Started working through the basic structure of the XHTML output. The headings (APA stuff) were a bit tricky, but I've figured it out; headings are always h2 down to h6 in XHTML tag terms, but they also get a class attribute which is based on the level they're at and the number of levels, so we can style them appropriately. Lists, tables and quotes are handled, as are names and abbreviations. There are still titles, figures, graphics, notes, mentioned/soCalled/term etc., and the dreaded bibliography to do. There's also the wrinkle that appendices may have nested headings, and those headings are styled based on THEIR nesting level, not the levels in the main text. However, I think it's reasonable to assume no more than three levels in appendix headers, so we can avoid a lot of calculation that way.