The year before the year 1

One of Paul's documentation changes that I left out of the update was... +The year before the year 1 is the year 0, the year before that is +the year \-1, and so forth. If I recall correctly, there's no year zero: the sequence (going backward) is... 3 AD, 2 AD, 1 AD, 1 BC, 2 BC, 3 BC... ...or, for "Common Era" fans... 3 CE, 2 CE, 1 CE, 1 BCE, 2 BCE, 3 BCE.. Have our standard-making friends said anything on the matter? --ado