Onyx Boox Poke5P User Manual page 18

Scrolling Button Setting
You can go to the Scrolling
Button Setting page from App
Management (Tap the Menu
bar on the upper right corner on
the Apps homepage) or
Navigation Ball settings.
When enabled in third-party apps, the Scrolling Buttons
can be used to turn pages. Based on the actual situation of
the page, you can set the required starting and ending
positions to avoid inconsistent or partially duplicated
content after turning a page.
It is recommended to set the starting and ending positions
between 15% and 90% of the screen. A range that is too
large may make it difficult to turn pages effectively while a
range that is too small may result in excessive repeated
content.