1. If you want to view a PDF file in pure text mode, tap "Tool" at the top bar.
2. Tap the "Text Reflow" icon under “Viewer” at the menu and you will see the PDF file displayed in text form.
3. At the bottom menu of Text Reflow mode, you will see the options of Settings/Auto Scroll/Search.
4. Tap “Settings” to change reading mode (Fonts, Font Size, Speed of Auto Scroll and activate Auto Flip).