Consistency, probably. American English is the de facto standard language of programming. I write prose in Canadian English, erring toward British English when

Consistency, probably. American English is the de facto standard language of programming. I write prose in Canadian English, erring toward British English when it's ambiguous. I write code in American English, because that's what most people expect. But I write code comments in Canadian English, because comments are prose, unless it refers to a variable name or something.