6. enhance the capacity and competitiveness of the services sectors of State Parties. ARTICLE 3 Scope and Coverage 1. This Protocol shall apply to all measures by State Parties affecting trade in services. 2. For the purposes of this Protocol, trade in services means the supply of a service: 3. (a) from the territory of a State Party into the territory of any other State Party; (b) in the territory of a State Party to the service consumer of any other State Party; (c) by a service supplier of a State Party, through commercial presence in the territory of any other State Party; (d) by a service supplier of a State Party, through presence of natural persons in the territory of any other State Party. (a) The Protocol shall not apply to the following measures affecting air transport: (i) traffic rights, however granted; or (ii) services directly related to the exercise of traffic rights. (b) This Protocol shall apply to measures affecting: (i) (ii) (iii) aircraft repair and maintenance services; the selling and marketing of air transport services; computer reservation system (CRS) services. 4. This Protocol shall apply to measures affecting trade in services taken by central, regional or local governments and authorities as well as by non-governmental bodies in the exercise of powers delegated by central, regional or local governments or authorities. In fulfilling its obligations and commitments under this Protocol each State Party shall take such reasonable measures as may be available to it to ensure their observance by regional and local governments and authorities and nongovernmental bodies within its territory. 5. (a) "Services" includes any service in any sector except services supplied in the exercise of governmental authority. 5