Languages with official status in India
The Indian constitution, in 1950, declared Hindi in Devanagari script to be the official language of the union. Unless Parliament decided otherwise, the use of English for official purposes was to cease 15 years after the constitution came into effect, i.e., on 26 January 1965. The prospect of the changeover, however, led to much alarm in the non Hindi-speaking areas of India, especially Dravidian-speaking states whose languages were not related to Hindi at all. As a result, Parliament enacted the ,
Indian Signing System
The Indian Signing System or Indian Sign System (ISS) is a convention for manually coded language used in India. It uses the words (signs) of Indian Sign Language with the word order and grammar of at least six official oral languages of India, including Hindi (Signed Hindi), Marathi (Signed Marathi), and Tamil (Signed Tamil).