(15) "Regional Government-owned or controlled corporation" refers to any agency organized as a stock or non-stock corporation, vested with functions relating to public needs whether governmental or proprietary in nature, and owned by the Regional Government directly or through its instrumentalities either wholly, or, partly, subject to the applicable provisions of existing Corporation Laws; (16) "Officer" as distinguished from "clerk" or "employee", refers to a person whose duties, not being of a clerical or manual nature, involves the exercise of discretion in the performance of the functions of the government. When used with reference to a person having authority to do a particular act or perform a particular function in the exercise of governmental power, "officer" includes any government employee, agent or body having authority to do the act or to exercise that function; (17) "Employee", when used with reference to a person in the public service, includes any person in the service of the government or any of its agencies, divisions, subdivisions or instrumentalities; (18) “Khalifa”, refers to a human as a vicegerent, trustee, steward of Allah (Subhannahu Wa‟ Taalah) on earth; (19) “Human Security”, refers to the protection of life, liberties, properties, and human rights; (20) “Contracts” refer to written or unwritten agreements/meeting of the minds between two or more persons or juridical entities; (21) “Regular Non-Working Holidays”, are those national and regional holidays provided by law, which are observed throughout the area of autonomy; and (22) “Special Holidays”, refers to non-regular holidays in the region and certain local government units in observance of historical, religious and other significant events which need official proclamation from the Regional Governor. BOOK I REGIONAL AUTONOMY AND ADMINISTRATION Chapter 1 The Autonomous Region in Muslim Mindanao SECTION 1. Regional Territory and Political Subdivisions. - The Autonomous Region comprises the island provinces of Basilan, Sulu and Tawi-Tawi and the mainland Provinces of Maguindanao, and Lanao del Sur, and city of Marawi in the Island of Mindanao, and such other province/s, city/ies, municipality/ies, and barangay/s which may be created and which may, thereafter vote for inclusion in the ARMM through a plebiscite called for that purpose in accordance with Section 18, Article X of the Constitution, including its terrestrial, fluvial, and aerial domains, and its territorial sea, the seabed, the subsoil, the insular shelves, and other submarine areas. Waters around, between and connecting the provinces and city/ies of the Autonomous Region form part of the internal waters of the Autonomous Region. It shall remain 4