'no interpolation'
"#{interpolation}, and backslashes\n"
%q(no interpolation)
%Q(interpolation and backslashes)
%(interpolation and backslashes)
`echo command interpretation with interpolation and backslashes`
%x(echo command interpretation with interpolation and backslashes)

# Backslashes
\t (tab), \n (newline), \r (carriage return), \f (form feed),
\b (backspace), \a (bell), \e (escape), \s (whitespace), \nnn (octal),
\xnn (hexadecimal), \cx (control x), \C-x (control x), \M-x (meta x),
\M-\C-x (meta control x)

# Here Docs
<<identifier   - interpolated, goes until identifier
<<"identifier" - same thing
<<'identifier' - no interpolation
<<-identifier  - you can indent the identifier by using "-" in front

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