Photo: Cardinals Enter The Sistine Chapel To Begin The Conclave To Elect New Pope

The heavy wooden door to the Sistine Chapel has been closed and locked, signaling the start of the conclave to elect a new pope to succeed Benedict XVI following his shock resignation. Monsignor Guido Marini, master of liturgical ceremonies, closed the double doors after shouting 'Extra omnes,' Latin for 'all out,' telling everyone but those taking part in the conclave to leave the frescoed hall. He then locked it.