Autocad DWG import guidelines

Rhino Rhino for Windows
1

I would like a guide to what versions of DWG files import into Rhino4 and which entities do not import.

My own experiments are a bit scattered. For instance it seems that only DWG version 2004 and prior come import into Rhino4.

2

I think the V4 Help topic for “DWG file exchange” has those details.