本文详细介绍了各种转义字符的功能与用途，包括警铃、退格、换页、换行等，并解释了如何使用八进制及十六进制表示特定字符。
- alert (bell)
- backspace
- an escape character (not ANSI C)
- form feed
- newline
- carriage return
- horizontal tab
- vertical tab
- backslash
- single quote
- double quote
- the eight-bit character whose value is the octal value
nnn(one to three digits)
- the eight-bit character whose value is the hexadecimal value
HH(one or two hex digits)
- a control-x character
\a
\b
\e
\E
\f
\n
\r
\t
\v
\\
\'
\"
\nnn
\xHH
\cx
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