One of the nice things about the English language is the difference between U.S. and UK rules, so you can mix and match them to your own taste and people can't

One of the nice things about the English language is the difference between U.S. and UK rules, so you can mix and match them to your own taste and people can't tell you you're doing it wrong. So for example I write "center" not "centre" but "axe" not "ax".