Unfortunately, I can no longer quite put my finger on it, probably due to all the time spent going Grrr, Treaty Of London, Council Of Europe, Winston Sodding Churchill etc. etc. etc.
The pre-windowing systems but post-glass-teletype-and-Curses'n'shit software is another thing that deserves a book, probably a coffee table book of screen-shots if anyone still has any. Dear dead days, small boys isn't it? MetaWindows for goal-posts.