Its present canon law requires that an ecumenical council be convoked and presided over, either personally or through a delegate, by the Pope, who is also to decide the agenda ; but the church makes no claim that all past ecumenical councils observed these present rules, declaring only that the Pope's confirmation or at least recognition has always been required, and saying that the version of the Nicene Creed adopted at the First Council of Constantinople ( 381 ) was accepted by the Church of Rome only seventy years later, in 451.

Its rules are a mix of field hockey, rugby and the Eton wall game.

Its main rules are as follows:

Its 1907 constitution and laws had voter registration rules that effectively disfranchised most blacks ; this also barred them from serving on juries or in local office, a situation that lasted until federal civil rights legislation was passed by the US Congress in the mid-1960s.

Its treatment of phonology as rules that operate on features, as well as its particular feature scheme, survive in various altered forms in many current theories of phonology.

Its web site contains a link to the official rules of Pétanque and a link to a list of its national members.

Its own rules specify that perry or pear cider may contain no more than 25 % apple juice.

Its rules of siegecraft were much studied in the Middle Ages.

Its proper use follows a set of fairly complex rules as in these examples provided by Bruce Donaldson:

Its operating authority stems from a provision of the Starfleet charter — Article 14, Section 31, from which its name is derived — that makes allowances for " bending the rules " during times of extraordinary threats.

Its rules should, in theory, work the same way for any setting, world, environment, or genre in which one would want to play.

Its rules are similar to those of kickboxing but they have been simplified to promote exciting matches that may end in a knockout win.

The generality and abstraction of the rules permit both the extensive utilization of law and its application to the case, without any discussion of such matters as the moral claims of the parties, the nature of the market for pharmaceuticals and the problems generated by misleading advertising ... Its doctrinal integrity helps to achieve legitimacy, because the law can be presented as objective and neutral, not a matter of politics or preference, but a settled body of rules and principles, legitimated by tradition and routine observance, and applied impartially and fairly to all citizens.

Its jurisdiction extends beyond these issues to include several more specific areas, as defined by Senate rules.

Its objective is to establish rules and measures to use against attacks over the Internet.

Its quick and simple rules have made it popular among children of all age groups.

Its members participate on the institutional processes, establishing academic rules and collaborating with other organisms of the University of Puerto Rico system.

Its objective was to preserve the Buddha's sayings ( suttas ) and the monastic discipline or rules ( Vinaya ).

Its rules changed almost yearly for the next quarter century.

Its advantages over outline fonts include reducing number of vertices needed to define a glyph, allowing the same vertices to be used to generate a font with a different weight, glyph width, or serifs using different stroke rules, and the associated size savings.

Its moves have been slightly altered to comply with the modern rules.

Its statute that it " aims at promoting the physical training of its members by means of sporting activities in the form of Rock ' n ' Roll dance tournaments, including the acrobatic variations ( acrobatic rock ' n ' roll ) as well as Rock ' n ' Roll and Boogie Woogie, Lindy Hop, Formation and alternative styles in line with the rules and sporting presentations ".

Linguists Morris Halle and Samuel Jay Keyser developed a set of rules ( English Stress: Its Forms, Its Growth, and Its Role in Verse, Harper and Row, 1971 ) which correspond with those variations which are permissible in English iambic pentameter.

Its early morning patrons were coachmen, who fortified themselves for the day with that delicacy.

Its people, including Pierre Bottineau and other American Fur Company employees and the refugees from Fort Garry, were joined by the remaining Scots and Swiss from Fort Snelling when Major Joseph Plympton expelled them from the reservation in May 1840.

Its entire complement of non-commissioned officers on the platoon level had departed as cadre for another unit, and its vehicles were still those used in the drive across Luzon in World War 2.

Its costive deliberations were likened to those of the British courts of chancery mercilessly caricatured by Dickens in Bleak House.

* That ethnographic work was often ahistorical, writing about people as if they were " out of time " in an " ethnographic present " ( Johannes Fabian, Time and Its Other ).

Its use was taught in the Calmecac to the temalpouhqueh, who were students dedicated to take the accounts of skies, from childhood.

Its chemical composition makes it difficult to match the amber to its producers – it is most similar to the resins produced by flowering plants ; however, there are no flowering plant fossils until the Cretaceous, and they were not common until the Upper Cretaceous.

Its founders were often away as well ; in the middle of harvesting, they left for a lecture tour through Providence, Rhode Island, New York City, and New Haven, Connecticut.

Its residents were removed to settle on the Aventine Hill in Rome as new citizens, following the Roman traditions from wars with the Sabines and Albans.

Its name means " no feet " in Greek, and it represents a bird-of-paradise ( which were once believed to lack feet ).

Its invention is credited to the Celts, the Romans were thought to have adopted their design.

Its New York offices were on the 92nd and 98th – 105th floors of the South Tower of the World Trade Center at the time of the September 11, 2001 terrorist attack.

Its initial successes were neutralized by the reverses of Abensberg, Landshut and Eckmuhl but, after the evacuation of Vienna, the archduke won a strong victory at the Battle of Aspern-Essling but soon afterwards lost decisively at the Battle of Wagram.

Its dedicatee was Count Moritz von Fries, a patron to whom the fourth violin sonata, the string quintet of the same year, and the seventh symphony were also dedicated.

Its guano deposits were mined by the American Guano Company from 1859 to 1878.

Its Jewish residents were expelled by the military order of Hadrian.

Its first modern incidence in biological warfare were when Scandinavian " freedom fighters " supplied by the German General Staff used anthrax with unknown results against the Imperial Russian Army in Finland in 1916.

Its proximity to the University of Birmingham, the city centre and the ‘ trendy ’ area of Moseley were all contributing factors.

Its city walls were much imitated ( for example, see Caernarfon Castle ) and its urban infrastructure was moreover a marvel throughout the Middle Ages, keeping alive the art, skill and technical expertise of the Roman Empire.

Its strong industrial tradition dates to the 19th century, when Bohemia and Moravia were the economic heartland of the Austro-Hungarian Empire.

" Its practitioners had difficulty convincing engineers that they were engineers and chemists that they were not simply chemists.

Its depth, steep east and west sides with shallow north and south ends is typical of the Finger Lakes, as they were carved by glaciers during the last ice age.

Its notable victories were the Catholic Emancipation Act of 1829, the Reform Act of 1832, and the repeal of the Corn Laws in 1846.

Its functions were replaced by a fans forum which met for the first time in December 2008.