In hexadecimal, this is 7F to rub out 7 bits (FF to rubout 8 bits was used for 8-bit codes). This character could also be used as padding to slow down printing after newlines, though the all-zero NUL was more often used.
In hexadecimal, this signifies 7F to discard 7 bits (FF is employed to erase 8 bits in 8-bit systems). This character might be utilized for padding to decrease printing speed after newlines, though the all-zero NUL was typically preferred.