macos sierra feature
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dark mode is one of the most notable features on the mac. when dark mode is activated, the interface on the mac will change, turning dark. and just like on windows, when activating dark mode on the mac, it also saves battery life and also prevents users' eyes (especially at night).
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directory ~ / library / on macos sierra contains preference files, cache and application data. however, by default, the user library folder is hidden on macos sierra. in some cases you may have to display and access this folder.