Cardinals begin process of eyeing fellow "papabiles"

On April 18, the princes of the church, as the cardinals are called, will be locked together in Michelangelo's Sistine Chapel until one of them emerges as the next pope.

Until that secret meeting - the conclave - the cardinals will observe the formal mourning period for John Paul II.

But during that time they also will be talking to each other over capuccinos, over dinners, in Vatican hallways and gardens and in their daily business meetings.

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