Kalimantan Tengah Province, including Kotawaringin Timur, Katingan, Kota Palangka Raya, Pulang Pisau, Kapuas, and Gunung Mas regencies; upper reaches or headwaters of Kapuas, Kahayan, Katingan, and Mentaya rivers.
3 (Wider communication). Widely used as LWC for trade in much of Kalimantan, from Barito to Sampit rivers. Used in many domains (church, school, village-level government, market, etc.).
Latin script [Latn].