Braille pattern dots-13467

The numbers identify positions, not a spoken reading. A Braille cell is a small unit of raised dots that people read by touch. Viewed from the reading side, an eight-dot cell has positions 1, 2, 3, 7 down the left and 4, 5, 6, 8 down the right. In ⡭, positions 2, 5 and 8 are empty. “Eight-dot” describes the available positions, not the number of raised dots.

The traditional six-dot cell has three rows; eight-dot Braille adds a fourth row underneath. To translate ⡭ in Braille text, you need the code being used, which sets the rules for representing letters and other signs, as well as the surrounding text. Unicode preserves the dot pattern without assigning it a single reading.

Why does Braille use dots?

Compact dot patterns make writing readable by touch. Before Braille, Valentin Haüy published a book with raised printed letters in 1786. Louis Braille later developed a smaller six-dot system, drawing on Charles Barbier’s raised-dot “night writing.” It could represent letters, numbers and punctuation. Braille published his system in 1829; it was officially adopted in France in 1854. The eight-dot layout is a later extension.