http://agathe.gr/democracy/marble_stele.html
Law Against Tyranny In 338 B.C. Philip II of Macedon and his son Alexander defeated the Athenians and other Greek states in a battle at Chaironeia in central Greece. In the following year (337/6 B.C.) ... The law was inscribed on two stelai (stone markers) to be set up at the entrances of the Bouleuterion (senate house) and the ekklesia (assembly). ... The secretary of the Council shall inscribe this law on two stelai of stone and set one of them by the entrance into the Areopagos, that entrance, namely, near where one goes into the Bouleuterion, and the other in the Ekklesia. For the inscribing of the stelai the treasurer of the Demos shall give 20 drachmas from the moneys expendable by the Demos according to decrees.