How to share your Mac’s screen the quick and easy way in Messages

For nearly 20 years, Apple has offered screen sharing as a basic feature in what was once OS X and is now macOS. This has included a way to share your screen remotely with other people and let them share yours. (At one point, it was easy to reach your Mac while outside your local network and access your screen, but then Apple removed Back to My Mac from macOS.)The feature has changed and migrated over time—it was once part of AOL Instant Messenger!—so you may not know that it’