Apple OS X 10.5 “Leopard” officially debuts, from engadget.

Apple OS X 10.5 Leopard (spring ‘07 release), has a special feature called Time Machine.

Time Machine can automatically backs up every version of your files to a hard drive or server, to browse through older versions of folders.

In other words, users can travel through time by scrolling through different windows that represent days, looking for the file they need.

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