## `char`: character operations

    value int_of_char : char -> int

  Return the ASCII code of the argument.

    value char_of_int : int -> char

  Return the character with the given ASCII code. Raise `Invalid_argument "char_of_int"` if the argument is outside the range 0--255.

    value string_of_char : char -> string

  Return a string representing the given character.

    value char_for_read : char -> string

  Return a string representing the given character, with special characters escaped following the lexical conventions of Caml Light.