Yup, it’s been revelaled.  The new “I’m a PC” adverts (after the quick sacking of Mr. Seinfeld), which are to help Microsoft re-gain some of the personal computing market, were created on a Mac.  How to reveal this?   The originating software and platform can be found in downloaded versions of the files using built-in tools on either a Mac running Mac OS X or on a PC running Windows.  In Windows XP, for instance, users can view the tag by right-clicking the downloaded file, selecting Properties from the drop-down menu, then clicking the Summary tab. “Adobe Photoshop CS3 Macintosh” appears beside “Creation Software.” On a Mac, after opening the downloaded file in Preview, users can see the tag by choosing Inspector from the Tools menu, clicking on the middle More Info tab, then clicking on the tab marked TIFF. “Adobe Photoshop CS3 Macintosh” appears beside “Software”.

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