Section 3(1) of the Principal Act is amended as follows:(a) by inserting the following definition after the definition of development :discretionary permit means a permit to which section 57 applies;(b) by omitting the definition of dispensation ;(c) by inserting the following definition after the definition of Executive Commissioner :interim planning directive means an interim planning directive, issued under section 12A(2) , that is in force;(d) by inserting "or an interim planning scheme made under section 30M ," after " section 30F ," in the definition of interim planning scheme ;(e) by omitting "a planning directive" second occurring from the definition of planning directive and substituting "an interim planning directive" .