They do call our good old Canadian Robertson a "square recess".
for more trivia, did you know that the screwdriver (created in Europe)
is the only major mechanical device not independently invented by the
Chinese? (from One Good Turn: A Natural History of the Screwdriver and the Screw, Witold Rybczynski, Harper Flamingo Canada, Toronto, 2000)
I came across this blog entry when I was looking up the beep software to play tones through my linux server speaker (connect disconnect, finished booting, rebooting, etc...), as it normally runs headless.