What is Braille?
Braille is a special letter intended for people with weak appearance or blindness.
Blind with touch, apple on the right index finger, read from left to right and write from right to left. The bone of the finger can feel the whole cell, one letter at a time.
Braille for the blind was created in 1825. It comes from a nightletter from the Secret Service they used in a night war. Louis Braille perfected this technique and tried to apply it in practice. The base cell of the braille letter consists of six points and each letter corresponds to a certain combination of those relief points.
Braille is not uniform, i.e. coding is not one-on-one. This means that a sign of Braille can be interpreted in many ways. The true meaning of each character in the braille text depends on the context in which the character is located.