The following group codes apply to lwpolyline entities.
Lwpolyline group codes
Group code
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
91
Vertex identifier
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)