 The terms of reference of the inquiry must relate to the peace, order and good government of the Commonwealth, any public purpose or any power of the Commonwealth.The legislation provides that a Royal Commissioner has the power to issue a summons to a person to appear before the Commission at a hearing, to give evidence or to produce documents or other things specified in the summons.The Commission has a discretion whether it will require a person appearing at a hearing to take an oath or give an affirmation to tell the truth.