The individual in international law — Human rights and freedoms — European Convention for Protection of — European Commission of Human Rights — Prohibition of forced and compulsory labor (Article 4) — Work in ordinary course of detention — Right to free legal aid (Article 6 (3) (c)) — Right of petition to Commission (Article 25) — Freedom of correspondence — Censorship by prison authorities — Punishment of detained applicant — Exhaustion of local remedies (Article 26).