UDN 링크 : https://docs.unrealengine.com/4.27/ko/ProgrammingAndScripting/ProgrammingWithCPP/UnrealArchitecture/StringHandling/문자열 사용에 있어서 초경량 시스템을
UDN 링크https://docs.unrealengine.com/4.27/ko/ProgrammingAndScripting/ProgrammingWithCPP/UnrealArchitecture/StringHandling/FString/FName, FText와 다르