A "Folio" is a term used to describe a large sheet of paper that is folded once to create two leaves or four pages. In publishing, it often refers to a book or manuscript that is made up of such sheets. Folios are commonly used in the production of art books, catalogs, and other printed materials where larger images or layouts are beneficial. In the context of finance, a "folio" can also refer to a collection of investments held by an individual or institution. This can include stocks, bonds, and other assets, allowing for better organization and management of one's financial portfolio. A well-maintained folio helps investors track performance and make informed decisions about their investments.