diff --git a/CMakeLists.txt b/CMakeLists.txt
index dda94e1..d350fa4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.23)
 project(YYCC
-    VERSION 1.2.0
+    VERSION 1.3.0
     LANGUAGES CXX
 )
 
diff --git a/src/YYCC/EnumHelper.hpp b/src/YYCC/EnumHelper.hpp
index 440dddc..043b13a 100644
--- a/src/YYCC/EnumHelper.hpp
+++ b/src/YYCC/EnumHelper.hpp
@@ -88,8 +88,13 @@ namespace YYCC::EnumHelper {
 	/**
 	 * @brief Merge given enum flags like performing <TT>e1 | e2 | ... | en</TT>
 	 * @tparam TEnum Enum type for processing.
-	 * @param[in] il The list of enum flags to be merged.
+	 * @param[in] val The first enum flag to be merged.
+	 * @param[in] val_left Left enum flags to be merged.
 	 * @return The merged enum flag.
+	 * @remarks
+	 * This function use recursive expansion to get final merge result.
+	 * So there is no difference of each arguments.
+	 * We independ first argument just served for expansion.
 	*/
 	template<typename TEnum, typename... Ts, std::enable_if_t<all_enum_values_v<TEnum, Ts...>, int> = 0>
 	constexpr TEnum Merge(TEnum val, Ts... val_left) {
@@ -114,7 +119,7 @@ namespace YYCC::EnumHelper {
 	}
 
 	/**
-	 * @brief Use specified enum flags to mask given enum flags like performing <TT>e1 &= e2</TT>
+	 * @brief Use specified enum flag to mask given enum flag like performing <TT>e1 &= e2</TT>
 	 * @tparam TEnum Enum type for processing.
 	 * @param[in,out] e1 The enum flags to be masked.
 	 * @param[in] e2 The mask enum flag.
@@ -126,10 +131,10 @@ namespace YYCC::EnumHelper {
 	}
 
 	/**
-	 * @brief Add specified enum flags to given enum flags like performing <TT>e1 = e1 | e2 | ... | en</TT>
+	 * @brief Add multiple enum flags to given enum flag like performing <TT>e1 |= (e2 | e3 | ... | en)</TT>
 	 * @tparam TEnum Enum type for processing.
-	 * @param[in,out] e1 The enum flags to be processed.
-	 * @param[in] e2 The enum flag to be added.
+	 * @param[in,out] e1 The enum flag which flags add on.
+	 * @param[in] vals The enum flag to be added.
 	*/
 	template<typename TEnum, typename... Ts, std::enable_if_t<all_enum_values_v<TEnum, Ts...>, int> = 0>
 	constexpr void Add(TEnum& e1, Ts... vals) {
@@ -138,10 +143,10 @@ namespace YYCC::EnumHelper {
 	}
 
 	/**
-	 * @brief Remove specified enum flags from given enum flags like performing <TT>e1 &= ~(e2 | e3 | ... | en)</TT>
+	 * @brief Remove multiple enum flags from given enum flag like performing <TT>e1 &= ~(e2 | e3 | ... | en)</TT>
 	 * @tparam TEnum Enum type for processing.
-	 * @param[in,out] e1 The enum flags to be processed.
-	 * @param[in] e2 The enum flag to be removed.
+	 * @param[in,out] e1 The enum flag which flags removed from.
+	 * @param[in] vals The enum flag to be removed.
 	*/
 	template<typename TEnum, typename... Ts, std::enable_if_t<all_enum_values_v<TEnum>, int> = 0>
 	constexpr void Remove(TEnum& e1, Ts... vals) {
@@ -150,23 +155,23 @@ namespace YYCC::EnumHelper {
 	}
 
 	/**
-	 * @brief Check whether given enum flags has specified enum flag like performing <TT>bool(e & probe)</TT>
+	 * @brief Check whether given enum flag has any of specified multiple enum flags (OR) like performing <TT>bool(e1 & (e2 | e3 | ... | en))</TT>
 	 * @tparam TEnum Enum type for processing.
-	 * @param[in] e1 The enum flags to be checked.
-	 * @param[in] e2 The enum flag for checking.
-	 * @return True if it has, otherwise false.
+	 * @param[in] e1 The enum flag where we check.
+	 * @param[in] vals The enum flags for checking.
+	 * @return True if it has any of given flags (OR), otherwise false.
 	*/
-	template<typename TEnum, std::enable_if_t<std::is_enum_v<TEnum>, int> = 0>
-	constexpr bool Has(TEnum e1, TEnum e2) {
+	template<typename TEnum, typename... Ts, std::enable_if_t<std::is_enum_v<TEnum>, int> = 0>
+	constexpr bool Has(TEnum e1, Ts... vals) {
 		using ut = std::underlying_type_t<TEnum>;
-		return static_cast<bool>(static_cast<ut>(e1) & static_cast<ut>(e2));
+		return static_cast<bool>(static_cast<ut>(e1) & static_cast<ut>(Merge(vals...)));
 	}
 	
 	/**
 	 * @brief Cast given enum flags to its equvalent boolean value like performing <TT>bool(e)</TT>
 	 * @tparam TEnum Enum type for processing.
 	 * @param e The enum flags to be cast.
-	 * @return The cast enum flag.
+	 * @return The equvalent bool value of given enum flag.
 	*/
 	template<typename TEnum, std::enable_if_t<std::is_enum_v<TEnum>, int> = 0>
 	constexpr bool Bool(TEnum e) {