Slide Aside allows you to quickly switch between three open apps (or tasks) for convenient multi-tasking.
From the Home screen, tap Apps
>
Settings 
> Slide Aside.Tap the switch
to turn the feature on/off.
TIP!
The Slide Aside feature does not recognize fewer fingers, additional fingers, or your palm.
TIP!
You must be in an application, not on the Home screen, to use Slide Aside.