| AttachmentFrom | Internal name of the key that dictates which attachment to use as parent for start position. |
| AttachmentTo | Internal name of the key that dictates which attachment to use as parent for end position. |
| BoneFrom | Internal name of the key that dictates which bone to use as parent for start position. |
| BoneTo | Internal name of the key that dictates which bone to use as parent for end position. |
| Color | A string formatted color for this helper. Format is "255 255 255" |
| Enabled | Internal name of the key that controls whether this helper is visible or not. |
| OriginFrom | Internal name of the key to read line start position from. |
| OriginTo | Internal name of the key to read line end position from. |
| Width | The width of the line helper |