The Warlpiri language in both manual and vocal modes is used by Warlpiri Aboriginals in the central desert region of Australia. Warlpiri people use the signed version when silence is observed. They also use it (manual signs) in hunting. Unlike other signed languages, Warlpiri signed and spoken languages share the same syntax (grammatical structure) like written and spoken complementarity. In addition to Warlpiri, there are some other indigenous signed languages used by other Aboriginal tribes in Australia.
Madell, Samantha. "Warlpiri Sign Language and Auslan - A Comparison". Master of Arts (Applied Anthropology and Development). Macquarie University, Sydney, Australia. 1998. http://members.ozemail.com.au/~gamgee/writing_handtalk.html
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