code: function () {
  		if (!this.hasImportedEvents) {
  			var point = this,
  				options = merge(point.series.options.point, point.options),
  				events = options.events,
  				eventType;
  
  			point.events = events;
  
  			for (eventType in events) {
  				addEvent(point, eventType, events[eventType]);
  			}
  			this.hasImportedEvents = true;
  
  		}
  	}
docs: Import events from the series' and point's options. Only do it on
  demand, to save processing time on hovering.