The set of edge-symbol direction modes.
Defined in namespace "adsk::drawing" and the header file is <Drawing\DrawingTypeDefs.h>
| Name | Value | Description |
| HorizontalDirection | 1 | Values apply in the horizontal direction. |
| NoDefinedDirection | 3 | No symbol values are displayed. |
| UndefinedDirection | 2 | Direction is undefined; upper and lower limits may differ. |
| VerticalDirection | 0 | Values apply in the vertical direction. |