SECTION ONE
CHAPTER 2. HUMAN AND CIVIL RIGHTS AND FREEDOMS
Article 51
1. Nobody shall be obliged to testify against him self, his (her) spouse or close relatives, the range of whom shall be determined by federal law.
2. Federal law may establish other cases where the obligation to give evidence may be lifted.
Fair trial standards
Rights during investigation - self incrimination
Rights during trial - burden of proof
EDIT.