History: This was part of a batch of embarrassing internal junk, that lawyers forced to document as part of the DoJ consent decree in 2001. Basically, various API surface in Windows (mostly helper functions in Shell32.dll) that other products (mostly Office) were calling. It was never intended to see light of day.. obviously, it was the result of some dev who rotated from one org to another, and copy-pasted some helper function code from one product repo to another. I don't recall any of those lawyer-documented functions doing anything meaningful (that couldn't be replicated in user-mode code using existing Win32 APIs). But, try explaining that to DoJ lawyers..