Indonesian is the official and national language of Indonesia. It is a standardized variety of Malay, an Austronesian language that has been used as a lingua franca in the multilingual Indonesian archipelago for centuries. Indonesia is the fourth most populous nation in the world, with over 279 million inhabitants of which the majority speak Indonesian, which makes it one of the most widely spoken languages in the world. Indonesian vocabulary has been influenced by various regional languages and foreign languages. Many borrowed words have been adapted to fit the phonetic and grammatical rules of Indonesian.
Rencong alphabet, native writing systems found in central and South Sumatra. The text reads (Voorhoeve's spelling): "haku manangis ma / njaru ka'u ka'u di / saru tijada da / tang [hitu hadik sa]", which is translated by Voorhoeve as: "I am weeping, calling you; though called, you do not come" (in modern Malay "Aku menangis, menyerukan engkau, kaudiseru, tiada datang [itu adik satu]").
Kedukan Bukit Inscription, written in Pallava script, is the oldest surviving specimen of the Old Malay language.
Volksraad session held in July 1938 in Jakarta, where Indonesian was formally used for the first time by Jahja Datoek Kajo
The Youth Pledge was the result of the Second Youth Congress held in Batavia in October 1928. On the last pledge, there was an affirmation of Indonesian language as a unifying language throughout the archipelago.
An official language is a language having certain rights to be used in defined situations. These rights can be created in written form or by historic usage.
Trilingual signboard in Odia, English and Hindi in Odisha state of India