
Recognizing the utility of Markup annotation tools, Apple has extended their availability in recent versions of iOS, but it's worth bearing in mind that you can access a similar and equally useful annotation toolset within several native Mac applications.
In macOS, accessing an application's Markup toolbar lets you draw on and annotate images or PDF documents within the app using arrows, shapes, and text. You can also use it to quickly sign a document with your digital signature.

We've highlighted which native apps support Markup in this article. But before you can access the toolset in desktop apps, you'll need to check that the relevant extension is enabled on your Mac. Keep reading to learn how it's done.
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Article Link: How to Enable Markup Annotation Tools in macOS