Input (grade 13): Of the thirty-nine elements of section 51, a few have become critical in determining the scope of Commonwealth government action, including the Trade and Commerce Power, the Corporations Power and the External Affairs Power.
Output (grade 11): Of the thirty-nine parts of section 51, a few have become very important in deciding how much power the Commonwealth government has in law. These include the Trade and Commerce Power, the Corporations Power and the External Affairs Power.