Well you ought to be able to distinguish “Zoom” and “Full Screen” because the icon within the window control will be a plus symbol if it’s Zoom and two arrows p

Well you ought to be able to distinguish “Zoom” and “Full Screen” because the icon within the window control will be a plus symbol if it’s Zoom and two arrows pointing at 10 o’clock and 4 o’clock if it’s full screen. By default it’s full screen now, and you have to hold option to bring the Zoom control up (which since the advent of full screen is inconsistent even in Apple’s own apps). Double clicking the title bar (in the decreasing amount of empty space in modern Mac OS X chrome) will also net you Zoom functionality without holding option.