DXF code Filter type
0 Object Type (String)
Such as ?Line,? ?Circle,? ?Arc,? and so forth.
2 Object Name (String)
The table (given) name of a named object.
8 Layer Name (String)
Such as ?Layer 0.?
60 Object Visibility (Integer)
Use 0 = visible, 1 = invisible.
62 Color Number (Integer)
Numeric index values ranging from 0 to 256.
Zero indicates the BYBLOCK. 256 indicates BYLAYER. A negative value
indicates that the layer is turned off.
67 Model/paper space indicator (Integer)
Use 0 or omitted = model space, 1 = paper space.
А вообще все это есть в документе Autocad 2004 ActiveX and VBA Developer's Guide.pdf