val code : char -> int

Return the ASCII code of the argument.

val chr: int -> char

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

val escaped : char -> string

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

val lowercase: char -> char
val uppercase: char -> char

Convert the given character to its equivalent lowercase or uppercase character, respectively.