 The sand drawings consist of around 300 different designs, and seem to be shared across language groups.In the 1990s, elements of the drawings were adapted into a modern constructed script called Avoiuli by the Turaga indigenous movement on Pentecost Island.Rongorongo, said to have originally been called "kohau motu mo rongorongo" ("lines of inscriptions for chanting out"), is the only pre-contact indigenous Austronesian system of glyphs that appear to be true writing or at least proto-writing.