Below are the commands for this ribbon panel. Any commands specific to Civil 3D or AutoCAD/BricsCAD will be noted with the command.
These parameters can be used in the field on the end of the code e.g. 40801.F or 40801.L which will then be used during the reduction of you raw data to have your drafting already completed from the field. If you don't do this in the field and you want to add them once you have reduced your data into the drawing, there are tool in there that can assist you if you think that is easier.
Starts a 3 point arc at that point and passes through the next 2 points on the string. As with the .A parameter subsequent points will be joined by arcs each co-tangential with the previous arc until a .L is issued reverting the string to tangents. On a string that that continues to arc you put the .F on the first one and then every second one after that e.g. 1, 3, 5, 7, 9 etc This will give you better arcing because every time you put a .F on it will look at the immediate next 3 pts (this includes where the .F if as 1) e.g. 40805.F/BCK05.F
Draw a rectangle using 3 surveyed points. It will do a height and distance check down one side and then do a height and distance check down the other and then mirror that linework on the other side to finish off the linework. Just say you get a pit and you can't get the last 4th corner, anywhere on that string you can add a .R to the code e.g. 30801.R/DP01.R
An arc tangential to the previous tangent will start at that point and passing through the next point on the string. Subsequent points will be joined by arcs, each co-tangential with the previous arc, until .L is issued reverting the string to tangents.