Some string literal expressions require the use of escape sequences.
| Character | Escape Sequence |
|---|---|
| Horizontal Tab | \t |
| Vertical Tab | \v |
| Backspace | \b |
| Carriage Return | \r |
| Form Feed | \f |
| Alert | \a |
| Backslash | \\ |
| Question Mark | \? |
| Single Quotation Mark | \' |
| Double Quotation Mark | \" |
| Octal Number | \ooo [\o123] |
| Hexadecimal | \xhhh [\x1AF] |
| Null Character | \0 [zero] |