Death and election The current regulations regarding a Papal interregnum -- i.e., a Sede Vacante "vacant see" -- were promulgated by John Paul II in his 1996 document Universi Dominici Gregis. During the Sede Vacante, the Sacred College of Cardinals, composed of the Pope's principal advisors and assistants, is collectively responsible for the government of the Church and of the Vatican itself, under the direction of the Cardinal Chamberlain; however, canon law specifically forbids the Cardinals from introducing any innovation in the government of the Church during the vacancy of the Holy See. Any decision that needs the assent of the Pope has to wait until a new Pope has been elected and takes office. The Pope's death is officially determined by the Cardinal Chamberlain by gently tapping the late Pope's head thrice with a golden hammer and calling his name. A doctor may or may not have already determined that the Pope had passed away. The Cardinal Chamberlain then retrieves the Fisherman's Ring. Usually the ring is on the Pope's right hand. But with Paul VI, he had stopped wearing the ring during the last years of his reign, and left it in his desk. In other cases the ring might have been removed for medical reasons. The Chamberlin cuts the ring in two in the presence of the Cardinals. The deceased Pope's seals are defaced, to keep the Pope's seal from ever being used again, and his personal apartment is sealed. The body then lies in state for a number of days before being interred in the crypt of a leading church or cathedral; the Popes of the Twentieth century have all been interred in St. Peter's Basilica, but it is expected that the reigning Pope, Pope John Paul II, will be interred in his native Poland. A nine-day period of mourning (novem dialis) follows after the interment of the late Pope. The Pope was originally chosen by those senior clergymen resident in and near Rome. In 1059, the electorate was restricted to the Cardinals of the Holy Roman Church, and the individual votes of all Cardinal Electors were made equal in 1179. The Pope is usually a member of the Sacred College of Cardinals, but theoretically any male Catholic (including a layman) may be elected; Pope Urban VI was the last Pope who was not already a cardinal at the time of his election. Canon law requires that if a layman or non-bishop is elected, he receives episcopal consecration from the Dean of the College of Cardinals before assuming the Pontificate. Under present canon law, the Pope is elected by the cardinal electors, comprising those cardinals who are under the age of 80. The Second Council of Lyons was convened on May 7, 1274, to regulate the election of the Pope. This Council decreed that the cardinal electors must meet within ten days of the Pope's death, and that they must remain in seclusion until a Pope has been elected; this was prompted by the three-year Sede Vacante following the death of Pope Clement IV in 1268. By the mid-Sixteenth century, the electoral process had more or less evolved into its present form, allowing for alteration in the time between the death of the Pope and the meeting of the cardinal electors. Traditionally the vote was conducted by acclamation, by selection by committee, or by plenary vote. Acclamation was the simplest procedure, consisting entirely of a voice vote, and was last used in 1621. The reigning Pope, Pope John Paul II, has abolished vote by acclamation and by selection by committee, and henceforth all Popes will be elected by full vote of the Sacred College of Cardinals by ballot. The election of the Pope almost always takes place in the Sistine Chapel, in a meeting called a "conclave" (so called because twenty days after the Pope's death, the present cardinal electors are theoretically locked in, cum clavi, until they elect a new Pope). Three cardinals are chosen by lot to collect the votes of absent cardinal electors (by reason of illness), three are chosen by lot to count the votes, and three are chosen by lot to review the count of the votes. The ballots are distributed and each cardinal elector writes the name of his choice on it and pledges aloud that he is voting for "one whom under God I think ought to be elected" before depositing his vote. Balloting continues until a Pope is elected by two-third majority (since the promulgation of Universi Dominici Gregis the rules allow for a simple majority after a deadlock of twelve days). One of the most famous parts of the conclave is the means by which the results of a ballot are announced to the world. Once the ballots are counted, they are burned, and the smoke indicates the results: black smoke (sfumata), created using straw with the ballots, announces that the vote was not decisive, and white smoke announces the election of a new Pope. The Dean of the College of Cardinals asks the Pope-elect to confirm his acceptance, and then announces the name he has chosen for himself (starting in 535, the Pope has customarily chosen a new name for himself during his Pontificate). The senior cardinal deacon then announces from a balcony over St. Peter's Square the following proclamation: Annuntio vobis gaudium magnum! Habemus Papam! ("I announce to you a great joy! We have a Pope!") Until 1978, the Pope's election was followed in a few days by a procession in great pomp and circumstance from the Sistine Chapel to St. Peter's Basilica, with the newly-elected Pope borne in the sedia gestatoria. There the Pope was crowned with the triregnum and he gave his first blessing as Pope, the famous Urbi et Orbi ("to the City [Rome] and to the World"). Another famed part of the coronation was the lighting of a torch which would flare brightly and promptly extinguish, with the admonition Sic transit gloria mundi ("Thus fades worldly glory"). Traditionally, the pope-elect takes the Papal oath (the so called "Oath against modernism") at his coronation, but John Paul I and later John Paul II have refused to do so. As has been hitherto noted, the Latin term Sede Vacante ("vacant seat") refers to a Papal interregnum, or the period between the death of the Pope and the election of his successor. From this term is derived the name Sedevacantist, which designates a category of dissident, schismatic Catholics who maintain that there is no canonically and legitimately elected Pope, and that there is therefore a Sede Vacante; one of the most common reasons for holding this belief is the idea that the reforms of the Second Vatican Council and especially the replacement of the Tridentine Mass with the Novus Ordo Missae are heretical, and that, per the dogma of Papal infallibility (see above), it is impossible for a valid Pope to have done these things.