Definitions for "Null character"
Keywords:  hex, ascii, mdash, unpunched, nop
The ASCII or EBCDIC character with the hex value 00 (all bits turned off). It is used to represent the absence of a printed or displayed character. This character is named NUL in the portable character set.
An unprintable character that occupies an unused position in a font.
A null character is a character with all its bits set to zero. Therefore, it ...