diff --git a/LibCmo/CK2/CKContext.hpp b/LibCmo/CK2/CKContext.hpp
index eacb3bd..8d8ee19 100644
--- a/LibCmo/CK2/CKContext.hpp
+++ b/LibCmo/CK2/CKContext.hpp
@@ -153,7 +153,7 @@ namespace LibCmo::CK2 {
 		 * @details It accept a CKSTRING representing the string need to be printed.
 		 * The passed CKSTRING is guaranteen that it can not be nullptr.
 		*/
-		using OutputCallback = void(*)(CKSTRING);
+		using OutputCallback = std::function<void(CKSTRING)>;
 		/**
 		 * @brief Output plain message.
 		 * @param[in] str Plain message. nullptr is allowed but not suggested.
diff --git a/LibCmo/VTEncoding.cpp b/LibCmo/VTEncoding.cpp
index e10878d..924b296 100644
--- a/LibCmo/VTEncoding.cpp
+++ b/LibCmo/VTEncoding.cpp
@@ -403,6 +403,9 @@ namespace LibCmo::EncodingHelper {
 #if YYCC_OS == YYCC_OS_WINDOWS
 
 	struct WindowsEncodingToken {
+		WindowsEncodingToken(const std::u8string_view& universal_code, UINT cp) :
+			m_Name(universal_code), m_CodePage(cp) {}
+		std::u8string m_Name;
 		UINT m_CodePage;
 	};
 
@@ -412,7 +415,8 @@ namespace LibCmo::EncodingHelper {
 	static const iconv_t c_InvalidIconvType = reinterpret_cast<iconv_t>(-1);
 
 	struct IconvEncodingToken {
-		IconvEncodingToken(const std::string_view& iconv_code) :
+		IconvEncodingToken(const std::u8string_view& universal_code, const std::string_view& iconv_code) :
+			m_Name(universal_code),
 			m_FromUTF8(c_InvalidIconvType), m_ToUTF8(c_InvalidIconvType) {
 			// if iconv code is empty, do nothing
 			if (iconv_code.empty()) return;
@@ -426,6 +430,8 @@ namespace LibCmo::EncodingHelper {
 			if (this->m_ToUTF8 != c_InvalidIconvType)
 				iconv_close(token_cast->m_ToUTF8);
 		}
+
+		std::u8string m_Name;
 		iconv_t m_FromUTF8;
 		iconv_t m_ToUTF8;
 	};
@@ -508,7 +514,7 @@ namespace LibCmo::EncodingHelper {
 		if (!YYCC::WinFctHelper::IsValidCodePage(cp))
 			return INVALID_ENCODING_TOKEN;
 		// create token and return
-		WindowsEncodingToken* token = new WindowsEncodingToken { cp };
+		WindowsEncodingToken* token = new WindowsEncodingToken(enc_name, cp);
 		return token;
 #else
 		// get iconv code first
@@ -516,7 +522,7 @@ namespace LibCmo::EncodingHelper {
 		if (!GetIconvCode(enc_name, code))
 			return INVALID_ENCODING_TOKEN;
 		// create token and set default value
-		IconvEncodingToken* token = new IconvEncodingToken(code);
+		IconvEncodingToken* token = new IconvEncodingToken(enc_name, code);
 		// check whether token has been initialized correctly
 		if (token->m_FromUTF8 == c_InvalidIconvType || token->m_ToUTF8 == c_InvalidIconvType) {
 			// failed. free resource and return
@@ -541,6 +547,34 @@ namespace LibCmo::EncodingHelper {
 #endif
 	}
 
+	std::u8string GetEncodingTokenAssociatedName(EncodingToken token) {
+		// prepare return value
+		std::u8string ret;
+		// if token is invalid, return directly
+		if (token == INVALID_ENCODING_TOKEN) return ret;
+
+		// get associated name
+#if YYCC_OS == YYCC_OS_WINDOWS
+		WindowsEncodingToken* token_cast = static_cast<WindowsEncodingToken*>(token);
+		ret = token_cast->m_Name;
+#else
+		IconvEncodingToken* token_cast = static_cast<IconvEncodingToken*>(token);
+		ret = token_cast->m_Name;
+#endif
+		// return value
+		return ret;
+	}
+
+	bool IsValidEncodingName(const std::u8string_view& enc_name) {
+#if YYCC_OS == YYCC_OS_WINDOWS
+		UINT cp = CP_ACP;
+		return GetWindowsCodePage(enc_name, cp);
+#else
+		std::string code;
+		return GetIconvCode(enc_name, code);
+#endif
+	}
+
 #pragma endregion
 
 #pragma region Exposed Convertion Functions
diff --git a/LibCmo/VTEncoding.hpp b/LibCmo/VTEncoding.hpp
index fbd47b2..841e64c 100644
--- a/LibCmo/VTEncoding.hpp
+++ b/LibCmo/VTEncoding.hpp
@@ -55,6 +55,23 @@ namespace LibCmo::EncodingHelper {
 	 * If token is #INVALID_ENCODING_TOKEN, this function does nothing.
 	*/
 	void DestroyEncodingToken(EncodingToken token);
+	/**
+	 * @brief Get associated universal encoding name of given encoding token.
+	 * @param[in] token The encoding token for getting name.
+	 * @return Encoding token associated name (the universal encoding name used to create this token).
+	 * Blank if given token is invalid or fail to get.
+	*/
+	std::u8string GetEncodingTokenAssociatedName(EncodingToken token);
+	/**
+	 * @brief Check whether given universal encoding name can be used to produce token.
+	 * @param[in] enc_name Universal encoding name.
+	 * @return True if it is, otherwise false.
+	 * @remarks
+	 * Please note this function only check whether given encoding name is acceptable by token creator.
+	 * Hoewver it doesn't mean that the token must be created if this function return true.
+	 * Because there are some runtime issues which can cause that fail to create encoding token.
+	*/
+	bool IsValidEncodingName(const std::u8string_view& enc_name);
 
 	/**
 	 * @brief Convert native string to UTF8 string by given encoding.
diff --git a/Unvirt/CmdHelper.cpp b/Unvirt/CmdHelper.cpp
index 36cb47b..8b6e54c 100644
--- a/Unvirt/CmdHelper.cpp
+++ b/Unvirt/CmdHelper.cpp
@@ -1,4 +1,5 @@
 #include "CmdHelper.hpp"
+#include <VTAll.hpp>
 #include <algorithm>
 
 namespace Unvirt::CmdHelper {
@@ -11,7 +12,7 @@ namespace Unvirt::CmdHelper {
 		return m_Result;
 	}
 
-	bool CmdSplitter::Convert(const std::u8string& u8cmd) {
+	bool CmdSplitter::Lex(const std::u8string& u8cmd) {
 		// Clear variables
 		m_ValidResult = false;
 		m_Result.clear();
@@ -537,7 +538,12 @@ if (!this->IsRootNode()) { \
 		bool EncodingListArgument::BeginConsume(const std::u8string& cur_cmd, ArgumentsMap& am) {
 			// split given argument
 			std::vector<std::u8string> encs = YYCC::StringHelper::Split(cur_cmd, u8",");
-			// add into map
+			// check each parts is a valid encoding name
+			for (const auto& item : encs) {
+				if (!LibCmo::EncodingHelper::IsValidEncodingName(item))
+					return false;
+			}
+			// okey, add into map
 			am.Add<ArgValue_t>(m_ArgumentName, encs);
 			return true;
 		}
diff --git a/Unvirt/CmdHelper.hpp b/Unvirt/CmdHelper.hpp
index 1bd6fe0..d9f211d 100644
--- a/Unvirt/CmdHelper.hpp
+++ b/Unvirt/CmdHelper.hpp
@@ -31,9 +31,9 @@ namespace Unvirt::CmdHelper {
 			m_CurrentChar(u8'\0'), m_Buffer(), m_Result(), m_ValidResult(false),
 			m_State(StateType::NORMAL), m_PrevState(StateType::NORMAL) {}
 		~CmdSplitter() {}
-		YYCC_DEL_CLS_COPY_MOVE(CmdSplitter);
+		YYCC_DEF_CLS_COPY_MOVE(CmdSplitter);
 
-		bool Convert(const std::u8string& u8cmd);
+		bool Lex(const std::u8string& u8cmd);
 		const Result_t& GetResult() const;
 
 	private:
@@ -241,7 +241,7 @@ namespace Unvirt::CmdHelper {
 
 		class AbstractNode {
 		public:
-			using FctExecution_t = void(*)(const ArgumentsMap&);
+			using FctExecution_t = std::function<void(const ArgumentsMap&)>;
 
 		public:
 			AbstractNode();
diff --git a/Unvirt/StructFormatter.cpp b/Unvirt/StructFormatter.cpp
index 1db3186..ff96a1d 100644
--- a/Unvirt/StructFormatter.cpp
+++ b/Unvirt/StructFormatter.cpp
@@ -2,7 +2,6 @@
 
 #include <YYCCommonplace.hpp>
 #include "AccessibleValue.hpp"
-#include "TerminalHelper.hpp"
 
 namespace Console = YYCC::ConsoleHelper;
 
diff --git a/Unvirt/UnvirtContext.cpp b/Unvirt/UnvirtContext.cpp
index b46f6ea..2fbfbac 100644
--- a/Unvirt/UnvirtContext.cpp
+++ b/Unvirt/UnvirtContext.cpp
@@ -1,193 +1,208 @@
 #include "UnvirtContext.hpp"
+
+#include <YYCCommonplace.hpp>
 #include <CK2/MgrImpls/CKPathManager.hpp>
 #include <cstdarg>
 #include <regex>
 
 namespace Unvirt::Context {
 
+#pragma region Constraint Help Function
+
+	static YYCC::Constraints::Constraint<size_t> GetOneBasedIndexConstraint() {
+		return YYCC::Constraints::Constraint<size_t> {
+			[](const size_t& val) -> bool {
+				return val > 0u;
+			}
+		};
+	}
+
+#pragma endregion
+
+
 #pragma region UnvirtContext Misc
 
 	UnvirtContext::UnvirtContext() :
-		m_Root(), m_Splitter(), m_Help(nullptr),
+		m_Splitter(), m_Parser(), m_Help(),
 		m_PageLen(10u), m_ListStyleIsFull(true), m_OrderExit(false),
 		m_SearchPart(SearchPart::None), m_SearchIdxResult(),
 		m_Ctx(nullptr), m_FileReader(nullptr), m_IsShallowRead(true) {
 
-		// create command root
-		CmdHelper::CommandRoot* root = &m_Root;
-
+		// Setup command parser
+		// get root node first
+		CmdHelper::Nodes::RootNode& root = m_Parser.GetRoot();
+		// setup tree
 		root
-		->Then((new CmdHelper::Literal("load"))
-			->Then((new CmdHelper::Choice("stage", { "deep", "shallow"}))
-				->Comment("The stage of loading. 'deep' will load to CKObject stage. 'shallow' will load to CKStateChunk stage.")
-				->Then((new CmdHelper::StringArgument("filepath"))
-					->Comment("The path to loading file.")
-					->Executes(
+		.Then<CmdHelper::Nodes::Literal>(CmdHelper::Nodes::Literal(u8"load")
+			.Then<CmdHelper::Nodes::Choice>(CmdHelper::Nodes::Choice(u8"stage", { u8"deep", u8"shallow"})
+				.Comment(u8"The stage of loading. 'deep' will load to CKObject stage. 'shallow' will load to CKStateChunk stage.")
+				.Then<CmdHelper::Nodes::StringArgument>(CmdHelper::Nodes::StringArgument(u8"filepath")
+					.Comment(u8"The path to loading file.")
+					.Executes(
 						std::bind(&UnvirtContext::ProcLoad, this, std::placeholders::_1),
-						"Load a Virtools composition."
+						u8"Load a Virtools composition."
 					)
 				)
 			)
 		)
-		->Then((new CmdHelper::Literal("unload"))
-			->Executes(
+		.Then<CmdHelper::Nodes::Literal>(CmdHelper::Nodes::Literal(u8"unload")
+			.Executes(
 				std::bind(&UnvirtContext::ProcUnLoad, this, std::placeholders::_1),
-				"Release loaded Virtools composition."
+				u8"Release loaded Virtools composition."
 			)
 		)
-		->Then((new CmdHelper::Literal("save"))
-			->Then((new CmdHelper::StringArgument("filepath"))
-				->Comment("The path to save file.")
-				->Executes(
+		.Then<CmdHelper::Nodes::Literal>(CmdHelper::Nodes::Literal(u8"save")
+			.Then<CmdHelper::Nodes::StringArgument>(CmdHelper::Nodes::StringArgument(u8"filepath")
+				.Comment(u8"The path to save file.")
+				.Executes(
 					std::bind(&UnvirtContext::ProcSave, this, std::placeholders::_1),
-					"Save the loaded file into a new file."
+					u8"Save the loaded file into a new file."
 				)
 			)
 		)
-		->Then((new CmdHelper::Literal("info"))
-			->Executes(
+		.Then<CmdHelper::Nodes::Literal>(CmdHelper::Nodes::Literal(u8"info")
+			.Executes(
 				std::bind(&UnvirtContext::ProcInfo, this, std::placeholders::_1),
-				"Show the header info of loaded Virtools composition."
+				u8"Show the header info of loaded Virtools composition."
 			)
 		)
-		->Then((new CmdHelper::Literal("ls"))
-			->Then((new CmdHelper::Choice("part", { "obj", "mgr", "search"}))
-				->Comment("Which list you want to list.")
-				->Then((new CmdHelper::IntArgument("page", [](int32_t v) -> bool { return v > 0; }))
-					->Comment("The page index. Start with 1.")
-					->Executes(
+		.Then<CmdHelper::Nodes::Literal>(CmdHelper::Nodes::Literal(u8"ls")
+			.Then<CmdHelper::Nodes::Choice>(CmdHelper::Nodes::Choice(u8"part", { u8"obj", u8"mgr", u8"search"})
+				.Comment(u8"Which list you want to list.")
+				.Then<CmdHelper::Nodes::ArithmeticArgument<size_t>>(CmdHelper::Nodes::ArithmeticArgument<size_t>(u8"page", GetOneBasedIndexConstraint())
+					.Comment(u8"The page index. Start with 1.")
+					.Executes(
 						std::bind(&UnvirtContext::ProcLs, this, std::placeholders::_1),
-						"List something about loaded Virtools composition."
+						u8"List something about loaded Virtools composition."
 					)
 				)
 			)
 		)
-		->Then((new CmdHelper::Literal("data"))
-			->Then((new CmdHelper::Choice("part", { "obj", "mgr"}))
-				->Comment("Which list you want to show data.")
-				->Then((new CmdHelper::IntArgument("index", [](int32_t v) -> bool { return v >= 0; }))
-					->Comment("The index. Start with 0.")
-					->Executes(
+		.Then<CmdHelper::Nodes::Literal>(CmdHelper::Nodes::Literal(u8"data")
+			.Then<CmdHelper::Nodes::Choice>(CmdHelper::Nodes::Choice(u8"part", { u8"obj", u8"mgr"})
+				.Comment(u8"Which list you want to show data.")
+				.Then<CmdHelper::Nodes::ArithmeticArgument<size_t>>(CmdHelper::Nodes::ArithmeticArgument<size_t>(u8"index")
+					.Comment(u8"The index. Start with 0.")
+					.Executes(
 						std::bind(&UnvirtContext::ProcData, this, std::placeholders::_1),
-						"Show the specific CKObject / CKBaseManager data."
+						u8"Show the specific CKObject / CKBaseManager data."
 					)
 				)
 			)
 		)
-		->Then((new CmdHelper::Literal("chunk"))
-			->Then((new CmdHelper::Choice("part", { "obj", "mgr"}))
-				->Comment("Which list you want to show chunk.")
-				->Then((new CmdHelper::IntArgument("index", [](int32_t v) -> bool { return v >= 0; }))
-					->Comment("The index. Start with 0.")
-					->Executes(
+		.Then<CmdHelper::Nodes::Literal>(CmdHelper::Nodes::Literal(u8"chunk")
+			.Then<CmdHelper::Nodes::Choice>(CmdHelper::Nodes::Choice(u8"part", { u8"obj", u8"mgr"})
+				.Comment(u8"Which list you want to show chunk.")
+				.Then<CmdHelper::Nodes::ArithmeticArgument<size_t>>(CmdHelper::Nodes::ArithmeticArgument<size_t>(u8"index")
+					.Comment(u8"The index. Start with 0.")
+					.Executes(
 						std::bind(&UnvirtContext::ProcChunk, this, std::placeholders::_1),
-						"Show the specific CKStateChunk data."
+						u8"Show the specific CKStateChunk data."
 					)
 				)
 			)
 		)
-		->Then((new CmdHelper::Literal("search"))
-			->Then((new CmdHelper::Choice("part", { "obj", "mgr"}))
-				->Comment("Which list you want to search.")
-				->Then((new CmdHelper::Choice("mode", { "plain", "re"}))
-					->Comment("The search mode. `plain` will search by substring and `re` will do regex search.")
-					->Then((new CmdHelper::StringArgument("text"))
-						->Comment("The text or regex to search.")
-						->Executes(
+		.Then<CmdHelper::Nodes::Literal>(CmdHelper::Nodes::Literal(u8"search")
+			.Then<CmdHelper::Nodes::Choice>(CmdHelper::Nodes::Choice(u8"part", { u8"obj", u8"mgr"})
+				.Comment(u8"Which list you want to search.")
+				.Then<CmdHelper::Nodes::Choice>(CmdHelper::Nodes::Choice(u8"mode", { u8"plain", u8"re"})
+					.Comment(u8"The search mode. `plain` will search by substring and `re` will do regex search.")
+					.Then<CmdHelper::Nodes::StringArgument>(CmdHelper::Nodes::StringArgument(u8"text")
+						.Comment(u8"The text or regex to search.")
+						.Executes(
 							std::bind(&UnvirtContext::ProcSearch, this, std::placeholders::_1),
-							"Search object or manager by text or regex. Please note that the regex have limited UTF8 support and may cause undefined behavior."
+							u8"Search object or manager by text or regex. Please note that the regex have limited UTF8 support and may cause undefined behavior."
 						)
 					)
 				)
 			)
 		)
-		->Then((new CmdHelper::Literal("items"))
-			->Then((new CmdHelper::IntArgument("count", [](int32_t v) -> bool { return v > 0; }))
-				->Comment("The count of items you want to show in one page.")
-				->Executes(
+		.Then<CmdHelper::Nodes::Literal>(CmdHelper::Nodes::Literal(u8"items")
+			.Then<CmdHelper::Nodes::ArithmeticArgument<size_t>>(CmdHelper::Nodes::ArithmeticArgument<size_t>(u8"count", GetOneBasedIndexConstraint())
+				.Comment(u8"The count of items you want to show in one page.")
+				.Executes(
 					std::bind(&UnvirtContext::ProcItems, this, std::placeholders::_1),
-					"Set up how many items should be listed in one page when using 'ls' command."
+					u8"Set up how many items should be listed in one page when using 'ls' command."
 				)
 			)
 		)
-		->Then((new CmdHelper::Literal("style"))
-			->Then((new CmdHelper::Choice("level", { "full", "simple"}))
-				->Comment("The amount of showen content.")
-				->Executes(
+		.Then<CmdHelper::Nodes::Literal>(CmdHelper::Nodes::Literal(u8"style")
+			.Then<CmdHelper::Nodes::Choice>(CmdHelper::Nodes::Choice(u8"level", { u8"full", u8"simple"})
+				.Comment(u8"The amount of showen content.")
+				.Executes(
 					std::bind(&UnvirtContext::ProcStyle, this, std::placeholders::_1),
-					"Change the detail level of showen data in `ls` command."
+					u8"Change the detail level of showen data in `ls` command."
 				)
 			)
 		)
-		->Then((new CmdHelper::Literal("encoding"))
-			->Then((new CmdHelper::EncodingArgument("enc"))
-				->Comment("CKContext used encoding splitted by ','. Support mutiple encoding.")
-				->Executes(
+		.Then<CmdHelper::Nodes::Literal>(CmdHelper::Nodes::Literal(u8"encoding")
+			.Then<CmdHelper::Nodes::EncodingListArgument>(CmdHelper::Nodes::EncodingListArgument(u8"enc")
+				.Comment(u8"CKContext used encoding splitted by ','. Support mutiple encoding.")
+				.Executes(
 					std::bind(&UnvirtContext::ProcEncoding, this, std::placeholders::_1),
-					"Set the encoding series for CKContext."
+					u8"Set the encoding series for CKContext."
 				)
 			)
 		)
-		->Then((new CmdHelper::Literal("temp"))
-			->Then((new CmdHelper::StringArgument("temppath"))
-				->Comment("The path to Temp folder.")
-				->Executes(
+		.Then<CmdHelper::Nodes::Literal>(CmdHelper::Nodes::Literal(u8"temp")
+			.Then<CmdHelper::Nodes::StringArgument>(CmdHelper::Nodes::StringArgument(u8"temppath")
+				.Comment(u8"The path to Temp folder.")
+				.Executes(
 					std::bind(&UnvirtContext::ProcTemp, this, std::placeholders::_1),
-					"Set the Temp path for CKContext."
+					u8"Set the Temp path for CKContext."
 				)
 			)
 		)
-		->Then((new CmdHelper::Literal("rsc"))
-			->Then((new CmdHelper::Literal("clear"))
-				->Executes(
+		.Then<CmdHelper::Nodes::Literal>(CmdHelper::Nodes::Literal(u8"rsc")
+			.Then<CmdHelper::Nodes::Literal>(CmdHelper::Nodes::Literal(u8"clear")
+				.Executes(
 					std::bind(&UnvirtContext::ProcRsc, this, std::placeholders::_1, true),
-					"Clear all data resources paths."
+					u8"Clear all data resources paths."
 				)
 			)
-			->Then((new CmdHelper::Literal("add"))
-				->Then((new CmdHelper::StringArgument("datares"))
-					->Comment("The data resources path .")
-					->Executes(
+			.Then<CmdHelper::Nodes::Literal>(CmdHelper::Nodes::Literal(u8"add")
+				.Then<CmdHelper::Nodes::StringArgument>(CmdHelper::Nodes::StringArgument(u8"datares")
+					.Comment(u8"The data resources path .")
+					.Executes(
 						std::bind(&UnvirtContext::ProcRsc, this, std::placeholders::_1, false),
-						"Add a path to let Virtools find resources."
+						u8"Add a path to let Virtools find resources."
 					)
 				)
 			)
 		)
-		->Then((new CmdHelper::Literal("test"))
-			->Executes(
+		.Then<CmdHelper::Nodes::Literal>(CmdHelper::Nodes::Literal(u8"test")
+			.Executes(
 				std::bind(&UnvirtContext::ProcTest, this, std::placeholders::_1),
-				"Call custom debugging function (only available in Debug mode)."
+				u8"Call custom debugging function (only available in Debug mode)."
 			)
 		)
-		->Then((new CmdHelper::Literal("help"))
-			->Executes(
+		.Then<CmdHelper::Nodes::Literal>(CmdHelper::Nodes::Literal(u8"help")
+			.Executes(
 				std::bind(&UnvirtContext::ProcHelp, this, std::placeholders::_1),
-				"Output this help page."
+				u8"Output this help page."
 			)
 		)
-		->Then((new CmdHelper::Literal("exit"))
-			->Executes(
+		.Then<CmdHelper::Nodes::Literal>(CmdHelper::Nodes::Literal(u8"exit")
+			.Executes(
 				std::bind(&UnvirtContext::ProcExit, this, std::placeholders::_1),
-				"Exit program."
+				u8"Exit program."
 			)
 		);
 
-		// create help
-		m_Help = root->RootHelp();
+		// create help document
+		m_Help = m_Parser.Help();
 
-		// create context
-		LibCmo::CK2::CKStartUp();
+		// initialize CK engine and create context
+		LibCmo::CK2::CKERROR err = LibCmo::CK2::CKStartUp();
+		if (err != LibCmo::CK2::CKERROR::CKERR_OK)
+			throw std::runtime_error("fail to initialize CK2 engine.");
 		m_Ctx = new LibCmo::CK2::CKContext();
 		m_Ctx->SetOutputCallback(std::bind(&UnvirtContext::PrintContextMsg, this, std::placeholders::_1));
 		m_Ctx->SetGlobalImagesSaveOptions(LibCmo::CK2::CK_TEXTURE_SAVEOPTIONS::CKTEXTURE_EXTERNAL);
 	}
 
 	UnvirtContext::~UnvirtContext() {
-		if (m_Help != nullptr)
-			delete m_Help;
-
-		// free context
+		// free context and shutdown CK engine.
 		ClearDocument();
 		delete m_Ctx;
 		LibCmo::CK2::CKShutdown();
@@ -212,26 +227,26 @@ namespace Unvirt::Context {
 
 	void UnvirtContext::PrintContextMsg(LibCmo::CKSTRING msg) {
 		if (msg != nullptr) {
-			fprintf(stdout, UNVIRT_TERMCOL_LIGHT_YELLOW(("[CKContext] ")) "%s\n", msg);
+			YYCC::ConsoleHelper::FormatLine(YYCC_COLOR_LIGHT_YELLOW(u8"[CKContext] ") "%s", msg);
 		}
 	}
-	
-	void UnvirtContext::PrintCommonInfo(const char* u8_fmt, ...) {
+
+	void UnvirtContext::PrintCommonInfo(const char8_t* u8_fmt, ...) {
 		va_list argptr;
 		va_start(argptr, u8_fmt);
-		std::vfprintf(stdout, u8_fmt, argptr);
+		YYCC::ConsoleHelper::WriteLine(
+			YYCC::StringHelper::VPrintf(u8_fmt, argptr).c_str()
+		);
 		va_end(argptr);
-		std::fputc('\n', stdout);
 	}
 
-	void UnvirtContext::PrintCommonError(const char* u8_fmt, ...) {
+	void UnvirtContext::PrintCommonError(const char8_t* u8_fmt, ...) {
 		va_list argptr;
 		va_start(argptr, u8_fmt);
-		std::fputs(UNVIRT_TERMCOLHDR_LIGHT_RED, stdout);
-		std::vfprintf(stdout, u8_fmt, argptr);
-		std::fputs(UNVIRT_TERMCOLTAIL, stdout);
+		YYCC::ConsoleHelper::FormatLine(YYCC_COLOR_LIGHT_RED(u8"%s"),
+			YYCC::StringHelper::VPrintf(u8_fmt, argptr).c_str()
+		);
 		va_end(argptr);
-		std::fputc('\n', stdout);
 	}
 
 #pragma endregion
@@ -239,23 +254,34 @@ namespace Unvirt::Context {
 #pragma region Main Run
 
 	void UnvirtContext::Run() {
-		Unvirt::TerminalHelper::EnsureTerminalColor();
-		Unvirt::TerminalHelper::EnsureTerminalEncoding();
-		std::string u8cmd;
+		// Enable terminal color feature
+		YYCC::ConsoleHelper::EnableColorfulConsole();
 
+		// Show banner
+		YYCC::ConsoleHelper::WriteLine(YYCC_COLOR_LIGHT_YELLOW(u8"Unvirt"));
+		YYCC::ConsoleHelper::WriteLine(YYCC_COLOR_LIGHT_YELLOW(u8"Type 'help' for more infomation. Type 'exit' to quit."));
+
+		// start process loop
 		while (true) {
 			// get command
-			TerminalHelper::GetCmdLine(u8cmd);
+			YYCC::ConsoleHelper::Write(YYCC_COLOR_GREEN(u8"> "));
+			std::u8string u8cmd = YYCC::ConsoleHelper::ReadLine();
 
-			// split cmd and parse it
-			auto cmds = m_Splitter.Convert(u8cmd);
+			// lex command line first
+			if (!m_Splitter.Lex(u8cmd)) {
+				this->PrintCommonError(u8"Lexer error \"%s\".\nType 'help' for usage.", u8cmd.c_str());
+				continue;
+			}
+			// if result is empty, skip to next one
+			auto cmds = m_Splitter.GetResult();
 			if (cmds.empty()) continue;
 
-			// get sub command
-			if (!m_Root.RootConsume(cmds)) {
-				this->PrintCommonError("Syntax error \"%s\".\nType 'help' for usage.", u8cmd.c_str());
+			// run command parser
+			if (!m_Parser.Parse(cmds)) {
+				this->PrintCommonError(u8"Parser error \"%s\".\nType 'help' for usage.", u8cmd.c_str());
 			}
 
+			// check whether sub processor need exit.
 			if (m_OrderExit) {
 				break;
 			}
@@ -266,15 +292,20 @@ namespace Unvirt::Context {
 
 #pragma region Proc Detail
 
-	void UnvirtContext::ProcLoad(const CmdHelper::ArgumentsMap* amap) {
+	void UnvirtContext::ProcLoad(const CmdHelper::ArgumentsMap& amap) {
 		// check pre-requirement
 		if (HasOpenedFile()) {
-			PrintCommonError("Already have a opened file. Close it before calling 'load'.");
+			PrintCommonError(u8"Already have a opened file. Close it before calling 'load'.");
+			return;
+		}
+		if (!m_Ctx->IsValidEncoding()) {
+			PrintCommonError(u8"You have not set encoding properly. Set it before loading by calling 'encoding'.");
 			return;
 		}
 
-		std::string filepath = *amap->Get<CmdHelper::StringArgument::vType>("filepath");
-		bool is_deep = *amap->Get<CmdHelper::Choice::vType>("stage") == 0;
+		// get argument
+		std::u8string filepath = amap.Get<CmdHelper::Nodes::StringArgument::ArgValue_t>(u8"filepath").Get();
+		bool is_deep = amap.Get<CmdHelper::Nodes::Choice::ArgValue_t>(u8"stage").Get() == 0u;
 
 		// proc
 		m_FileReader = new LibCmo::CK2::CKFileReader(m_Ctx);
@@ -288,7 +319,7 @@ namespace Unvirt::Context {
 		}
 		if (err != LibCmo::CK2::CKERROR::CKERR_OK) {
 			// fail to load. release all.
-			PrintCommonError("Fail to load file. Function return: %s\n\t%s",
+			PrintCommonError(u8"Fail to load file. Function return: %s\n\t%s",
 				Unvirt::AccessibleValue::GetCkErrorName(err).c_str(),
 				Unvirt::AccessibleValue::GetCkErrorDescription(err).c_str()
 			);
@@ -297,10 +328,10 @@ namespace Unvirt::Context {
 		}
 	}
 
-	void UnvirtContext::ProcUnLoad(const CmdHelper::ArgumentsMap*) {
+	void UnvirtContext::ProcUnLoad(const CmdHelper::ArgumentsMap&) {
 		// check pre-requirement
 		if (!HasOpenedFile()) {
-			this->PrintCommonError("No loaded file.");
+			this->PrintCommonError(u8"No loaded file.");
 			return;
 		}
 
@@ -308,14 +339,18 @@ namespace Unvirt::Context {
 		ClearDocument();
 	}
 
-	void Unvirt::Context::UnvirtContext::ProcSave(const CmdHelper::ArgumentsMap* amap) {
+	void Unvirt::Context::UnvirtContext::ProcSave(const CmdHelper::ArgumentsMap& amap) {
 		// check pre-requirement
 		if (!HasOpenedFile()) {
-			PrintCommonError("No loaded file.");
+			PrintCommonError(u8"No loaded file.");
+			return;
+		}
+		if (!m_Ctx->IsValidEncoding()) {
+			PrintCommonError(u8"You have not set encoding properly. Set it before saving by calling 'encoding'.");
 			return;
 		}
 
-		std::string filepath = *amap->Get<CmdHelper::StringArgument::vType>("filepath");
+		std::u8string filepath = amap.Get<CmdHelper::Nodes::StringArgument::ArgValue_t>(u8"filepath").Get();
 
 		// construct writer from reader
 		LibCmo::CK2::CKFileWriter writer(m_Ctx, m_FileReader, m_IsShallowRead);
@@ -329,7 +364,7 @@ namespace Unvirt::Context {
 		LibCmo::CK2::CKERROR err = writer.Save(filepath.c_str());
 		if (err != LibCmo::CK2::CKERROR::CKERR_OK) {
 			// fail to load. release all.
-			PrintCommonError("Fail to save file. Function return: %s\n\t%s",
+			PrintCommonError(u8"Fail to save file. Function return: %s\n\t%s",
 				Unvirt::AccessibleValue::GetCkErrorName(err).c_str(),
 				Unvirt::AccessibleValue::GetCkErrorDescription(err).c_str()
 			);
@@ -340,10 +375,10 @@ namespace Unvirt::Context {
 
 	}
 
-	void UnvirtContext::ProcInfo(const CmdHelper::ArgumentsMap*) {
+	void UnvirtContext::ProcInfo(const CmdHelper::ArgumentsMap&) {
 		// check pre-requirement
 		if (!HasOpenedFile()) {
-			PrintCommonError("No loaded file.");
+			PrintCommonError(u8"No loaded file.");
 			return;
 		}
 
@@ -351,46 +386,46 @@ namespace Unvirt::Context {
 		Unvirt::StructFormatter::PrintCKFileInfo(m_FileReader->GetFileInfo());
 	}
 
-	void UnvirtContext::ProcLs(const CmdHelper::ArgumentsMap* amap) {
+	void UnvirtContext::ProcLs(const CmdHelper::ArgumentsMap& amap) {
 		// check pre-requirement
 		if (!HasOpenedFile()) {
-			PrintCommonError("No loaded file.");
+			PrintCommonError(u8"No loaded file.");
 			return;
 		}
 
 		// get 0 based page (-1)
-		size_t page = *amap->Get<CmdHelper::IntArgument::vType>("page") - 1;
+		size_t page = amap.Get<CmdHelper::Nodes::ArithmeticArgument<size_t>::ArgValue_t>(u8"page").Get() - 1u;
 
 		// show list
-		switch (*amap->Get<CmdHelper::Choice::vType>("part")) {
-			case 0:
+		switch (amap.Get<CmdHelper::Nodes::Choice::ArgValue_t>(u8"part").Get()) {
+			case 0u:
 			{
 				// obj list
 				Unvirt::StructFormatter::PrintObjectList(
-					m_FileReader->GetFileObjects(), 
-					m_FileReader->GetFileInfo(), 
+					m_FileReader->GetFileObjects(),
+					m_FileReader->GetFileInfo(),
 					page, this->m_PageLen,
 					m_ListStyleIsFull
 				);
 				break;
 			}
-			case 1:
+			case 1u:
 			{
 				// mgr list
 				Unvirt::StructFormatter::PrintManagerList(
-					m_FileReader->GetManagersData(), 
+					m_FileReader->GetManagersData(),
 					page, this->m_PageLen,
 					m_ListStyleIsFull
 				);
 				break;
 			}
-			case 2:
+			case 2u:
 			{
 				// search list
 				switch (m_SearchPart) {
 					case SearchPart::None:
 					{
-						PrintCommonError("No search result to list.");
+						PrintCommonError(u8"No search result to list.");
 						break;
 					}
 					case SearchPart::Object:
@@ -417,60 +452,64 @@ namespace Unvirt::Context {
 				}
 				break;
 			}
+			default:
+				throw std::runtime_error("unreachable code");
 		}
 	}
 
-	void UnvirtContext::ProcData( const CmdHelper::ArgumentsMap* amap) {
+	void UnvirtContext::ProcData(const CmdHelper::ArgumentsMap& amap) {
 		// check pre-requirement
 		if (!HasOpenedFile()) {
-			PrintCommonError("No loaded file.");
+			PrintCommonError(u8"No loaded file.");
 			return;
 		}
 
 		// get index
-		size_t index = *amap->Get<CmdHelper::IntArgument::vType>("index");
+		size_t index = amap.Get<CmdHelper::Nodes::ArithmeticArgument<size_t>::ArgValue_t>(u8"index").Get();
 
 		// show data
-		switch (*amap->Get<CmdHelper::Choice::vType>("part")) {
-			case 0:
+		switch (amap.Get<CmdHelper::Nodes::Choice::ArgValue_t>(u8"part").Get()) {
+			case 0u:
 			{
 				if (index >= m_FileReader->GetFileObjects().size()) {
-					PrintCommonError("Index out of range.");
+					PrintCommonError(u8"Index out of range.");
 					return;
 				}
 				Unvirt::StructFormatter::PrintCKObject(m_FileReader->GetFileObjects()[index].ObjPtr);
 				break;
 			}
-			case 1:
+			case 1u:
 			{
 				if (index >= m_FileReader->GetManagersData().size()) {
-					PrintCommonError("Index out of range.");
+					PrintCommonError(u8"Index out of range.");
 					return;
 				}
 				// todo: finish manager display
-				PrintCommonError("Not supported now.");
+				PrintCommonError(u8"Not supported now.");
 				//Unvirt::StructFormatter::PrintCKBaseManager(m_FileReader->GetManagersData()[index].Data);
 				break;
 			}
+			default:
+				throw std::runtime_error("unreachable code");
 		}
 	}
 
-	void UnvirtContext::ProcChunk(const CmdHelper::ArgumentsMap* amap) {
+	void UnvirtContext::ProcChunk(const CmdHelper::ArgumentsMap& amap) {
 		// check pre-requirement
 		if (!HasOpenedFile()) {
-			PrintCommonError("No loaded file.");
+			PrintCommonError(u8"No loaded file.");
 			return;
 		}
 
 		// get index
-		size_t index = *amap->Get<CmdHelper::IntArgument::vType>("index");
+		size_t index = amap.Get<CmdHelper::Nodes::ArithmeticArgument<size_t>::ArgValue_t>(u8"index").Get();
 
 		// show data
-		switch (*amap->Get<CmdHelper::Choice::vType>("part")) {
+		switch (amap.Get<CmdHelper::Nodes::Choice::ArgValue_t>(u8"part").Get()) {
 			case 0:
 			{
 				if (index >= m_FileReader->GetFileObjects().size()) {
-					PrintCommonError("Index out of range.");
+					PrintCommonError(u8"Index out of range.");
 					return;
 				}
 				Unvirt::StructFormatter::PrintCKStateChunk(m_FileReader->GetFileObjects()[index].Data);
@@ -479,29 +518,31 @@ namespace Unvirt::Context {
 			case 1:
 			{
 				if (index >= m_FileReader->GetManagersData().size()) {
-					PrintCommonError("Index out of range.");
+					PrintCommonError(u8"Index out of range.");
 					return;
 				}
 				Unvirt::StructFormatter::PrintCKStateChunk(m_FileReader->GetManagersData()[index].Data);
 				break;
 			}
+			default:
+				throw std::runtime_error("unreachable code");
 		}
 	}
 
-	void UnvirtContext::ProcSearch(const CmdHelper::ArgumentsMap* amap) {
+	void UnvirtContext::ProcSearch(const CmdHelper::ArgumentsMap& amap) {
 		// check pre-requirement
 		if (!HasOpenedFile()) {
-			PrintCommonError("No loaded file.");
+			PrintCommonError(u8"No loaded file.");
 			return;
 		}
 
-		// get search text
-		std::string search_text(*amap->Get<CmdHelper::StringArgument::vType>("text"));
-	
+		// get search text *amap->Get<CmdHelper::StringArgument::vType>("text")
+		std::u8string search_text = amap.Get<CmdHelper::Nodes::StringArgument::ArgValue_t>(u8"text").Get();
+
 		// analyse search mode
-		std::function<bool(const LibCmo::XContainer::XString&)> search_fct = [](const LibCmo::XContainer::XString&) -> bool { return false; };
-		switch (*amap->Get<CmdHelper::Choice::vType>("mode")) {
-			case 0:
+		std::function<bool(const LibCmo::XContainer::XString&)> search_fct = nullptr;
+		switch (amap.Get<CmdHelper::Nodes::Choice::ArgValue_t>(u8"mode").Get()) {
+			case 0u:
 			{
 				// plain mode
 				search_fct = [&search_text](const LibCmo::XContainer::XString& cmp) -> bool {
@@ -509,31 +550,37 @@ namespace Unvirt::Context {
 				};
 				break;
 			}
-			case 1:
+			case 1u:
 			{
 				// regex mode
-				
+
+				// get ordinary search text
+				std::string ordinary_search_text = YYCC::EncodingHelper::ToOrdinary(search_text);
 				// try construct regex
 				std::regex re;
 				try {
-					re = std::regex(search_text, std::regex_constants::ECMAScript);
+					re = std::regex(ordinary_search_text, std::regex_constants::ECMAScript);
 				} catch (const std::regex_error& e) {
-					PrintCommonError("Invalid regular expressions: %s", e.what());
+					PrintCommonError(u8"Invalid regular expressions: %s", e.what());
 					return;
 				}
 
 				// use copy ctor capture to input regex
 				// because re will be freed when exiting this switch.
 				search_fct = [re](const LibCmo::XContainer::XString& cmp) -> bool {
-					return std::regex_search(cmp, re);
+					// get ordinary name and comapre
+					std::string ordinary_cmp = YYCC::EncodingHelper::ToOrdinary(cmp);
+					return std::regex_search(ordinary_cmp, re);
 				};
 				break;
 			}
+			default:
+				throw std::runtime_error("unreachable code");
 		}
 
 		// start search
-		switch (*amap->Get<CmdHelper::Choice::vType>("part")) {
-			case 0:
+		switch (amap.Get<CmdHelper::Nodes::Choice::ArgValue_t>(u8"part").Get()) {
+			case 0u:
 			{
 				// object
 				m_SearchPart = SearchPart::Object;
@@ -549,85 +596,91 @@ namespace Unvirt::Context {
 
 				break;
 			}
-			case 1:
+			case 1u:
 			{
 				// manager
 				m_SearchPart = SearchPart::Manager;
 				m_SearchIdxResult.clear();
-				PrintCommonError("Not supported now.");
+				PrintCommonError(u8"Not supported now.");
 				// todo: remove this return when fixing manager searching.
 				return;
 				break;
 			}
+			default:
+				throw std::runtime_error("unreachable code");
 		}
 
 		// report search result
 		if (m_SearchIdxResult.empty()) {
-			PrintCommonInfo("Search done, but no result.");
+			PrintCommonInfo(u8"Search done, but no result.");
 		} else {
-			PrintCommonInfo("Search done with %" PRIuSIZET " results. Use `ls search` to check them.", m_SearchIdxResult.size());
+			PrintCommonInfo(u8"Search done with %" PRIuSIZET " results. Use `ls search` to check them.", m_SearchIdxResult.size());
 		}
 	}
 
-	void UnvirtContext::ProcItems(const CmdHelper::ArgumentsMap* amap) {
+	void UnvirtContext::ProcItems(const CmdHelper::ArgumentsMap& amap) {
 		// assign
-		m_PageLen = *amap->Get<CmdHelper::IntArgument::vType>("count");
+		m_PageLen = amap.Get<CmdHelper::Nodes::ArithmeticArgument<size_t>::ArgValue_t>(u8"count").Get();
 	}
 
-	void UnvirtContext::ProcStyle(const CmdHelper::ArgumentsMap* amap) {
+	void UnvirtContext::ProcStyle(const CmdHelper::ArgumentsMap& amap) {
 		// set list style level
-		switch (*amap->Get<CmdHelper::Choice::vType>("level")) {
-			case 0:
+		switch (amap.Get<CmdHelper::Nodes::Choice::ArgValue_t>(u8"level").Get()) {
+			case 0u:
 			{
 				// full level
 				m_ListStyleIsFull = true;
 				break;
 			}
-			case 1:
+			case 1u:
 			{
 				// simple level
 				m_ListStyleIsFull = false;
 				break;
 			}
+			default:
+				throw std::runtime_error("unreachable code");
 		}
 	}
 
-	void UnvirtContext::ProcEncoding(const CmdHelper::ArgumentsMap* amap) {
-		const auto& encodings = *amap->Get<CmdHelper::EncodingArgument::vType>("enc");
+	void UnvirtContext::ProcEncoding(const CmdHelper::ArgumentsMap& amap) {
+		const auto& encodings = amap.Get<CmdHelper::Nodes::EncodingListArgument::ArgValue_t>(u8"enc").Get();
 		m_Ctx->SetEncoding(encodings);
 	}
 
-	void UnvirtContext::ProcTemp(const CmdHelper::ArgumentsMap* amap) {
+	void UnvirtContext::ProcTemp(const CmdHelper::ArgumentsMap& amap) {
 		// assign
-		if (!m_Ctx->GetPathManager()->SetTempFolder(amap->Get<CmdHelper::StringArgument::vType>("temppath")->c_str())) {
-			PrintCommonError("Set temp folder failed. Check your path first.");
+		std::u8string temp_path = amap.Get<CmdHelper::Nodes::StringArgument::ArgValue_t>(u8"temppath").Get();
+		if (!m_Ctx->GetPathManager()->SetTempFolder(temp_path.c_str())) {
+			PrintCommonError(u8"Set temp folder failed. Check your path first.");
 		}
 	}
 
-	void Unvirt::Context::UnvirtContext::ProcRsc(const CmdHelper::ArgumentsMap* amap, bool isClear) {
-		if (isClear) {
+	void Unvirt::Context::UnvirtContext::ProcRsc(const CmdHelper::ArgumentsMap& amap, bool is_clear) {
+		if (is_clear) {
 			m_Ctx->GetPathManager()->ClearPath();
 		} else {
-			if (!m_Ctx->GetPathManager()->AddPath(amap->Get<CmdHelper::StringArgument::vType>("datares")->c_str())) {
-				PrintCommonError("Set data resource folder failed. Check your path first.");
+			std::u8string data_res = amap.Get<CmdHelper::Nodes::StringArgument::ArgValue_t>(u8"datares").Get();
+			if (!m_Ctx->GetPathManager()->AddPath(data_res.c_str())) {
+				PrintCommonError(u8"Set data resource folder failed. Check your path first.");
 			}
 		}
 	}
 
-	void Unvirt::Context::UnvirtContext::ProcTest(const CmdHelper::ArgumentsMap* amap) {
+	void Unvirt::Context::UnvirtContext::ProcTest(const CmdHelper::ArgumentsMap& amap) {
 #if defined(LIBCMO_BUILD_DEBUG)
 		// MARK: Add the debug code here.
-		
+
 		// todo: temporaryly write Transparent Column Fixer code.
 		// move to independent app in future.
-		
+
 		// check pre-requirement
 		if (!HasOpenedFile()) {
-			PrintCommonError("No loaded file.");
+			PrintCommonError(u8"No loaded file.");
 			return;
 		}
 		if (!m_IsShallowRead) {
-			PrintCommonError("Transparent Column Fixer only accept shallow loaded file.");
+			PrintCommonError(u8"Transparent Column Fixer only accept shallow loaded file.");
 			return;
 		}
 
@@ -653,21 +706,21 @@ namespace Unvirt::Context {
 					}
 				}
 			}
-		}
+				}
 
 #else
-		PrintCommonError("Test command only available in Debug mode.");
+		PrintCommonError(u8"Test command only available in Debug mode.");
 #endif
+			}
+
+	void Unvirt::Context::UnvirtContext::ProcHelp(const CmdHelper::ArgumentsMap&) {
+		m_Help.Print();
 	}
 
-	void Unvirt::Context::UnvirtContext::ProcHelp(const CmdHelper::ArgumentsMap*) {
-		m_Help->Print();
-	}
-
-	void UnvirtContext::ProcExit(const CmdHelper::ArgumentsMap*) {
+	void UnvirtContext::ProcExit(const CmdHelper::ArgumentsMap&) {
 		m_OrderExit = true;
 	}
 
 #pragma endregion
 
-}
+		}
diff --git a/Unvirt/UnvirtContext.hpp b/Unvirt/UnvirtContext.hpp
index 3755f54..f25821d 100644
--- a/Unvirt/UnvirtContext.hpp
+++ b/Unvirt/UnvirtContext.hpp
@@ -2,13 +2,9 @@
 #include <VTAll.hpp>
 
 #include "AccessibleValue.hpp"
-#include "TerminalHelper.hpp"
 #include "StructFormatter.hpp"
 #include "CmdHelper.hpp"
 
-#include <cstdio>
-#include <iostream>
-
 namespace Unvirt::Context {
 
 	class UnvirtContext {
@@ -23,39 +19,39 @@ namespace Unvirt::Context {
 		enum class SearchPart {
 			None, Object, Manager
 		};
-		void PrintCommonInfo(const char* u8_fmt, ...);
-		void PrintCommonError(const char* u8_fmt, ...);
+		void PrintCommonInfo(const char8_t* u8_fmt, ...);
+		void PrintCommonError(const char8_t* u8_fmt, ...);
 
-		void ProcLoad(const CmdHelper::ArgumentsMap* amap);
-		void ProcUnLoad(const CmdHelper::ArgumentsMap* amap);
-		void ProcSave(const CmdHelper::ArgumentsMap* amap);
-		void ProcInfo(const CmdHelper::ArgumentsMap* amap);
-		void ProcLs(const CmdHelper::ArgumentsMap* amap);
-		void ProcData(const CmdHelper::ArgumentsMap* amap);
-		void ProcChunk(const CmdHelper::ArgumentsMap* amap);
-		void ProcSearch(const CmdHelper::ArgumentsMap* amap);
-		void ProcItems(const CmdHelper::ArgumentsMap* amap);
-		void ProcStyle(const CmdHelper::ArgumentsMap* amap);
-		void ProcEncoding(const CmdHelper::ArgumentsMap* amap);
-		void ProcTemp(const CmdHelper::ArgumentsMap* amap);
-		void ProcRsc(const CmdHelper::ArgumentsMap* amap, bool isClear);
-		void ProcTest(const CmdHelper::ArgumentsMap* amap);
-		void ProcHelp(const CmdHelper::ArgumentsMap* amap);
-		void ProcExit(const CmdHelper::ArgumentsMap* amap);
+		void ProcLoad(const CmdHelper::ArgumentsMap& amap);
+		void ProcUnLoad(const CmdHelper::ArgumentsMap& amap);
+		void ProcSave(const CmdHelper::ArgumentsMap& amap);
+		void ProcInfo(const CmdHelper::ArgumentsMap& amap);
+		void ProcLs(const CmdHelper::ArgumentsMap& amap);
+		void ProcData(const CmdHelper::ArgumentsMap& amap);
+		void ProcChunk(const CmdHelper::ArgumentsMap& amap);
+		void ProcSearch(const CmdHelper::ArgumentsMap& amap);
+		void ProcItems(const CmdHelper::ArgumentsMap& amap);
+		void ProcStyle(const CmdHelper::ArgumentsMap& amap);
+		void ProcEncoding(const CmdHelper::ArgumentsMap& amap);
+		void ProcTemp(const CmdHelper::ArgumentsMap& amap);
+		void ProcRsc(const CmdHelper::ArgumentsMap& amap, bool is_clear);
+		void ProcTest(const CmdHelper::ArgumentsMap& amap);
+		void ProcHelp(const CmdHelper::ArgumentsMap& amap);
+		void ProcExit(const CmdHelper::ArgumentsMap& amap);
 
 	protected:
 		bool HasOpenedFile();
 		void ClearDocument();
 		void PrintContextMsg(LibCmo::CKSTRING msg);
 
-		CmdHelper::CommandRoot m_Root;
-		CmdHelper::HelpDocument* m_Help;
 		CmdHelper::CmdSplitter m_Splitter;
+		CmdHelper::CommandParser m_Parser;
+		CmdHelper::HelpDocument m_Help;
 
 		size_t m_PageLen;
 		bool m_ListStyleIsFull;
 		SearchPart m_SearchPart;
-		LibCmo::XContainer::XArray<size_t> m_SearchIdxResult;
+		std::vector<size_t> m_SearchIdxResult;
 
 		bool m_OrderExit;
 		LibCmo::CK2::CKContext* m_Ctx;