Section 196 of the Principal Act is amended as follows:(a) by inserting in subsection (1) "or a day specified in the guideline or code of practice as the day on which it is to take effect" after "or formulated" ;(b) by inserting the following subsection after subsection (1) :(1A) An amendment or revocation, of a guideline or a code of practice, that is made by the Director takes effect on the day on which it is made or a day specified in the guideline or code of practice as the day on which it is to take effect.(c) by omitting from subsection (2) "referred to in subsection (1) " and substituting ", or an amendment of a guideline or code of practice," ;(d) by omitting from subsection (3) "referred to in subsection (1) " and substituting ", or an amendment of a guideline or code of practice" ;(e) by inserting in subsection (3) ", or the amendment," after "the guideline or code of practice" ;(f) by inserting in subsection (4) ", or an amendment of a guideline or code of practice," after "A guideline or code of practice" ;(g) by inserting in subsection (4) ", or the amendment," after "the guideline or code of practice" ;(h) by inserting in subsection (5) ", or an amendment of a guideline or code of practice," after "a guideline or code of practice" ;(i) by inserting in subsection (5) ", or amendment," after "disallow the guideline or code of practice" ;(j) by inserting in subsection (5) ", or the amendment," after "negatived, the guideline or code of practice" .