51. In Article 69 (grounds for applying for modifications)—
(a)in paragraph (2) for “about the manner of dealing with applications under this Article” substitute “requiring applications under this Article to meet prescribed requirements”,
(b)in paragraph (3) omit sub-paragraph (a),
(c)in paragraph (4)(a) omit “(a) or”, and
(d)in paragraph (5)(a) omit “either of” and for “paragraph (3)(a) or (b)” substitute “paragraph (3)(b)”.