Tshangla is a Sino-Tibetan language of the Bodish branch closely related to the Tibetic languages and much of its vocabulary derives from Classical Tibetan. Tshangla is primarily spoken in Eastern Bhutan and acts as a lingua franca in the country alongside Dzongkha; it is also spoken in Indian state of Arunachal Pradesh and Tibet. Tshangla is the principal pre-Tibetan (pre-Dzongkha) language of Bhutan.
The Tibetan script is a segmental writing system (abugida) of Indic origin used to write certain Tibetic languages, including Tibetan, Dzongkha, Sikkimese, Ladakhi, Jirel and Balti.
It has also been used for some non-Tibetic languages in close cultural contact with Tibet.
The printed form is called uchen script while the hand-written cursive form used in everyday writing is called umê script. This writing system is used across the Himalayas, and Tibet.
The script is closely linked .