MDT is an application that is installed as an add-on to AutoCAD, BricsCAD, GstarCAD, or ZWCAD. It allows you to model the terrain using any total station or points measured by a GNSS receiver, import files, or connect to online services. It provides options for creating contours, drawing profiles and cross-sections, calculating volumes, visualizing terrain in 3D, tilting maps, importing and exporting GIS files, etc. It provides a powerful tool for easy learning and has a modular structure. It also has functions for working with plots and several additional utilities.