To show a space character as a visible symbol (as a better alternative than U+2420), it would be nice add the two additional characters that can represent an ASCII Space character:
U+2422 BLANK SYMBOL — "␢" a slashed b
U+2423 OPEN BOX — "␣" underline filling most of the width of the cell with small ascenders
To show a space character as a visible symbol (as a better alternative than U+2420), it would be nice add the two additional characters that can represent an ASCII Space character: