Screenshot using Mac 

In Mac,  are different moods of the screenshot, some will store image in clipboard or save on desktop, you may screenshot entire or specific, the guideline has been re-created from colorlib.com post regards this issue. 

Capture a selected portion of the screen in the clipboard 



                         Press Shift + Command + Control + 4

Capture a selected portion of the screen in desktop 

Press Shift + Command + 4

            Capture a selected portion of the screen 

                          Press  Command + Control + Shift + 3 


Capture entire screen area and save it to a file on your desktop 

                                  Press  Command + Shift + 3