Braille Pattern 1-2-3-4-5-8

It marks six dots; the code assigns their reading.

Codes vary by language and purpose: one cell can stand for a letter, punctuation, an abbreviation, or a short word. Screen fonts vary in dot size and spacing; Unicode sets no physical dimensions.

How did the eight-dot cell develop?

Braille grew from earlier touch-writing systems.

In 1821, Charles Barbier proposed a 12-dot code at the Paris school for blind students; Braille learned it there. The large cell was hard to feel all at once.

By 1824, Braille had a fingertip-sized six-dot cell; his 1829 book covered words and music. Later, eight-dot Braille added two positions. ⢟ uses dot 8.