LIBRAS is the acronym for Brazilian Sign Language which uses the visual-manual modality to convey meaning. Language is expressed via the manual sign stream in combination with non-manual elements. Although signing is used primarily by the deaf and hard of hearing, it is also used by hearing individuals, such as those unable to physically speak, those who have trouble with spoken language due to a disability or condition or those with deaf family members.
Sign languages are not universal and they are not  mutually intelligible , although there are also striking similarities among them.
This accessibility resource is used on TV, cultural events (theater plays, exhibitions, fairs, etc.), seminars, lectures and others.