A couple of titles were missing from the index page, and the contents of the last "poem" (an excerpt) were not showing up. This was because the XSLT was looking for a title[@type='incipit']; it now uses any title element it finds if there's nothing matching that. The body of this excerpt is les than a line, so it was wrapped in an <ab> tag rather than <lg> or <l>; I'm now handling <ab> elements in the XSLT too.