Depth
Depth of ditch measured from edge of the attachment point (road edge at
sub-grade) to the bottom of ditch.
Slope%
If Auto is selected, the ditch slopes will be determined from the ground
type.
Width
Width of a ditch measured at the bottom. A width of 0 will yield a triangular
shaped ditch.
AutoCalc, Include, Exclude
The ditch will be automatically included if the closest road edge is below
the original ground and will be excluded if it is above. If Include is
set the ditch will be always included. Similarly if Exclude is set the
ditch will be always excluded.