His resignation, which took effect Thursday, ushered in a period known as "sede vacante" or "vacant see" the transition period between papacies when a few Vatican officials take charge of running the church.

NPR: In Manila, Catholics Pray For Smooth Succession

"It seems unimaginable that one could continue to use a communication tool so popular and powerful during the 'sede vacante' period, " Vatican Radio said, referring to the time during which the seat will be empty.

CNN: STORY HIGHLIGHTS

The first meeting isn't now expected until March 4, Father Lombardi said, since the official convocation to cardinals to come to Rome will only go out on March 1 the first day of what's known as the "sede vacante, " or the vacancy between papacies.

WSJ: Pope Benedict to Be Called 'Emeritus Pope'