In the Autodesk AutoCAD DWG/DXF reader you can choose to "Read Drawing System Variables" and a null feature of the type autocad_info is created. But there is no documentation of the attributes connected to the autocad_info feature.
As an AutoCAD user I can interpret the attributes but if you don't have AutoCAD it is pretty hard to know what is what. It would be better if there was a help section in the Autodesk AutoCAD DWG/DXF Reader/Writers documentation about the autocad_info feature and it's attributes. The current attributes that needs to be explained are the following: autocad_angbase, autocad_angdir, autocad_attmode,autocad_aunits, autocad_auprec, autocad_fillmode, autocad_insunits, autocad_latitude, autocad_longitude, autocad_lunits, autocad_luprec, autocad_projectname, autocad_proxygraphics, autocad_version
