After releasing the ball, the shooting player may step on or cross the three-point line; the shot will still count for three points. Before shooting the shot, the shooter must have at least one foot on the floor outside of the line. If the player does not meet this requirement before shooting, then it is a foul and the shot cannot be taken. This rule was adopted in order to encourage teams to play more close-out games and less isolation matchups. It also allows referees to issue technicals if necessary instead of calling time out. Finally, it ensures that no point can be scored when a team has possession of the ball and stands outside of its lane. The three-point line exists to even out the advantage that height gives a shooter over someone of smaller build. By allowing players to step off the line, the need for any special treatment of center lanes or other adjustments is removed. This means that all areas of the court are treated equally and made available for scoring opportunities. In addition to being allowed to step off the line, shooters can also reach back with their arms to shoot. The ball must be released before reaching back with your arm, though; otherwise, it's a violation of the rules of basketball. Finally, players can use their hands to create space for themselves while taking shots.