Not only the DTM creation with a reliable delaunay triangulation algorithm but this program it's prepared for civil engineers and surveyors because it has the possibility to include break-lines and to draw the contour lines without smoothing or with a reliable smoothing algorithm and too, you can add labels on the contour lines.The program works in Autocad 2007/2008/2009, Autocad 2010 and BricsCAD v10.