Filipino (English: /ˌfɪlɪˈpiːnoʊ/; Wikang Filipino, [wɪˈkɐŋ ˌfiːliˈpiːno]) is an Austronesian language. It is the national language (Wikang pambansa / Pambansang wika) of the Philippines, and one of the two official languages of the country, with English. It is a standardized variety of Tagalog based on the native dialect, spoken and written, in Metro Manila, the National Capital Region, and in other urban centers of the archipelago. The 1987 Constitution mandates that Filipino be further enriched and developed by the other languages of the Philippines. Filipino is only used as a tertiary language in the Philippine public sphere.