*Beep Boop*
The numbers indicate how many black spaces including the space the number is on. So a 9 would just be a 3x3 block of black while a zero would be a 3x3 block of white.
The numbers indicate how many black spaces including the space the number is on. So a 9 would just be a 3x3 block of black while a zero would be a 3x3 block of white.