(i) Attack line: On each court, an attack line, whose rear edge is drawn 3 m back from the axis of the centre line, marks the front zone.
(ii) Setter : A player specialized to lift the ball for the smash. It is performed over the coming ball from own teammates. This player is also known as booster.
(iii) Back Zone : The area behind the attack line or the rear area of the court to restrain Libro to come in front zone or attack line.
(iv) Rotation: After ev ery change of service: the players of serving side rotate in clockwise otherwise it may be foul.
