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The character type Char is an enumeration and consists of 16 bit values, conforming to the Unicode standard. The lexical syntax for characters is defined in Section 2.6; character literals are nullary constructors in the datatype Char. Type Char is an instance of the classes Read, Show, Eq, Ord, Enum, and Bounded. The toEnum and fromEnum functions, standard functions over bounded enumerations, map characters onto Int values in the range [ 0 , 216-1 ].
Note that ASCII control characters each have several representations in character literals: numeric escapes, ASCII mnemonic
escapes, and the \^X notation. In addition, there are the following equivalences: \a and \BEL, \b and \BS, \f and \FF, \r
and \CR, \t and \HT, \v and \VT, and \n and \LF.
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