sentence: Braille uses cells of six raised dots, in two columns of three dots.
sentences_after: The dot positions on the left are numbered one, to three, the ones on the right four to six, as shown in the picture.
concept_name: Braille
headings: Braille The Braille alphabet The Braille cell
categories: Braille Tactile alphabets Assistive technology Encodings Blindness Latin alphabet representations Writing systems Encodings