AutoCAD Civil 3D :: Description Key Code For All Points Not Matching Any Other Codes?

We are using Civil 3d 2010.

In a description key code file, I would assume that a description key code of simply * would capture all points, but it seems this code gets ignored. How do we create a key code that captures all points?

For example, if I want to take advantage of the hierarchical processing of DKC files to assign layers, point styles, label styles, etc, I can theoretically create a 'design' DKC file that makes all points, regardless of their desciptions, to be sized relatively, and then move that DKC file to the top of the DKC file list.

I know this can be accomplished through the "_all points" point group, but I want to be able to control point layers as well, and as far as I know, neither point groups, point styles, nor label styles affect the insertion layer of a point, but DKC files do.