All paper produced by paper machines as the Fourdrinier Machine are wove paper, i.e. the wire mesh that transports the web leaves a pattern that has the same density along the paper grain and across the grain. Textured finishes, watermarks and wire patterns imitating hand-made laid paper can be created by the use of appropriate rollers in the later stages of the machine.
What type of paper is produced on a machine like the Fourdrinier? What is used to apply watermarks and other patterns? What is in common with the lentgh along and across the grain of paper produced by a machine such as the Fourdrinier? What leaves a pattern on the paper that has a consistent density width and lengthwise?