https://en.wikipedia.org/wiki/English_Braille
WebEnglish Braille, also known as Grade 2 Braille, is the braille alphabet used for English.It consists of around 250 letters (), numerals, punctuation, formatting marks, contractions, and abbreviations ().Some English Braille letters, such as ⠡ ch , correspond to more than one letter in print.. There are three levels of complexity in English Braille.