This format enables additional features such as chapter progress stats, time left, faster page turns, page flipping (hold finger in bottom corner of screen), footnote previews, image zooming, and faster text selection. (geek1011.github.io)
1] Right click on the white icon for OneDrive cloud in the notification area at the right bottom corner of the screen. (thewindowsclub.com)
This trick only works for windows that aren't minimized — after all, the whole point of this feature is to remove the need for you to tuck away windows in the bottom corner of your screen. (entrepreneur.com)