A printing and writing paper which contains little or no mechanical woodpulp. For statistical purposes any paper which contains less than 10% mechanical pulp is categorised as woodfree. If the proportion is greater than 10% it is categorised as mechanical paper. Woodfree paper may be coated (CWF) or uncoated (UWF). Woodfree paper is sometimes known as "fine paper". In the United States woodfree paper is known as "free sheet"