The Wolfram Language supports full Unicode throughout—in strings, symbols, graphics, and external operations—allowing immediate streamlined use of all standard international character sets, integrated with native text entry.
FullForm — show characters with full names
CharacterEncoding — option for specific functions
$CharacterEncoding — resettable global Wolfram System default
$SystemCharacterEncoding — operating system default
$CharacterEncodings — list of installed character encodings
RemoveDiacritics — replace letters with analogs without diacritics