(1) The Principal Act is hereby amended by the substitution for section 232A (inserted by section 13 of the Act of 1984) of the following section:
"232A. Interpretation.
In this Part -
'child', in relation to a family, means a qualified child as defined in section 2(1) who normally resides with that family;
'couple' means a married couple or a man and woman who are not married to each other but are cohabiting as man and wife;
'family' means -
(a) a person who is engaged in remunerative full-time employment as an employee, and
(b) where such person is one of a couple living with or wholly or mainly maintaining his or her spouse, that spouse, and
(c) a child or children;
'family income supplement' shall be construed in accordance with section 232B;
'spouse' means each person of a couple in relation to the other;
'weekly family income' means, subject to regulations under section 232F, the amount of income received in a week by a family, less any income of a person who in respect of t