Methods of defining the slope of the local terrain for the facility, place or target.
| Member | Value | Description | 
|---|---|---|
| eSurfaceNorm | 0x0 | Surface normal: the normal to the terrain is along the local surface normal. This is equivalent to having a slope of zero. | 
| eSlopeAzimuth | 0x1 | Slope/Azimuth: use input values of slope and azimuth to compute normal to the local terrain. | 





