[Zz] backslash escape table in double cited strings -- Perl

Structure	Meaning
\ N	Line feed
\ R	Enter
\ T	Horizontal tabulation Operator
\ F	Page feed
\ B	Return
\ V	Vertical table feed
\	Ring tones
\ E	ESC
\ 007	Any octal ASCII value (here 007 indicates bell)
\ X7f	Any hexadecimal ASCII Value
\ CC	Any "control"Character
\\	Backslash
\"	Double quotation marks
\ L	Lower case letters
\ L	All subsequent letters in lower case until \ e
\ U	Uppercase letters
\ U	All subsequent letters in uppercase until \ e
\ E	End \ L and \ U