Braille dots 4-5-7

The dots name a pattern; a Braille code gives it a reading. Braille is read by touch using raised dots. This cell has raised positions 4, 5 and 7. Dot 7 extends below the six-dot layout, making ⡘ an eight-dot pattern. Language and notation codes assign its reading; Unicode stores patterns, not their meanings.

At a Paris school for blind students, Barbier's 12-dot method was tried in 1821; he had proposed raised-dot writing for blind or partially sighted readers in 1815. Louis Braille studied there and published his six-dot method in 1829. A 2021 archival study dates their first meeting to 1833 and questions the story that Barbier designed his method as night writing for soldiers.