The 'Repetition' is another 'meta-event'. A repetition is always associated with another event, it is
realized when a given number of realization of a given event occurred without being triggered off.
The keywords associated with the 'Repetition' tag are:
Name: The name of the repetition
Event: The event correlated with the repetition
Number: The consecutive number of occurrences of the correlated event to be found for activating the repetition
It is possible to defined a 'Trigger' for a repetition (to detect that a repetition triggered off). It
is not possible to define a 'Repetition' for a repetition.
