Definition
(2) Notwithstanding that it does not reach the extent defined in paragraph one, where a person’s ability to control his behaviour in respect of an act he has committed is diminished then a term of imprisonment for a term of twenty-five years where the offence committed requires a penalty of aggravated life imprisonment shall be imposed. Otherwise the penalty to be imposed may be reduced by no more than one-sixth.
The penalty to be imposed may be enforced partially or completely as a security measure specific to mentally disordered persons, provided the length of the penalty remains the same.