Onyx Poke5 BOOX User Manual page 12

4.3 E-ink Center (App Optimization)
It can be called from the Control
Centre or swiping up from the bottom.
This function is mainly used to
optimize the display effect of third-
party apps on E
Ink devices. When it is called on an app interface, the optimized
configuration is applied to that app only. Refresh Modes
You can preset different refresh modes for different apps, or change
later.
HD: Good display effect, suitable for general text reading. Balanced:
Heavier ghosting, suitable for quickly skimming through images and
text.
Fast: Heavy detail loss, suitable for browsing webpages.
Ultrafast: Heavier detail loss, suitable for playing videos.