Codex

A codex (Latin caudex for "trunk of a tree" or block of wood, book; plural codices) is a book made up of a number of sheets of paper, vellum, or similar, with hand-written content, usually stacked and bound by fixing one edge and with covers thicker than the sheets, but sometimes continuous and folded concertina-style. The alternative to paged codex format for a long document is the continuous scroll. Examples of folded codices are the Maya codices. Sometimes the term is used for a book-style format, including modern printed books but excluding folded books.