If changed the L-Line will be re-stationed to start at the entered point. Clicking on the "+" sign allows you to set the start for Cummulative Slope Distance stationing.
SectSection Extension
Extend Ground (check box and button)
Set this check box to extend the draped ground cross section beyond the edge of the original ground Terrain surface. Press the accociated button for more options in Section Extrapolate Ground Options.
This has no effect on P-Line designs (designs without an associated original ground Terrain surface).
This operation will fail on cross sections where the alignment centerline is not on the Terrain surface.
Disable fast draping (check box )
If un-checked, processing cross sections is faster, however, cross section surfaces (topo, sub-surface1 etc.) must extend across centerline. Disabling fast drape should be used only if the surfaces don't cross centerline (e.g. as is often the case with as-built surveys).
P-Line
Between (radio button)
If this is turned on, all calculations (i.e. Ground Layers, Side shots, and Ground types) and areas of influence will be half way between stations.
Ahead (radio button)
If this is turned on, all calculations (i.e. Ground Layers, Side shots, and Ground types) and areas of influence will be from one station to the next station.
Reference
Terrains (button)
This button will open the Reference Terrains dialog, allowing display of Terrain files in profile or section, or for template control.
Features (button)
This button will open the Reference Features dialog, allowing display of projected/intersected features or for template control.
button)