Thanks Axel. I've been using the histogram, but I find zebras handy for quick setup situations. No big deal, I'll probably just leave the zebra on in those cases. I thought maybe the hack, which I haven't done yet, enhanced the function key settings. I guess not.
I'm reading andrew's gh2 book. In it, he mentions assigning rec highlight to a function key. I don't see it as an option in the function key assignment menu. Am I missing something?