You might not have noticed, but there is slick feature in OS X Mountain Lion hiding in plain sight. With this Mac tip, you will know where to look for the feature in Apple’s latest desktop operating system that allows you to duplicate, move and rename a file right from the titlebar.

If you are running OS X Mountain Lion, here’s how to do it.

Open an image or PDF file in Preview. After the file opens, hover the pointer to the right of file name (image above) in the title bar and small triangle will appear. Click it and you get the option to duplicate, move and rename the file.

This feature is available in a number of apps, most notably Apple’s Preview and iWork (Pages, Keynote, Numbers), that have been updated for OS X Mountain Lion.

Are there more apps that support this feature, specifically third-party apps? Share the wealth with your own Mac tip in the comments below…

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