For the first time in three weeks, a huge crowd was treated to the sight of a pope giving a Sunday blessing from high above St Peter's Square in the Vatican.
ITV News' Harry Smith reports:
Pope Francis has tweeted for the first time since he was elected last Wednesday:
Dear friends, I thank you from my heart and I ask you to continue to pray for me. Pope Francis.
The tweet was retweeted some 7,000 times in its first half hour of existence.
The same @Pontifex account was used to declare that a new pope had been elected with the words "HABEMUS PAPAM FRANCISCUM," although this has now been deleted.
Pope Benedict XVI, his predecessor, used the same account for his first tweet: "Dear friends, I am pleased to get in touch with you through Twitter. Thank you for your generous response. I bless all of you from my heart."
Pope Francis is making his first speech from the balcony overlooking St Peter's Square in the Vatican.
The pontiff spoke for a short time before giving The Angelus prayer to the assembled crowds.
He repeated his central message that "the Lord never tires of forgiving" several times.
He got a laugh from the crowd when he joked that he wasn't trying to promote a book written by a cardinal that he made reference to in his speech.
Pope Francis made an unexpected appearance at the Vatican's gates today, prompting loud cheers of "Francesco" from the crowd. He walked to an open gate near the edge of Vatican City, ahead of a Mass he was celebrating in the parish church for Vatican residents.
The Vatican says it "clearly and firmly" denies accusations that Pope Francis had any knowledge of the activities of Argentina's Junta.
Many in the Roman Catholic Church see Pope Francis as a bringer of change
Social Affairs Editor Penny Marshall has been finding out if it will be the kind of change British Roman Catholics wish for:
Celebrations were taking place in Pope Francis' home city of Buenos Aires today where he is admired for his work with the poor in the city's slums - often travelling on the bus, while a cardinal, to visit soup kitchens and talk to those who lived there.
International Editor Bill Neely reports from Argentina: