Abstract: A method and machine for folding, stacking and separating continuous forms in a moving web, the continuous forms web being prefabricated with regard to width, margin line holes and transverse perforations intended for zigzag folding of the web to form it into a stack after it has been provided with print in a printer having a supply of series of preferably personalized forms, wherein each series includes an initial form marked with an address and optionally with a separation mark a first system having feed means for the web which cooperation with the line holes advance the web in controlled register, and means for cutting the web on electronic command from a sensor which reacts to the separation mark or, alternatively, on electronic command from the printer, and a second system comprising a driven feed device for advancing the web and a swinging waddling device, the web passing through the waddling device and being formed during the swinging movements thereof into a zigzag folded stack, and further means for