RULES IN BRIEF A swimmer must not touch the bottom of the pool All serious rule infringements result in a two-point penalty Lesser offences, such as missing the time limits, results in a one-point deduction If any part of a compulsory routine is omitted, a half-point penalty is deducted A whole team or duet will be disqualified if a swimmer voluntarily stops swimming during a routine, though if she stops during the pre-swim deck work, the routine can be restarted but two penalty points will be deducted Music must be kept within 90 decibels above water, although momentary peaks of 100 decibels are tolerated Video tape can be used as evidence by the referee in cases of dispute