MDDR in user agent string

Question

What do MDDR means in a user agent string?

Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; MDDR; InfoPath.1; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; OfficeLiveConnector.1.4; OfficeLivePatch.1.3)

Answer 1

Not too sure, but some links that might be of help:

http://sillydog.org/forum/sdt_15762.php : User forum that displays user agent strings. There's a member of the Bing outreach team (bingnate) who has that in his user agent strings. You might be able to ask him.

http://user-agent-string.info User agent analyzer.