In a surprisingly elaborate prank, Microsoft brought back MS-DOS Wednesday in the form of a Windows Phone app.
The app, which features both the command line and Microsoft's digital assistant Cortana, had many almost instantly geeking out over the long-gone operating system.
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But Microsoft's April Fools' Day prank has a surprising level of detail, down to the sound effects, "bad command" notifications and a few other Easter eggs. Here's a look at some of our favorite features of Microsoft's epic "prank" app that may actually make you want to take a Windows Phone for a spin.