Well, is it? Apparently there are umpteen (count'em if you want a more precise number) :-) expansions of the acronym "UCB". But the one I care most about is Unit Control Block. (I think had been born before this meaning came into being - but I'm not sure.) :-) Actually Unit Control Block was not one of the listed meanings. So I added it yesterday - but didn't write much on it. You're probably...
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