Article 2 InterpretationI1 Northern Ireland In these rules any reference to the “principal rules” is a reference to the Prison and Young Offenders Centre Rules (Northern Ireland) 1995f1. Annotations Commencement I1 Art. 2 in operation at 1.4.1997, see art. 1 Footnotes f1 S.R. 1995 No. 8 ← Article 1 Article 2 Article 3 →