1.   He looked frail and tired, not like the energetic new pontiff of two decades ago who launched a crusade against communism from the same plaza in downtown Warsaw.

2.   However, since popes serve for life, conclaves to choose a new pontiff are rare.

3.   No longer will cardinals be able to choose new pontiffs by acclamation, in which electors unanimously proclaim one name as their choice without voting, presumably divinely inspired.

4.   No longer will cardinals be able to choose new pontiffs by acclamation, in which electors unanimously proclaim one name as their choice without voting.