The print out size is controlled by the "Scale" setting found in the Map -> Current Map View dialog. This scale is correct for the print out. For example, if it is set to 1 km/cm then a 1 cm distance on the print out will represent 1km. The computer screen display is not necessarily the view that will print. This is because the view you see on the screen is based on what display settings you have. For example, a particular Scale setting inside the EDX program will show a larger map area on a 1280 by 960 screen then on a 1024 by 768 screen. The only way to determine what the print out will look like before you print is to use Print Preview. The Print Preview will show you what will be printed to the size of paper that you have set for your printer.