We'll all be delighted every time Ireland win a penalty during the Rugby World Cup, but if you've ever wondered what exactly the referee's decision was for, then pay attention.
Welsh referee Nigel Owens has taken the time to explain what each and every hand signal offered by officials on the rugby field mean to help enhance your World Cup experience.
Whether it's a crooked feed to a scrum or an infringement at the breakdown, Owens has kindly demonstrated each signal in a video for
WalesOnline.
Watch and learn.
