Onyx Poke5 BOOX User Manual page 17

Others
Stay active in the background This is
for the apps that are continuously
running in the background, such as
Alarms, Notifications, Download. You
can stop the apps running.
Force follow system direction
Some APPs lock the direction. When the system rotates, if the APP
cannot follow the rotation, forced rotation can be used;
Forced rotation may cause some interfaces to fail to display normally.
For such APP, it is recommended to turn off forced rotation and use
the original direction;