1. Go to the menu page by tapping on the more options icon.
2. Tap the "Text Reflow" icon under “Viewer” and you can view the PDF file displayed in text form.
3. At the bottom menu, you will see the options of Settings/Auto Scroll/Next Page/Previous Page/Search.
4. Tap Settings, you can adjust fonts, font size, display tone, the speed of Auto Scroll and activate “Auto Flip.