Regulation 4

freedom from censorship of its official communications, subject to any agreement between the Government and the ADB on any appropriate security precaution that may be adopted;

the right in Singapore to use codes and dispatch and receive correspondence and other communications either by courier or in sealed bags which are to have immunities and privileges no less favourable than those accorded to a diplomatic mission under Article 27 of the Vienna Convention on Diplomatic Relations; (c)exemption from any obligation to make employer contribution to the Central Provident Fund for any officer or staff member of the Office if he or she is not a citizen or permanent resident of Singapore.