Useful art, or useful arts or technics, is concerned with the skills and methods of practical subjects such as manufacture and craftsmanship. The phrase has now gone out of fashion, but it was used during the Victorian era and earlier as an antonym to the performing art and the fine art. The term "useful Arts" is used in the United States Constitution, Article One, Section 8, Clause 8 which is the basis of United States patent and copyright law: