DXF Group Codes
ENTITIES Section
LINE

The following group codes apply to line entities.

Line group codes
Group codes Description

100

Subclass marker (AcDbLine)

39

Thickness (optional; default = 0)

10

Start point (in WCS). DXF: X value; APP: 3D point

20, 30

DXF: Y and Z values of start point (in WCS)

11

End point (in WCS). DXF: X value; APP: 3D point

21, 31

DXF: Y and Z values of end point (in WCS)

210

Extrusion direction. (optional; default = 0, 0, 1).
DXF: X value; APP: 3D vector

220, 230

DXF: Y and Z values of extrusion direction