Papal Authority (neat things the pope can do)
The pope can appoint NPCs as archbishops. Some archbishops begin game as belonging to popes ORG. When these die, pope can allow the local king to appoint a priest to that position. The pope can, of course, require some consideration from the king for allowing the king to appoint the new archbishop.
The Pope can admit NPCs to Holy Orders. The NPC must have Piety Extraordinare or Pious skills. NPC gets a one time stature boost equal to PIOUS/10 and Piety Extreme/3. These NPCs may not be used to lead armies or do dirty deeds. If they are, their current owner is excommunicated (if the pope does it, well, the lords of Christendom have to do something about it). A nobles son may be admitted to Holy Orders without the needed skills at the popes discretion (you know what that means, so dig deep.) All clergy thus represented in the game should belong to the popes organization. These NPCs must be sent to the pope to be "hired."
Daughters may also become sisters and, once they are over age 40, may be promoted to Abbess. Her name is then changed to ABBESS FIRSTNAME and her Family Name to that of a Province in which she will reside (and preside over a rich Abbey). Seducing a nun is an excommunicatable offense, as is any assault on the clergy. If an abbess gets pregnant (not likely) she gets demoted back to sister. A nun who has been seduced and gives birth cannot become an abbess.
Tax benefits of controlling clergy
In every year ending in 5 or 0, you may call upon your archbishops for a special church tax. Those archbishops that are the sons of the nobility of your kingdom will automatically agree. Non-noble archbishops require the pope to issue a bull in favor of the taxation (in effect, make an announcement that he will not oppose his archbishops. Thus this tax is different from the regular church tax in that, and the other, respects.) For each archbishop that the king thus controls, he gets one thousandth of the national GDP. For example, the GDP of England at the beginning of the game is 943,550 kd. If the king controlled two archbishops, he would get 1,887 kd. The Heralds have access to the national GDP data and the College of Heralds will supervise the collection of these taxes.
For an abbess, she can collect one thousandth of the GDP of the province her abbey is in. Only one abbey per province allowed. Abbey must be in the kingdom of her king. Same rules regarding the pope as with archbishops.