The Rejang script, sometimes spelt Redjang and locally known as Surat Ulu ('upstream script'), is an abugida of the Brahmic family, and is related to other scripts of the region, like Batak, Buginese, and others. Rejang is a member of the closely related group of Surat Ulu scripts that include the script variants of Bengkulu, Lembak, Lintang, Lebong, and Serawai. Other scripts that are closely related, and sometimes included in the Surat Ulu group, are Kerinci and Lampung. The script was in use prior to the introduction of Islam to the Rejang area; the earliest attested document appears to date from the mid-18th century CE. The Rejang script is sometimes also known as the KaGaNga script following the first three letters of the alphabet. The term KaGaNga was never used by the users of the script community, but it was coined by the British anthropologist Mervyn A. Jaspan (1926–1975) in his book Folk literature of South Sumatra. Redjang Ka-Ga-Nga texts. Canberra, The Australian National University 1964.