11 “operate”, in relation to a, cellular telecommunication or telecommunication system, means to install, work, maintain, develop or hire the cellular telecommunication or telecommunication apparatus comprising the system concerned; “person in charge”, in relation to⎯ (a) a vessel, means any person, other than a pilot, having command or charge of the vessel; (b) an aircraft, means any person in command or in charge of the aircraft; “philatelic archival materials” bears the meaning assigned to that term by section fifty-two; “postage” means the duty payable for the transmission of articles by post; “postage stamp” means any piece of paper or other substance or material whatsoever having thereon the stamp, mark or impression of any die, plate or other instrument made or used by a postal licensee for the purpose of denoting any postage; “postal article” includes any letter, postcard, printed paper, small packet, newspaper, literature for the blind, parcel or other article whatsoever in the course of transmission by post; “postal licence” means a licence that authorises the licensee to operate a postal service; “postal order” means a money order in a form provided by a postal licensee on which a fixed amount for remittal is denominated; “postal service” means a service comprising⎯ (a) the conveyance for reward of postal articles from one place to another, whether by land, sea or air; and (b) the performance of all services incidental to the receiving, collecting, sending, despatching and delivering of postal articles; and (c) the issuance of money orders and postal orders; and includes a commercial courier service, but does not include⎯ (i) the provision of postage stamps, unless expressly authorised by the terms of a postal licence; or (ii) the provision of an electronic mail service, except in accordance with a telecommunication licence; “post box” means any letter box, mail box or other receptacle for the reception of postal articles for transmission by post; “post office” includes⎯ (a) any house, building, room, place or structure or any vehicle used for the handling or transmission of postal articles or telegrams; and (b) any post box; “prescribe” means prescribe by regulations made in terms of section ninety-nine; “private automatic branch exchange” means an automatic telephone system connected to a telephone exchange by one or more exchange lines, which system serves the person to whom such exchange line or lines are so supplied;