Braille

Braille is a medium which allows a non-sighted person to read text by touch, is also a method for writing tactile text. The braille code is physically presented as raised dots. usually arranged in cells of up to 6 dots. This is why braille writing devices have six main keys - each key controls a dot in the braille cell.

A	B	C	D	E	F	G	H	I	J
K	L	M	O	P	Q	R	S	T	U
V	W	X	Y	Z			capital	# sign	comma

The capital sign placed before a character makes it a captial letter.