Signlanguage
Sign language is a natural language that uses a visual-manual modality to convey meaning. It relies on hand shapes, movements, facial expressions, and body posture. Each sign language has its own grammar, lexicon, and conventions, and it is not simply a collection of gestures or pantomime. Deaf communities worldwide use distinct sign languages.
There are many sign languages; they are not mutually intelligible. Notable examples include American Sign Language
History: Sign languages have ancient roots in many communities. Large-scale development followed the creation of schools
Use and recognition: In many countries, sign languages are officially recognized as the language of Deaf communities.
Writing and learning: Some writing systems exist for sign languages, such as SignWriting and HamNoSys, but most