What is the ASCII code chart? Codes 0 to 31 are not used for characters They are called control characters because they are used for actions like: Carriage return (CR). Bell (BEL). Codes 65 to 90 ...

Each ASCII character in the JavaScript payload is converted into an 8-bit binary representation, and the binary values (ones and zeros) in it are replaced with invisible Hangul characters.

A control character in a document that represents movement to the next tab stop. In the ASCII character set, a horizontal tab is ASCII 9, and a vertical tab is ASCII 11. See ASCII chart.