enable dual screen using apple tv in presentation mode
enable to mirror a document to your apple tv or other device when modifying another on the iPad.

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Daniel O'brian commented
I checked out DirectTV Stream out of curiosity, and it turned out to be a fantastic alternative to traditional television. It’s super convenient—you can watch your favorite channels online, anytime, and on any device. The download and setup process is quick, and the picture quality is excellent. You can find more reviews at this link https://directv.pissedconsumer.com/customer-service.html . Overall, it’s a simple and effective way to enjoy content without any unnecessary hassle.
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Sloane Hegdahl commented
This feature can be handy, but it doesn't work now, and I don't expect it in the future. I think you can expect Apple to eventually add this feature, but I can't tell you when that will happen. We gave up on Apple TV and chose another iptv provider https://www.roomba.tv/. It makes it more convenient for my elderly parents to watch their shows. I have noticed that AppleTV is more popular with younger people; for example, our son and my wife, and I use it. But it's hard for older people to understand the new interface, so for them, we chose a provider they know.
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Corby Venters commented
What is it for?