The Vatican said Saturday it will publish a new document for Chinese Catholics as a follow-up to a 2007 letter that Pope Benedict XVI addressed to that community. The document, written in a question-and-answer format like the Catechism of the Catholic Church, will summarize and elaborate on the contents of the pope's letter, the Vatican said in a statement. China did not directly respond to the letter, but officials in the state-sanctioned church have called it a positive step.