The main provisions pertaining to discrimination have been laid down in the Constitution, the Non-Discrimination Act and the Penal Code. As a general clause, a prohibition on discrimination is also included in many statutory acts. Section 6 of the Constitution provides for equality and prohibits discrimination. The main thrust of this constitutional guarantee of non-discrimination is to ensure formal equality, i.e. the principle that people in similar circumstances are to be treated similarly, but it also aims to reach full, substantive equality in practice. The constitutional prohibition of discrimination may be directly invoked in courts, and regular laws are to be interpreted in accordance to it. So far the constitutional anti-discrimination provision has been applied mainly in situations involving the use of public power, but it may in some instances have a bearing on relationships between private parties as well.