I read E-books with the Kindle app on my iPad Air. Some of these books have endnotes, and I haven't been able to figure out how to toggle between the links in the text and the notes themselves. Supposedly, one should tap the link to get to the note and tap Back to return to the text. When I tap the link, all I get is a bar at the bottom of the page that tells me the percentage of the text read and the page number. Can anyone tell me how to toggle between the text of a book and the endnotes?