Socialist law is the official name of the legal system used in Communist states. It is based on the civil law system, with major modifications and additions from Marxist-Leninist ideology. While civil law systems have traditionally put great pains in defining the notion of private property, how it may be acquired, transferred, or lost, Socialist law systems provide for most property to be owned by the state or by agricultural co-operatives, and having special courts and laws for state enterprises.