More Great Features Of macOS Catalina
App Tiling.
App Tiling is a new way of using your apps in split-screen mode. Click and hold the green gumdrop for a menu that lets you go full screen, or tile a screenshot on the left- or right-hand side of the desktop. Choose a tiling option.
Now click on another app that can be viewed in split-screen. It automatically tiles itself to the other side of the screen, giving you a split-screen perspective without having to drag app windows on to the desktop bar.
Continuity markup and sketching
You can draw on
