Module for working with markers.
Transferring attributes on geographical principle. Generating markers of objects. Checking for objects without markers or with more than one marker.

Snap.
Allows editing of graphical objects on preliminary input settings. Functions for checking for OVERLAP and GAPS. Adds new objects using rules for snap.
Module for topological operations on graphical objects.
Extracting data from polygons. Clearing lines. Forming of contours. Checking for errors. Object unifying. Object collapsing.

Module for working with *.zem, *.cad and *.ferma files.
Reading data from *.zem, *.cad and *.ferma files. Transformation of graphical objects *.shp and data from tables in *.dbf format. Transformation of coordinates.