Open the 'Book Preferences' dialog
'Book Preferences' dialog
Click the 'Book Mode Preferences...' button while displaying a book in the book mode.


Book mode settings
Common Settings
- Font: Font family for body text.
- Paper Color: Background color for a book
View Options
- Page Flip Animation: Enable or disable pageflip effect
(Disabling pageflip effect improves display performance) - Show Ruby (Aozora Bunko): Show or hide ruby texts for Aozora Bunko books
Key Assignments
- Horizontal Writing: Assignment for arrow keys for horizontally displayed books
- Vertical Writing: Assignment for arrow keys for vertically displayed books
Document Settings
- Text Direction: Sets either horizontal writing or vertical writing