1 Find song dupes
The Music app can find either duplicate songs or exact duplicates. Select the song and use File > Library > Show Duplicate Items, holding the Opt key for only exact duplicates.
2 Share stacks of photos
You can share several photos at once in a collection, which tiles them together. Add more to turn the collection into a whole stack.
3 Shared Reminders notifications
Share Reminders tasks and you’ll be sent a notification when those tasks are added to or completed in your shared lists.
4 Manage Wi–Fi passwords
Copy a Wi–Fi password in System Settings > Wi–Fi > Advanced, then click the “…” button for that network, and select Copy Password.
5 Check up on your AppleCare cover
You can find the expiry date for any AppleCare cover you have on your Mac in System Settings > General >
