The Batak script (natively known as Surat Batak, Surat na Sampulu Sia (lit. 'the nineteen letters'), or Sisiasia) is a writing system used to write the Austronesian Batak languages spoken by several million people on the Indonesian island of Sumatra. The script may be derived from the Kawi and Pallava script, ultimately derived from the Brahmi script of India, or from the hypothetical Proto-Sumatran script influenced by Pallava.
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