One/Two Columns
You can read eBooks using ePub Reader in a single or in multiple columns. As one and two column configurations are the typical way of reading books, the reader provides display options to toggle between the two. Also available through the display options is the "Auto" setting which automatically toggles from one to two column configurations when rotating your device from portrait to landscape orientation.
Vertical Scroll Layout
If you prefer to read your books using a vertical scrolling layout rather than the default paged layout, select the scroll display option. By enabling this feature, book content is presented in a single long column and you manually scroll by dragging the page up or down.
You can also set the number of columns or enable vertical scrolling through the ePub Reader Settings, especially if you wish to read a book with more than two columns.