To use it, select a document or image in Finder on your Mac and hit the Spacebar. Then, click the Markup icon and hit the iPhone or iPad icon to seamlessly switch to your iPhone or iPad. Annotate or ...

But under the hood, it’s far more powerful than that. If you're only using it to brainstorm ideas or edit emails, you're missing out on some seriously impressive hacks that can save you time, simplify ...