The program uses A4 format as default. You can edit the page format in the following dialog box.
Enter the values to be adopted for "Page height" and "Page width". The program automatically draws thin borders around the page, which are required when using paper rolls on a plotter. "Page margins" defines the position of a thickly drawn frame as a distance to these borders.
In order to achieve 1:1 output on an A4 printer the borders must be switched off (see menu item "Graphics preferences/With borders") and the page height and page margins be adapted to the printable area of the printer.