How do you use the pencil?
How do I use the pencil on the ipad 12.9 pro?
iPad Pro 12.9-inch, 2nd Gen, Wi-Fi, Cell
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Tap the links below.
Use Apple Pencil with your iPad - Apple Support
If you need apps for your Pencil, there are plenty of third party apps compatible with the Pencil
Here's a long, but incomplete list of available third party Pencil apps.
https://discussions.apple.com/docs/DOC-13881
Best of Luck to You!