MacOS X was still pretty hardcore about not doing fullscreen, for quite a while. The green button used to make the window 'full size' but that often meant like,

MacOS X was still pretty hardcore about not doing fullscreen, for quite a while. The green button used to make the window 'full size' but that often meant like, as big as a 8x11 document in word would be, not full screen. That pissed off a lot of users who expected MacOS to act like Windows. So Apple changed it. Then along came the iPad and Apple went full hog on "1 task at a time" UIs. So full hog that Microsoft had to backstep and do the same with Windows 8 lol. I don't know what Apple is doing anymore lol.