BOSTON -- Those who regularly visit the St. Francis Chapel in Boston's Prudential Center shopping complex often liken it to a plaza outside an Old World church. As Sunday Mass let out on April 26, it wasn't hard to see why. People of all ages and races poured out of the chapel doors. Some were alone, others were families with children. They stood in the square, went for lunch at nearby restaurants, and chatted with Oblates of the Virgin Mary Father Jeremy Paulin, the chapel's director.