@JSWolf: In the previous Pratchett books I'd edited, there was some variation (or two (or three)) of a section break class as you described. And, like you, I'd replaced it with my <hr/>. In the current book I'm editing, they didn't use such a class. It looks like they're using a pairing of empty paragraph marks and their first paragraph in the chapter class:
Code:
<p></p>
<p class="chapteropenertext">
Good thing I looked. In the previous books, with only one "chapter," there was only the initial use of that <chapteropoenertext> tag. I would have routinely deleted it (Replace All w/ nothing) if I hadn't been looking for the breaks you mentioned. Thanks.