The year property enables the organization of multimedia content based solely on year, whereas the commonly-used "dc:date" UPnP property provides the whole date. For example, use of the year property enables a device to more easily return results for all of the pictures taken in "2006".
The syntax of the property is defined as follows:
PropertyName = "microsoft:year"; UTF-8
PropertyValue = 4DIGIT; unsigned integer, format YYYY
MMPE = "<" PropertyName ">" PropertyValue "</" PropertyName ">";