Program description, core, superstructure, components and their attributes. Working environment, work with view and levels. Setting orders, basic setting of new picture. Working grid, drawing of basic elements, element choice, experimental point, fence. Geometric point transformation, point field, point modification. Texts, multiple lines, curves, cells. Working with cell library and multi lines. Dimension apparatus, reference drawings. Special point modifications, hatching and filling with patterns, measuring. Drawing output on plotter. MDL applications aimed at geodesy