10
Vertex coordinates (in OCS), multiple entries; one entry for each vertex
DXF: X value; APP: 2D point
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)