Thanks John, Jesse
Yes, I meant page breaks. Sorry for not being clear.
The raw openxml block approach works well, thanks for that. I need to mull over whether to support a replacement element in the source document (eg the horiz line) or just do something like add page breaks before L1 headers, but either way it should be doable.
Footers: my reference.docx has got a footer, but it contains two elements: an image and a page number. The page number text isn't making it to the pandoc output, but the image is. I'm still tinkering with this to see if I figure out what's going wrong.
regards
Alan