How do code violations and point penalties work?

Offences such as audible or visible obscenity, racket or ball abuse, verbal or physical abuse, unsportsmanlike conduct and coaching violations are penalised on the Point Penalty Schedule:

• After the third code violation, the ITF Supervisor decides whether each further offence is a default.
• A penalty under the schedule is final and can't be appealed.
• The Supervisor can also default you immediately for a single serious violation.
• Your coach's behaviour counts against you. For this rule a "coach" includes any representative or relative, so parents are covered too.
• Time violations between points are handled separately: a server gets a warning then loses a serve for each later violation; a receiver gets a warning then a point penalty.