Definition: The term "folio" refers to a specific type of paper, specifically the Folio of Papyrus (also known as the Papyrus of Hattie), which was used by ancient Egyptians for writing and copying documents. This parchment was an exact copy of the Egyptian hieroglyphic script, thus allowing for easy interpretation of the words written on it. The Folio is still considered one of the most important types of manuscript in history. The definition of "folio" can be broadly defined as a collection of papyrus sheets that are used for writing and copying documents. It's an essential part of the Egyptian hieroglyphic script, which served as the basis for much later writing systems. The Papyrus of Hattie is one of several examples of this type of writing system. The Folio was also used in other ancient cultures such as Mesopotamia, China, and Japan, and its importance has been reflected in various types of manuscripts throughout history.