Sony Xperia 1 III Help Manual page 41

Swipe left or right to select the desired apps, and then tap [Done].
3
Split-screen overview
1.
Application 1
2.
Split-screen border – Drag to resize windows
3.
Multi-window switch icon – Tap
appears when you drag the split-screen border.
4.
Application 2
5.
Overview button – Select a recently used application for the lower window
6.
Home button – Go back to the Home screen
7.
Back button – Go back to the previous screen within an application or close the application
(Multi-window switch icon) to select applications.
41
(Multi-window switch icon)