_Literal strings are delimited using doublequotes_
In awk, literal strings are delimited using [[doublequote?]] symbols:
A pair of consecutive [[doublequote?]] symbols can be used to represent an [[empty_string?]].
Backslash notation can be used to include special characters_
It is possible to include [[special_character?]]s in literal strings by using backslash symbol notation to represent escape sequences.