BLOCK_RECORD

100

Subclass marker (AcDbBlockTableRecord)

2

Block name

340

Hard-pointer ID/handle to associated LAYOUT object

70

Block insertion units.

280

Block explodability

281

Block scalability

310

DXF: Binary data for bitmap preview (optional)

1001

Xdata application name “ACAD” (optional)

1000

Xdata string data “DesignCenter Data” (optional)

1002

Begin xdata “{“ (optional)

1070

Autodesk Design Center version number

1070

Insert units:

0 = Unitless; 1 = Inches; 2 = Feet; 3 = Miles; 4 = Millimeters;

5 = Centimeters; 6 = Meters; 7 = Kilometers; 8 = Microinches;

9 = Mils; 10 = Yards; 11 = Angstroms; 12 = Nanometers;

13 = Microns; 14 = Decimeters; 15 = Decameters;

16 = Hectometers; 17 = Gigameters; 18 = Astronomical units;

19 = Light years; 20 = Parsecs

1002

End xdata “}“