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There are so many uses. For me, I run a blog for a sports team and I can have Twitter open following social media for the game and the notes app open writing about what's happening for a post I'm making. Or I can have Wordpress open in Safari (or the wordpress app when it's supported) and the stats open in the NHL app.

It's such a great feature and I'm super pumped for 3rd party devs to support it.
 
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