Afterwards Msgr Guido Marini, papal master of ceremonies, called out the words "Extra omnes" - "Everybody out" - and the chapel doors were locked to outsiders.
BBC: Rome conclave: Cardinals fail to elect pope in first vote
2.
Then the master of papal liturgical ceremonies gives the order "Extra omnes" "Everyone out" and all but those taking part in the conclave leave the chapel's frescoed walls.
NPR: Conclave To Elect Next Pope Opens Amid Uncertainty