of play is divided by a solid "halfway" line, drawn perpendicular to the sidelines at their midpoint. A 0.5m line is marked perpendicular to the halfway lines at its midpoint, designating the spot where the kickoffs shall be taken. The areas between each goal line and the halfway line are known as "halves" as in other football codes. A pair of solid lines are also drawn perpendicular to the sidelines, 22 metres (formerly 25 yards) from each end of the field of play and called the 22-metre lines, or "22"s. An area at each end, also known as the "22", is bounded by, but does not include, the sidelines, goal line and 22-metre line. In this area, a defensive player who cleanly catches a ball kicked by the other team, without the ball having already touched the ground after the kick, is entitled to claim a free kick, or "mark". Additional broken or dashed lines (of 5 metre dash lengths, according to the Laws) are drawn in each half or on each side of, the field, each with specific purposes under the Laws: "10-metre" lines: Dashed lines 10 metres either side of, and parallel to, the halfway line, designating the minimum distance a receiving team must retreat when receiving a kick-off, and the minimum distance a kick-off must travel to be legal. Equivalent to the 40-metre lines in rugby league but generally marked differently. "5-metre" lines: Dashed lines 5 metres into the field of play, parallel to each goal line. Scrums can be packed no nearer to each goal line than this line, and referees will often penalise scrum and ruck infringements in this area more harshly as defending sides will often try to stifle the attacking side's breakdown play. "Tram tracks/tramlines": Unnamed in the Laws and sometimes also referred to, confusingly, as the "5-metre" and "15-metre" lines, these two pairs of dashed lines are drawn parallel to each sideline, 5 metres and 15 metres, respectively, into the field of play from the nearer sideline, terminating at each of their respective ends' 5-metre line (parallel and adjacent to the goal line). The area between these lines are where players must stand when contesting a lineout throw. Additionally, the area between the two perpendicular sets of "5-metre" lines (i.e. 5 metres from each sideline and 5 metres from each goal line) is designated the "scrum zone". Where an offence occurs outside