[c3534l]

There seems to be some confusion. I am saying the top is American - at least as I was taught it in school. The bottom is the more typically British variant. But I think the reality is the both America and Britain have variations. To an American ear, bracket to mean parenthesis is not just odd, but wrong. But someone already said they consider bracket to be a catchall term, so obviously this is not universal.

Edit: okay, apparently there is just complete bracket anarchy across America and words have no fixed meaning.