I search for solutions in this order: Past Code, Unreal Source, Wiki, BUF, groups.yahoo, google, screaming at monitor. – RegularX

From Unreal Wiki, The Unreal Engine Documentation Site

Base class for the decorations that came with Unreal Tournament. Doesn't have content of its own; its only purpose is to bundle those decorations neatly in a class subtree of their own in the actor browser and, allegedly, to help performance when loading those classes.