Module braille 

Unicode Braille Patterns (U+2800..=U+28FF), addressed as a 2-column by 4-row dot grid.

Braille cells pack eight independently-settable dots into one glyph, giving roughly 2x the horizontal and 4x the vertical resolution of a plain block glyph for plotting points or thin lines. Each dot has a fixed bit in the 8-bit pattern index; combine the ones you want set with bitwise OR and pass the result to glyph().

(0,0) DOT_1  (1,0) DOT_4
(0,1) DOT_2  (1,1) DOT_5
(0,2) DOT_3  (1,2) DOT_6
(0,3) DOT_7  (1,3) DOT_8

Constants

BLANK

The empty braille cell (no dots set), ⠀ (U+2800, distinct from a plain space).

DOTS

The 2x4 dot-position table, indexed [row][col], giving the bit for each cell in the braille dot grid.

DOT_1

Dot at column 0, row 0.

DOT_2

Dot at column 0, row 1.

DOT_3

Dot at column 0, row 2.

DOT_4

Dot at column 1, row 0.

DOT_5

Dot at column 1, row 1.

DOT_6

Dot at column 1, row 2.

DOT_7

Dot at column 0, row 3.

DOT_8

Dot at column 1, row 3.

Functions

glyph

The glyph for pattern, a bitmask of the eight DOT_* constants (or values from DOTS) OR’d together.