Section 316 (inserted by section 12 of the Social Welfare Act, 1989) of the Principal Act is hereby amended by -
(a) the insertion in subsection (2) after "subsection (1)" of "(subsequently referred to in this Part as the ‘liable relative’)",
(b) the substitution in subsections (2), (3) and (4) for "the person liable to contribute" of "the liable relative" in each place in which it occurs,
(c) the substitution in subsection (4) for "the person so liable" of "the liable relative", and
(d) the insertion after subsection (4) of the following subsections:
"(5) An order made by the District Court under subsection (4) shall, for the purposes of its variation or enforcement, be deemed to be an order for payment by instalments made under section 17 of the Enforcement of Court Orders Act, 1926, and the said section 17 shall be construed accordingly.
(6) The District Court may, on the application of either the liable relative or the competent authority, vary in accordance with the provi