Folio

A folio is a term used to describe a specific sheet of paper or a set of pages in a book, manuscript, or document, often numbered or referenced for organization. In historical contexts, it refers to a leaf (a single sheet) of a manuscript or print. In modern usage, it can also denote a large, folded sheet of paper that forms part of a printed work, or a record within a collection, such as a portfolio of work. Overall, a folio is a way of referencing or organizing individual pages or sections within a larger document or collection.