Section 4: Classification and numbering of Acts

(1) The Clerk of the National Assembly shall in each year distinguish between Acts having application throughout the Federation and Acts having application only within the Federal Territory by assigning to them numbers consecutive in each series beginning in each year with the number one, and shall insert the date of commencement or, if the date of commencement is deferred, a reference to the section.
(2)
The numbers shall be assigned by the Clerk of the National Assembly forthwith upon the return to him of the duplicate Schedule as approved, and where necessary in any year the numbers already assigned in printed copies of Acts may be altered under the authority of this subsection on certificate by the Clerk of the National Assembly, and if altered, a notice thereof shall be published in the Federal Gazette.