quite a bit, but this is putting quite a crimp in my processes :-(
Ken
28S 'UNDO'
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