4. Section 3 of the Principal Act is amended—
(a) by omitting from subsection (1) the definition of “bail undertaking”;
(b) by omitting from subection (1) the definition of “offence” and substituting the following definition:
“ ‘offence' includes—
(a) an alleged offence; and
(b) except in the case of paragraph 7 (1) (a)—a breach of the peace or an apprehended breach of the peace;”;
(c) by inserting after paragraph (2) (a) the following paragraph:
(ab) a person arrested for a breach of the peace or an apprehended breach of the peace; and
(d) by omitting from paragraph (3) (a) “undertaking or”.