It is a plant growing along the Nile in Egypt during Biblical times. It was used as writing material. Papyrus scrolls were made by cutting and pressing sections of the papyri plant together at right angles. The typical maximum length of a scroll was about 35 feet. The scribe when using papyrus would often use the natural horizontal fibers of the papyrus plant as guidelines. He would take a blunt instrument and score horizontal lines and then score two or more vertical lines as margins for the edge of the sheet or to define columns on it. We get the word "paper" from this word. Many of the Biblical manuscripts were on papyrus.