diff -r 2c43106bef85 -r 3d2e3cfb2a6c gui/graph_displayer_canvas.h
--- a/gui/graph_displayer_canvas.h	Thu May 26 16:32:26 2005 +0000
+++ b/gui/graph_displayer_canvas.h	Fri May 27 10:34:20 2005 +0000
@@ -8,6 +8,7 @@
 #include <libgnomecanvasmm.h>
 #include <libgnomecanvasmm/polygon.h>
 
+///This class is the canvas, on which the graph can be drawn.
 class GraphDisplayerCanvas : public Gnome::Canvas::CanvasAA
 {
   typedef Gnome::Canvas::CanvasAA Parent;
@@ -16,25 +17,40 @@
   GraphDisplayerCanvas(Graph &, CoordinatesMap &, MapStorage &);
   virtual ~GraphDisplayerCanvas();
 
+  ///Changes the linewidth attribute according to the given map.
+  ///\param mapname is the name of the map which contains the new values
   int changeLineWidth (std::string mapname);
+
+  ///Changes the linecolor attribute according to the given map.
+  ///\param mapname is the name of the map which contains the new values
   int changeColor (std::string mapname);
+
+  ///Changes the text of line attribute according to the given map.
+  ///\param mapname is the name of the map which contains the new values
   int changeText (std::string mapname);
+
+  ///Changes the dot-pro-pixel to be able to show the whole graph.
   int rezoom();
 
 protected:
 
+  //maximizing, minimizing, restoring window, etc. 
   virtual bool on_expose_event(GdkEventExpose *);
 
 private:
 
-  ///Event handler function that handles dragging nodes of displayed_graph
+  ///This function is responsible for the correct
+  ///reaction of any action happened in the territory
+  ///of the canvas
   bool event_handler(GdkEvent* e, Node n);
 
   ///The graph, on which we work
   Graph g;
-  ///Map of nodes of planefigure
+
+  ///Map of nodes of graph
   Graph::NodeMap<Gnome::Canvas::Ellipse *> nodesmap;
-  ///Map of edges of planefigure
+
+  ///Map of edges of graph
   Graph::EdgeMap<Gnome::Canvas::Line *> edgesmap;
 
   ///Map of texts to write on edges