“Users might wonder what took Apple so long to bring such an obvious feature from its web browser to its desktop experience,” Dilger reports. “Rather than being a simple feature addition, the new Tabs are designed to be particularly useful in the new Finder because they support drag and drop of documents between tabs, including a tab of the AirDrop window for wireless sharing. This also makes the new Finder fully-functional in Full Screen mode, where users can actually work with multiple window views. Currently, the Finder is among the few apps bundled in OS X that doesn’t support Full Screen use.”
Dilger reports, “While seemingly simple, the development of Multiple Displays and support for a Full Screen Finder required a lot of background changes to how OS X works. “
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