ANSI-C Quoting

\a
alert (bell)
\b
backspace
\e
\E
an escape character (not ANSI C)
\f
form feed
\n
newline
\r
carriage return
\t
horizontal tab
\v
vertical tab
\\
backslash
\'
single quote
\"
double quote
\nnn
the eight-bit character whose value is the octal value nnn(one to three digits)
\xHH
the eight-bit character whose value is the hexadecimal value HH(one or two hex digits)
\cx
a control-x character 

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