title: How to invoke Instant Markup like in Measure app?
body: <p>When you take a screenshot on iOS, it shows you a thumbnail on the bottom left, which hovers above all the other interface elements. Tapping on the thumbnail takes you to an interface that allows you to markup the image, which was introduced in iOS 11. I've heard this called Instant Markup:</p>
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  <p><a href="https://i.stack.imgur.com/2gHijm.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/2gHijm.jpg" alt="enter image description here" /></a></p>
  </blockquote>
  <p>Back in iOS 11, it seemed like there was <a href="https://stackoverflow.com/questions/48350483/ios-11-screenshot-markup">no API for this</a>.</p>
  <p>If you launch the Measure app on iOS 15, you'll see a shutter button. Tapping it invokes the screenshot / Instant Markup API. This leads me to believe that there is an API call somewhere now that allows one to implement the same behavior.</p>
  <p>Is there any public API call to perform a screenshot or send a UIImage to the Instant Markup screen? Or is the Measure app using a private API?</p>