ABSTRACT
Presentation of written information to blind individuals has traditionally been accomplished through the use of Braille. For presenting text, while Braille may not have been an ideal solution, it has certainly been a satisfactory one. Traditional Braille utilizes a raised character set composed of six dots per character, which limits the character set to 64 possible characters. Even for simple text, this does not represent an adequate alphabet. To solve the problem, most Braille notations use multicharacter representation. For example, “A” (capital a) is represented in American standard Braille by a sequence of two characters: “,a” (or “,a”), that is, the letter A preceded by a dot 6 (represented by a comma in North American ASCII Braille).
