Which Articles of the Constitution of India deal with the regulation of Subordinate Courts?

Chapter VI of Part VI of the Constitution of India is specifically titled 'Subordinate Courts' and consists of Articles 233 to 237: Article 233 (Appointment of district judges), Article 233A (Validation of appointments of, and judgments, etc., delivered by, certain district judges), Article 234 (Recruitment of persons other than district judges to the judicial service), Article 235 (Control over subordinate courts vested in the High Court), Article 236 (Interpretation of 'district judge' and 'judicial service'), and Article 237 (Application of the provisions of this Chapter to certain class or classes of magistrates).