Does anyone know how to determine if a given Open XML file is based on the transitional or strict format?
When I open a file in Word 2016 which was created in Word 2007 I get the “Compatibility Mode” notification. How can I figure this out by using Open XML SDK? I tried to compare file versions from 2007 (saved again in 2016, but still in compatibility format) and 2016 but only found slight differences in the settings and styles part. There is the app property AppVersion but it only shows which Ofice version was last used to save the file.
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