One of the most publicised feature of iBooks app has been the page flip. With iBooks version 3, Apple added a new Scroll theme that allows you to scroll vertically through the text. Scroll theme is a welcomed addition for reader who find it more convenient to scroll than to flip book pages.
To select the Scroll theme, tap the font icon on the menu bar. Then tap the button “Themes”. The drop down box will expand to show the “Scroll” option. Tap on it to enable Scroll theme.
Scroll theme is available when you’re viewing books purchased from iBooks store or imported books in ePub format. PDF files are still limited to using page flip.