The alphabet of local culture in Indonesia were influenced by the Palawa alphabet from India. The script was written in tree bark and bamboo and have been spreading in Sumatera (Batak, Kerinci, Bengkulu, and Lampung).
The Palawa alphabet in Sumatera are longer used in Bengkulu and Batak. This authentic script of Nusantara and Southeast Asia was divided into five groups, which are:
- Hanacaraka alphabet: Java, Sunda, and Bali,
- Ka Ga Nga alphabet: Bengkulu (Rejang, Lembak, Serawai, and Pasemah), Kerinci, and Lampung,
- Batak alphabet: Angkola, Mandailing, Toba, Simalungun, Pak Pak, Dairi, and Karo,
- Sulawesi alphabet: Bugis, Makassar, and Bima, and
- Philippine alphabet: Bisaya, Tagalog, Tagbanuwa, and Mangyan.
Ka Ga Nga alphabet can be found in ancient script from “Situs Ulak Lebar” from West Lubuk Linggau, West Sumatera. Thus, this alphabet also was evolved and hereditary inheritable in Rejang tribe in Bengkulu.
Source: Paluseri, Dais Dharmawan., Murdiartono, Dwi., Syahdenal, Lintang Maraya. Warisan Budaya Takbenda Indonesia. Direktorat Internalisasi Nilai dan Diplomasi Budaya Direktorat Jenderal Kebudayaan Kementerian Pendidikan dan Kebudayaan.