To work in a bigger window without going full screen, maximise (or zoom) the window.
To stop using the app full screen, move the pointer to the green button again, then choose Exit Full Screen from the menu that appears or click the button. Move between other apps in full screen: Swipe left or right on the trackpad with three or four fingers, depending on how you set your trackpad preferences. Show or hide the Dock: Move the pointer to or away from the Dock’s location. Show or hide the menu bar: Move the pointer to or away from the top of the screen.
On your Mac, move the pointer to the green button in the top-left corner of the window, then choose Enter Full Screen from the menu that appears or click the button.
