Paper marbling is a metho of aqueous surface design, which can produce patterns similar to marble or other stone, hence the name. The patterns are the result of color floated on either plain water or a viscous solution known as size, and then carefully transferred to a sheet of paper (or other surfaces such as fabric). This decorative material has been used to cover a variety of surfaces for several centuries. It is often employed as a writing surface for calligraphy, and especially book covers and endpapers in bookbinding and stationery. Part of its appeal is that each print is a unique monoprint.