Rule 1. Playing Area 1.4.2 - Service Zone - The service zone is extended to include the full width of the 9 meter area behind the end lines. Rule 2. Net and Posts 2.4 - The height of the net may be varied for age-group competition. Rule 3. Ball 2 3.1 - Inside pressure of ball (stated in kg/cm ) corrected. Rule 5. Players' Equipment 18.104.22.168 - Required placement for uniform number by 1998 season. 5.3.1 - Jewelry prohibited; other equipment subject to judgement. Rule 8. Preparation for the Match 8.1.2 - In deciding game, the first referee may designate the second referee to make the coin toss. Rule 11. Substitution of Players 11.3 - Time allowed to determine if an injured player can continue in game extended from 15 to 30 seconds. Rule 12. Playing Actions 22.214.171.124 - Limiting heights for a ball striking objects above the playing area removed. Rule 14. Playing the Ball 14.4.1 - The ball may touch any part of the body. Limitation of knee and above removed. 14.4.2 - Restrictions regarding contact of the ball restated: The ball must be hit, not caught or thrown. 126.96.36.199 - All multiple contacts allowed on first team hit. Limitation of "unless it is played overhand using fingers" removed. Rule 16. Player at the Net 16.2.1 - "Inside the antennas" added to clarify rule regarding blocker reaching beyond the plane of the net. 16.2.3 - Addition: Provision made to allow player to contact ball over opponent's court in order to return it to player's own playing space. 16.4.1 - Rule expanded to allow insignificant contact with the net by a player not involved in the action of playing the ball. Rule 18. Attack-Hit 18.1 - Commentary - Definition of attack-hit excludes first or second team contact that is legally blocked as long as the ball does not completely pass the plane of the net untouched. 18.4 - Commentary - An attack-hit fault and a blocking fault committed simultaneously will result in a double fault. Rule 19. Block 19.3 - Any third team hit by the opponents may be blocked at any time after the contact. 19.4.2 - Contact with the ball during a block may be with any part of the body (See Rule 14.4.1) 19.5 - Commentary - A blocking fault and an attack-hit fault committed simultaneously will result in a double fault. Rule 20. Regular Game Interruptions 20.7 - Any improper request that affects of delays a game will be sanctioned as a team delay. Rule 24. Misconduct 24.2.4 - "Spectator area" added to the list of venues that must be vacated by a disqualified player. Rule 27. Second Referee 27.2.7 - The second referee is responsible for reporting third entry of a player to the first referee and coach/captain of the player's team. Rule 29. Line Judges 188.8.131.52 - Duties include reporting foot faults of players off the court at the time of service.