Board Thread:The Panopticon/@comment-26975268-20130201045831/@comment-188432-20130306172414

We're not going to be changing to reflect the onscreen title cards. That's madness – and will look like a format/spelling error on our part. That's specifically why I said the language should be: I don't mind changing between the words episode and part, as appropriate. But the numerical designation should be in lower case and followed by "of Serial Name" so that there is no necessity to follow the on-screen title cards. Note that this a big enough problem, anyway, since there are times when it's in ALL CAPS and times when it's in Title Case.
 * Episode/Part one of Serial Name

The truth of the matter is, though, that we have chosen to to go with Sentence case in headers, so the logical extension is that we formulate our sentences in a way that sentence case is logically confirmed.

It is not correct — ever — to say "Part Two" in an ordinary sentence because we write in English, not German. Equally "Season 3" should actually be "season 3", but people get lazy with autosuggest, I suppose.