The following group codes apply to helix entities.
| Helix group codes
|
|---|
| Group code
| Description
|
|---|
| | Spline data
|
| 100
| Subclass marker (AcDbHelix)
|
| 90
| Major release number
|
| 91
| Maintenance release number
|
| 10, 20, 30
| Axis base point
|
| 11, 21, 31
| Start point
|
| 12, 22, 32
| Axis vector
|
| 40
| Radius
|
| 41
| Number of turns
|
| 42
| Turn height
|
| 290
| Handedness:
0 = Left
1 = Right
|
| 280
| Constrain type:
0 = Constrain turn height
1 = Constrain turns
2 = Constrain height
|