Rugby league is also both a professional and amateur game, administered on a global level by the Rugby League International Federation. In addition to amateur and semi-professional competitions in the United States, Russia, Lebanon, Serbia, Europe and Australasia, there are two major professional competitions—the Australasian National Rugby League and the Super League. International Rugby League is dominated by Australia, England and New Zealand. In Papua New Guinea and New Zealand, it is the national sport. Other nations from the South Pacific and Europe also play in the Pacific Cup and European Cup respectively. Distinctive features common to both rugby codes include the oval ball and throwing the ball forward is not allowed so that players can gain ground only by running with the ball or by kicking it. As the sport of rugby league moved further away from its union counterpart, rule changes were implemented with the aim of making a faster-paced and more try-oriented game. Unlike American and Canadian football, the players do not wear any sort of protection or armour. The main differences between the two games, besides league having teams of 13 players and union of 15, involve the tackle and its aftermath:  Set pieces of the union code include the "scrum", which occurs after a minor infringement of the rules (most often a knock-on, when a player knocks the ball forward), where packs of opposing players push against each other for possession, and the "line-out", in which parallel lines of players from each team, arranged perpendicular to the touch-line, attempt to catch the ball thrown from touch. A rule has been added to line-outs which allows the jumper to be pulled down once a players' feet are on the ground. In the league code, the scrum still exists, but with greatly reduced importance as it involves fewer players and is rarely contested. Set pieces are generally started from the play-the-ball situation. Many of the rugby league positions have names and requirements similar to rugby union positions, but there are no flankers in rugby league. In England, rugby union is widely regarded as an "establishment" sport, played mostly by members of the upper and middle classes. For example, many pupils at public schools and grammar schools play rugby union, although the game (which had a long history of being played at state schools until the 1980s) is becoming increasingly popular in comprehensive schools. Despite this stereotype, the game, particularly in the West Country is popular amongst all classes. In contrast, rugby league has traditionally been seen as a working-class pursuit.