Chapter 6 -- ENTITIES Section
LWPOLYLINE

The following group codes apply to lwpolyline entities. In addition to the group codes described here, see "Common Group Codes for Entities." For information about abbreviations and formatting used in this table, see "Formatting Conventions in This Reference."

Lwpolyline group codes
Group codes Description

100

Subclass marker (AcDbPolyline)

90

Number of vertices

70

Polyline flag (bit-coded); default is 0:
1 = Closed; 128 = Plinegen

43

Constant width (optional; default = 0). Not used if variable width (codes 40 and/or 41) is set

38

Elevation (optional; default = 0)

39

Thickness (optional; default = 0)

10

Vertex coordinates (in OCS), multiple entries; one entry for each vertex
DXF: X value; APP: 2D point

20

DXF: Y value of vertex coordinates (in OCS), multiple entries; one entry for each vertex

40

Starting width (multiple entries; one entry for each vertex) (optional; default = 0; multiple entries). Not used if constant width (code 43) is set

41

End width (multiple entries; one entry for each vertex) (optional; default = 0; multiple entries). Not used if constant width (code 43) is set

42

Bulge (multiple entries; one entry for each vertex) (optional; default = 0)

210

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

220, 230

DXF: Y and Z values of extrusion direction (optional)