Set OS 66 = 0 for only elevation changes to be displayed. North, South, East, and West coordinate changes are not output. This is the default setting.
Set OS 66 = 1 for all supplementary coordinates and elevation to be output along witness lines instead of leader messages.
Set OS 66 = 221 to output supplementary elevations and coordinates at bends, elbows, and branch intersections in all cases were the elevation level North, South, East, or West coordinates have changed.
Set OS 66 = 330 or set OS 66 = 331 for a full set of all three coordinates output.
Set OS 66 Pos 4 = Blank to omit split point coordinates.
Set OS 66 Pos 4 = 1 to output split point coordinates.
