Samsung SM-P600 User Manual page 25

Basics
Using a split screen Multi Window
Use this feature to run applications in a split screen.
Launching applications in a split screen Multi Window
1
Drag your finger from the right edge of the screen towards the middle of the screen.
Alternatively, tap and hold
The Multi Window tray appears at the right side of the screen.
2
Tap and hold an application icon on the Multi Window tray, and then drag it to the screen.
Release the application icon when the screen turns blue.
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Multi Window tray