I have a publication basically containing many pages of numbered
paragraphs. I'd like to show in a right-page thumb the paragragraph
range starting with the first on the left page and ending with the
last on the right-hand page. The last-on-page is easy of course, but
how do I achieve the equivalent of retrieve-position="first-starting-
within-previous-page" ? (im working with XEP)
Any suggestions much appreciated.