The individual in international law — Human rights and freedoms — European Convention for Protection of — European Commission of Human Rights — Non-retroactivity of penal legislation (Article 7) — Right to fair administration of justice (Article 6) — Applicability of Convention only to events occurring after entry into force — Application to be made within six months of final decision (Article 26) — Exhaustion of local remedies (Article 26) — Extent to which Commission can take cognizance of errors by domestic courts (Article 19).