The mesh can be smoothed and adjusted to a control mesh or control points. Break lines can be inserted to refine the terrain configuration. Terrain mesh editing commands to insert, delete, move, adjust elevation, flatten vertices, and invert, delete, or cut triangles.3D entities contained in regular or nested blocks can also be exported. Import and export 3D models from DAE, 3DS, FBX, and OBJ files to AutoCAD, and export them and other 3D entities such as 3D solids, regions, meshes or polymeshes to Google Earth.