The next three buttons allow you to take screenshots and Captures the Entire Screen, the second button from the left allows you to Capture a Selected Window, and the dashed rectangle button allows you to Capture Selected Portions of your Mac screen. Starting from the left-hand side, clicking on the cross within the circle will close the Mac sniping tool and return you to your desktop. Apple has also provided a number of useful settings to customize your workflow even further if needed. Here you can carry out a variety of screen capture options such as screenshots, capture a selection of your screen area, as well as record videos of your screen for tutorials and instructional videos. Using the Mac shortcut : Shift, Command, 5 on your MacBook or iMac running the macOS Mojave operating system or later, allows you to access a the Mac Snipping tool control panel (pictured below), that will popup at the bottom of your screen. The main control panel of the snipping tool on Mac can be accessed using the shortcut : Shift, Command, 5, but you can also use : Shift, Command, and 3 to take a quick screenshot of the whole of Mac screen or use the shortcut : Shift, Command, and 4 to capture just a selection of your Mac screen.
Shortcuts for using the snipping tool on Mac