HI Peter, thanks for the replies. I think I have a grasp on the cogo editor functions now. I was confused as to why there could only be a non-zero closure value when the pob was chosen to coincide with the point of closure, but I remembered that the traverse is based on the polyline (at least in this case). So that's where the actual closure error data existed.
As for the output reports, the cogo editor's is pretty, but doesn't contain the depth that the mapcheck's does (.lso, lsi, .trv). But the mapcheck report data is simple text data, not the nice C3D report that you can get for just about everything else in C3D, including that for the cogo editor.
I think I"m good now. If I have further issues, I'll get back to this thread.
Civil 3D 2012 Windows 7 Enterprise SP1 Dell Precision T3400 (Q9550 @ 2.83 GHz) 4GB RAM Nvidia Quadro FX 3700