THE first President of Macau's Supreme Court was sworn in at the Governor's Palace yesterday. The court, which will operate soon, will hear appeal cases, which Lisbon handles at present. The new judge, Dr Amaro Farinha Ribeiras, arrived from Portugal last week. In the same ceremony, Macau's first local Chief Public Prosecutor, Dr Rodrigo Leal de Carvalho, also took his oath. The two appointments give formal autonomy to Macau's judicial system, which depended on Lisbon for appeal proceedings and other higher court decisions. In future, only ''very exceptional'' appeal cases will be heard in Lisbon. Dr Almeidas said the Macau judicial system would not be changed after 1999, when Macau will revert to Chinese sovereignty.