This no longer applies if you use Mac OS X. Most settings dialogs have no "Apply" button and applications no longer have "Save" buttons. The user expects that t

This no longer applies if you use Mac OS X. Most settings dialogs have no "Apply" button and applications no longer have "Save" buttons. The user expects that things will be committed immediately as you do them. In fact, there is no "commit". You just do things. And that's the way it should be. After getting used to that, it's pretty annoying to use Windows, which keeps asking you whether you want to cancel or apply things in every possible situation. Sometimes it even defaults to reverting your changes if you just close the dialog box (like when changing the desktop background image in Win8, for example).