Samsung Galaxy S III User Manual page 40

Note: Once the two applications are running, the device
displays a split screen view containing both the initial
Multi window app and the second Multi window app.
Each application is still independent of the other.
Panel
Controls
33
Window Controls
Select an application window and touch
the windows. Window controls appear:
App 1
Multi
Window
Controls
App 2
Switch app to compact screen.
Switch locations between Multi Window
applications.
Share items between the application windows. Drag
an item to share from o ne window to another. Some
applications may not support this feature.
Maximize the application.
Close the application.
in the middle of