When texts are displayed on various ereaders, the pagination is going to vary depending on the screen size, font chosen, etc. There's no way that you can usefully refer to Tractatus p. 15, say. Page references work ONLY when everyone is using the same deadtree text. What ebooks need is a software utility that can overlay any text with the same sort of reference system used for works like the Bible or the Qur'an. Matthew 5: 9 or Sura 24 Ayat 25. Only a system like this can cope with books printed/displayed in many editions and formats. It would have to be written to work with the most common ebook formats, and should be an add-on that could be toggled on or off. Most of the time you wouldn't want it, but when you did need to refer to a certain passage, you could turn it on. Wouldn't this be simple to code, if the book has a TOC with chapter headings? -- Karen Lofstrom