Complete set of sign language movements
Sign Language is a language that prioritizes manual communication, body language, and lip movements, not sounds, to communicate. Deaf people are the main group that uses this language, usually by combining hand shapes, orientations and movements of the hands, arms, and body, and facial expressions to express their thoughts.
Contrary to the opinion of many people, in reality there is no international sign language that has been successfully implemented. Sign language is unique in its type in each country. Sign language can be different in countries that speak the same language. For example, in the United States and Britain despite having the same written language, they have a completely different sign language (American Sign Language and British Sign Language). The opposite also applies. There are countries that have different written languages (for example: English with Spanish), but use the same sign language.
For Indonesia, there is a sign language, namely Indonesian Sign Language (BISINDO), whose development is supported by one of the donor agencies from Japan involving the Chinese University of Hong Kong and the University of Indonesia. For the Indonesian Language Signal System (SIBI) is a signaling system (not sign language) made by people listening without involving deaf people in extraordinary education education.