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A backslash occurring inside integers in ‘0'’ notation or inside quoted atoms or strings has special meaning, and indicates the start of an escape sequence. The following escape sequences exist:
\a ISO
alarm (character code 7)
\b ISO
backspace (character code 8)
\t ISO
horizontal tab (character code 9)
\n ISO
newline (character code 10)
\v ISO
vertical tab (character code 11)
\f ISO
form feed (character code 12)
\r ISO
carriage return (character code 13)
\e
escape (character code 27)
\d
delete (character code 127)
\xhex-digit…\ ISO
the character code represented by the hexadecimal digits
\octal-digit…\ ISO
the character code represented by the octal digits.
\LFD ISO
A backslash followed by a single newline character is ignored. The purpose of this is to allow a string or quoted-name to be spread over multiple lines.
\\, \', \", \` ISO
Stand for the character following the ‘\’.