arranged arrangement as-figure-six-on-a-die basic blind braille-alphabet braille-character-set braille-codes braille-dots braille-font braille-punctuation cell characters chart configurations enabling French-teacher grid internationally-standardised letter-substitution Louis-Braille partially-sighted patterned patterns positioned positions raised-dots sightless six-dots tactile textured textures three-dimensional-tactile-bumps touch two-parallel-vertical-lines-of-three-dots Unicode vertical vision-impaired writing-system abstract appearance background cloth colorful colors colourful colours crease creases dark Designs fabrics fashion feel flowers folds materials pink red soft textiles fine mesh purple color coloration colour creased decorative draped drapery layered layers light shadows surface surfaced surfaces surfacing thin blue bolts partial rolls rolls toweling tubes plastic plastic-sheeting plastics thick circles circular heavy stitching upholstery Asian embroidered imagery imaginative orange script symbols tibetan