Due to the nature of the graphics, the program only allows placement of the graphic elements on the currently existing points. You can "snap" to a point using the left or central mouse button. The program searches for the closest point within a certain distance from the cursor and, if one exists, moves the cursor there and displays it in red color. At the same time, it displays its number and coordinates in the stage bar. If no point is found in the surroundings, the program announces it with an audio signal.