OCAD is a software program for drawing maps of all types (e.g. topographic maps, city maps, hiking and biking maps, Internet maps). Specific cartographic drawing and editing tools have been implemented, such as an ingenious map symbol editor, automatic disabling of street sidelines in junctions, Bezier curve, line tracing, Snapping, influencing the position of the sections of dashed lines, Rubbersheeting to rectify distortions, georeferencing, deriving contour lines and profiles from Digital Elevation Models etc