Sony Playstation PS4 Quick Start Manual page 14

View shared gameplay
Use (Live from PlayStation) to view broadcasts, video clips, or
screenshots shared by other players.
Play a game together
Use (Share Play) to share the game screen with another player
and play the same game together.
*2
For details on the share feature, refer to the User's Guide.
manuals.playstation.net/gb/02.html
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