diff --git a/LibCmo/CK2/CKContext.cpp b/LibCmo/CK2/CKContext.cpp
index 03622e2..ab9244a 100644
--- a/LibCmo/CK2/CKContext.cpp
+++ b/LibCmo/CK2/CKContext.cpp
@@ -78,6 +78,19 @@ namespace LibCmo::CK2 {
 
 	}
 
+	void CKContext::DestroyAllCKObjects() {
+		// free all created objects
+		for (auto& ptr : m_ObjectsList) {
+			if (ptr != nullptr) {
+				InternalDestroy(this, ptr);
+			}
+		}
+		// restore returned object list
+		m_ReturnedObjectIds.clear();
+		// empty object list
+		m_ObjectsList.clear();
+	}
+
 #pragma endregion
 
 #pragma region Ctor Dtor
@@ -96,13 +109,7 @@ namespace LibCmo::CK2 {
 	}
 
 	CKContext::~CKContext() {
-		// free all created objects
-		for (auto& ptr : m_ObjectsList) {
-			if (ptr != nullptr) {
-				InternalDestroy(this, ptr);
-			}
-		}
-
+		DestroyAllCKObjects();
 	}
 
 #pragma endregion
diff --git a/LibCmo/CK2/CKContext.hpp b/LibCmo/CK2/CKContext.hpp
index d8a423d..ba3bc9c 100644
--- a/LibCmo/CK2/CKContext.hpp
+++ b/LibCmo/CK2/CKContext.hpp
@@ -42,6 +42,7 @@ namespace LibCmo::CK2 {
 			CK_CREATIONMODE* res = nullptr);
 		ObjImpls::CKObject* GetCKObject(CK_ID id);
 		void DestroyCKObject(CK_ID id);
+		void DestroyAllCKObjects();
 
 		// ========== Object Access ==========
 
diff --git a/LibCmo/CK2/CKStateChunk.cpp b/LibCmo/CK2/CKStateChunk.cpp
index a156b55..1cddbf4 100644
--- a/LibCmo/CK2/CKStateChunk.cpp
+++ b/LibCmo/CK2/CKStateChunk.cpp
@@ -440,6 +440,39 @@ namespace LibCmo::CK2 {
 		return true;
 	}
 
+	XContainer::XArray<IdentifierProfile> CKStateChunk::GetIdentifierProfile() {
+		XContainer::XArray<IdentifierProfile> collection;
+		if (this->m_Parser.m_Status != CKStateChunkStatus::READ) return collection;
+
+		CKDWORD pos = 0u;
+		if (this->m_DataDwSize < 2u) return collection;	// impossible to have a identifier
+
+		// iterate identifier
+		while (true) {
+			// add current identifier
+			CKDWORD nextptr = this->m_pData[pos + 1];
+			if (nextptr == 0u) {
+				nextptr = this->m_DataDwSize;	// got tail. no more identifier
+			}
+			collection.emplace_back(IdentifierProfile{
+				this->m_pData[pos],
+				this->m_pData + pos + 2,
+				sizeof(CKDWORD) * (nextptr - pos - 2u)
+			});
+
+			// move to next identifier or exit
+			// got tail. no more identifier
+			if (this->m_pData[pos + 1] == 0u) break;
+
+			pos = this->m_pData[pos + 1];
+
+			// out of buffer
+			if (pos + 1 >= this->m_DataDwSize) break;
+		};
+		return collection;
+
+	}
+
 	/* ========== Basic Data Read Functions ==========*/
 
 	bool CKStateChunk::ReadByteData(void* data_ptr, CKDWORD size_in_byte) {
diff --git a/LibCmo/CK2/CKStateChunk.hpp b/LibCmo/CK2/CKStateChunk.hpp
index 54ea423..6107f04 100644
--- a/LibCmo/CK2/CKStateChunk.hpp
+++ b/LibCmo/CK2/CKStateChunk.hpp
@@ -4,6 +4,12 @@
 
 namespace LibCmo::CK2 {
 
+	struct IdentifierProfile {
+		CKDWORD m_Identifier;
+		void* m_DataPtr;
+		CKDWORD m_AreaSize;
+	};
+
 	class CKStateChunk {
 	public:
 		//CKStateChunk();
@@ -89,6 +95,7 @@ namespace LibCmo::CK2 {
 		inline bool SeekIdentifierAndReturnSize(TEnum enum_v, CKDWORD* out_size) {
 			return SeekIdentifierDwordAndReturnSize(static_cast<CKDWORD>(enum_v), out_size);
 		}
+		XContainer::XArray<IdentifierProfile> GetIdentifierProfile();
 
 		/* ========== Basic Data Read Functions ==========*/
 
diff --git a/Unvirt/CmdHelper.cpp b/Unvirt/CmdHelper.cpp
index b67e844..ccb62e9 100644
--- a/Unvirt/CmdHelper.cpp
+++ b/Unvirt/CmdHelper.cpp
@@ -174,6 +174,7 @@ namespace Unvirt::CmdHelper {
 
 	void HelpDocument::Print() {
 		for (auto& item : m_Results) {
+			fputs("Syntax: ", stdout);
 			for (auto& cmd : item.m_ArgDesc) {
 				fputs(cmd.m_Name.c_str(), stdout);
 				fputc(' ', stdout);
@@ -181,8 +182,7 @@ namespace Unvirt::CmdHelper {
 			fputc('\n', stdout);
 
 			if (!item.m_CmdDesc.empty()) {
-				fputs(item.m_CmdDesc.c_str(), stdout);
-				fputc('\n', stdout);
+				fprintf(stdout, "Description: %s\n", item.m_CmdDesc.c_str());
 			}
 
 			for (auto& cmd : item.m_ArgDesc) {
diff --git a/Unvirt/CmdHelper.hpp b/Unvirt/CmdHelper.hpp
index a45be12..284f96e 100644
--- a/Unvirt/CmdHelper.hpp
+++ b/Unvirt/CmdHelper.hpp
@@ -220,7 +220,8 @@ namespace Unvirt::CmdHelper {
 	class StringArgument : public AbstractArgument {
 	public:
 		using vType = std::string;
-		StringArgument(const char* argname) : AbstractArgument(argname) {}
+		StringArgument(const char* argname) : 
+			AbstractArgument(argname) {}
 		virtual ~StringArgument() {}
 		LIBCMO_DISABLE_COPY_MOVE(StringArgument);
 
@@ -232,7 +233,8 @@ namespace Unvirt::CmdHelper {
 	class EncodingArgument : public AbstractArgument {
 	public:
 		using vType = std::vector<std::string>;
-		EncodingArgument(const char* argname) : AbstractArgument(argname) {}
+		EncodingArgument(const char* argname) : 
+			AbstractArgument(argname) {}
 		virtual ~EncodingArgument() {}
 		LIBCMO_DISABLE_COPY_MOVE(EncodingArgument);
 
diff --git a/Unvirt/StructFormatter.cpp b/Unvirt/StructFormatter.cpp
index 8684b14..f7f941d 100644
--- a/Unvirt/StructFormatter.cpp
+++ b/Unvirt/StructFormatter.cpp
@@ -1,17 +1,68 @@
 #include <VTAll.hpp>
+#include <CK2/CKStateChunk.hpp>
 #include "StructFormatter.hpp"
 #include "AccessibleValue.hpp"
 #include "TerminalHelper.hpp"
 
 namespace Unvirt::StructFormatter {
 
-	static FILE* fout = stdout;
+#pragma region Assist Functions
+
+	static void PrintCKSTRING(const LibCmo::TypeHelper::MKString& name) {
+		LibCmo::CK2::CKSTRING ckname = name.c_str();
+		if (ckname == nullptr) {
+			fputs(UNVIRT_TERMCOL_LIGHT_MAGENTA(("<anonymous>")), stdout);
+		} else {
+			fputs(ckname, stdout);
+		}
+	}
+	static void PrintPointer(const void* ptr) {
+		if (ptr == nullptr) {
+			fputs(UNVIRT_TERMCOL_LIGHT_CYAN(("<null>")), stdout);
+		} else {
+#if UINTPTR_MAX == UINT32_MAX
+			// 32 bit. padding 8 zero
+			fprintf(stdout, "<0x%08" PRIXPTR ">", reinterpret_cast<uintptr_t>(ptr));
+#else
+			// 64 bit. padding 16 zero
+			fprintf(stdout, "<0x%016" PRIXPTR ">", reinterpret_cast<uintptr_t>(ptr));
+#endif
+		}
+	}
+	static void PrintCKGUID(const LibCmo::CK2::CKGUID& guid) {
+		fprintf(stdout, "<0x%08" PRIx32 ", 0x%08" PRIx32 ">", guid.d1, guid.d2);
+	}
+	static void PrintIdentifier(const LibCmo::CK2::CKDWORD val) {
+		fprintf(stdout, "0x%08" PRIx32, val);
+	}
+	
+	template<class _Ty>
+	static void GeneralPrintList(
+		const std::vector<_Ty>& data, size_t page, size_t pageitems,
+		std::function<void()> printHdrFct, std::function<void(size_t,const _Ty&)> printEntryFct) {
+
+		size_t fulllen = data.size(),
+			startpos = page * pageitems,
+			fullpage = fulllen / pageitems;
+
+		// print header
+		printHdrFct();
+
+		// print body
+		for (size_t counter = startpos; counter < fulllen && (counter - startpos) < pageitems; ++counter) {
+			printEntryFct(counter, data[counter]);
+		}
+
+		fprintf(stdout, "Page %zu of %zu\n", page + 1, fullpage + 1);
+	}
+
+#pragma endregion
 
 	void PrintCKFileInfo(const LibCmo::CK2::CKFileInfo& fileinfo) {
 
-		fputs(UNVIRT_TERMCOL_LIGHT_YELLOW(("CKFileInfo\n")), fout);
-		fprintf(fout, "FileVersion: %" PRIu32 "\n", fileinfo.FileVersion);
-		fprintf(fout, "CKVersion: %02" PRIX32 "/%02" PRIX32 "/%04" PRIX32 "\n",
+		fputs(UNVIRT_TERMCOL_LIGHT_YELLOW(("CKFileInfo\n")), stdout);
+		fprintf(stdout, "FileVersion: %" PRIu32 "\n", fileinfo.FileVersion);
+		fprintf(stdout, "CKVersion: %02" PRIX32 "/%02" PRIX32 "/%04" PRIX32 "\n",
 			(fileinfo.CKVersion >> 24) & 0xFF,
 			(fileinfo.CKVersion >> 16) & 0xFF,
 			(fileinfo.CKVersion >> 0) & 0xFFFF
@@ -23,118 +74,104 @@ namespace Unvirt::StructFormatter {
 			(fileinfo.ProductBuild >> 8) & 0xFF,
 			(fileinfo.ProductBuild >> 0) & 0xFF,
 		};
-		fprintf(fout, "Product (Version / Build): %" PRIu32 " / %" PRIu32 ".%" PRIu32 ".%" PRIu32 ".%" PRIu32 "\n",
+		fprintf(stdout, "Product (Version / Build): %" PRIu32 " / %" PRIu32 ".%" PRIu32 ".%" PRIu32 ".%" PRIu32 "\n",
 			fileinfo.ProductVersion, product_series[0], product_series[1], product_series[2], product_series[3]
 		);
 
-		fprintf(fout, "Save Flags: %s\n", Unvirt::AccessibleValue::GetFlagEnumName(
+		fprintf(stdout, "Save Flags: %s\n", Unvirt::AccessibleValue::GetFlagEnumName(
 			fileinfo.FileWriteMode, Unvirt::AccessibleValue::EnumDesc::CK_FILE_WRITEMODE
 		).c_str());
 
-		fprintf(fout, "File Size: %s\n", Unvirt::AccessibleValue::GetReadableFileSize(fileinfo.FileSize).c_str());
+		fprintf(stdout, "File Size: %s\n", Unvirt::AccessibleValue::GetReadableFileSize(fileinfo.FileSize).c_str());
 
-		fprintf(fout, "Crc: 0x%" PRIX32 "\n", fileinfo.Crc);
-		fputc('\n', fout);
+		fprintf(stdout, "Crc: 0x%" PRIX32 "\n", fileinfo.Crc);
+		fputc('\n', stdout);
 
 
-		fputs("Hdr1 (Pack / UnPack): ", fout);
-		fprintf(fout, "%s / ", Unvirt::AccessibleValue::GetReadableFileSize(fileinfo.Hdr1PackSize).c_str());
-		fprintf(fout, "%s\n", Unvirt::AccessibleValue::GetReadableFileSize(fileinfo.Hdr1UnPackSize).c_str());
+		fputs("Hdr1 (Pack / UnPack): ", stdout);
+		fprintf(stdout, "%s / ", Unvirt::AccessibleValue::GetReadableFileSize(fileinfo.Hdr1PackSize).c_str());
+		fprintf(stdout, "%s\n", Unvirt::AccessibleValue::GetReadableFileSize(fileinfo.Hdr1UnPackSize).c_str());
 
-		fputs("Data (Pack / UnPack): ", fout);
-		fprintf(fout, "%s / ", Unvirt::AccessibleValue::GetReadableFileSize(fileinfo.DataPackSize).c_str());
-		fprintf(fout, "%s\n", Unvirt::AccessibleValue::GetReadableFileSize(fileinfo.DataUnPackSize).c_str());
-		fputc('\n', fout);
+		fputs("Data (Pack / UnPack): ", stdout);
+		fprintf(stdout, "%s / ", Unvirt::AccessibleValue::GetReadableFileSize(fileinfo.DataPackSize).c_str());
+		fprintf(stdout, "%s\n", Unvirt::AccessibleValue::GetReadableFileSize(fileinfo.DataUnPackSize).c_str());
+		fputc('\n', stdout);
 
 
-		fprintf(fout, "Manager Count: %" PRIu32 "\nObject Count: %" PRIu32 "\nMax ID Saved: %" PRIu32 "\n",
+		fprintf(stdout, "Manager Count: %" PRIu32 "\nObject Count: %" PRIu32 "\nMax ID Saved: %" PRIu32 "\n",
 			fileinfo.ManagerCount, fileinfo.ObjectCount, fileinfo.MaxIDSaved
 		);
 
 	}
 
-	static void PrintCKSTRING(const LibCmo::TypeHelper::MKString& name) {
-		LibCmo::CK2::CKSTRING ckname = name.c_str();
-		if (ckname == nullptr) {
-			fputs(UNVIRT_TERMCOL_LIGHT_MAGENTA(("<anonymous>")), fout);
-		} else {
-			fputs(ckname, fout);
-		}
-		//if (name.empty()) {
-		//	fputs(UNVIRT_TERMCOL_LIGHT_MAGENTA(("<anonymous>")), fout);
-		//} else {
-		//	fputs(name.c_str(), fout);
-		//}
-	}
-	static void PrintPointer(const void* ptr) {
-		if (ptr == nullptr) {
-			fputs(UNVIRT_TERMCOL_LIGHT_CYAN(("<null>")), fout);
-		} else {
-			fprintf(fout, "<0x%08zX>", reinterpret_cast<size_t>(ptr));
-		}
-	}
-	static void PrintCKGUID(const LibCmo::CK2::CKGUID& guid) {
-		fprintf(stdout, "<0x%08" PRIx32 ", 0x%08" PRIx32 ">", guid.d1, guid.d2);
-	}
-
 	void PrintObjectList(const LibCmo::XContainer::XArray<LibCmo::CK2::CKFileObject>& ls, size_t page, size_t pageitems) {
 
-		fputs(UNVIRT_TERMCOL_LIGHT_YELLOW(("CKFileObject\n")), fout);
-		size_t fulllen = ls.size(),
-			startpos = page * pageitems,
-			fullpage = fulllen / pageitems;
+		fputs(UNVIRT_TERMCOL_LIGHT_YELLOW(("CKFileObject\n")), stdout);
+		GeneralPrintList<LibCmo::CK2::CKFileObject>(ls, page, pageitems,
+			[]() -> void {
+				fputs("Index\tThis CK ID\tFile CK ID\tType\tCKObject\tCKStateChunk\tName\n", stdout);
+			},
+			[](size_t index, const LibCmo::CK2::CKFileObject& obj) -> void {
+				fprintf(stdout, "#%zu\t", index);
+				fprintf(stdout, "%" PRIu32 "\t%" PRIu32 "\t", obj.CreatedObjectId, obj.ObjectId);
+				fprintf(stdout, "%s\t", Unvirt::AccessibleValue::GetClassIdName(obj.ObjectCid).c_str());
+				PrintPointer(obj.ObjPtr);
+				fputc('\t', stdout);
+				PrintPointer(obj.Data);
+				fputc('\t', stdout);
+				PrintCKSTRING(obj.Name);
+				fputc('\n', stdout);
+			}
+		);
 
-		// print header
-		fputs("CK ID\tType\tCKObject\tCKStateChunk\tName\n", fout);
-
-		// print body
-		for (size_t counter = startpos; counter < fulllen && (counter - startpos) < pageitems; ++counter) {
-			const auto& obj = ls[counter];
-
-			fprintf(fout, "%" PRIu32 "\t", obj.ObjectId);
-			fprintf(fout, "%s\t", Unvirt::AccessibleValue::GetClassIdName(obj.ObjectCid).c_str());
-			PrintPointer(obj.ObjPtr);
-			fputc('\t', fout);
-			PrintPointer(obj.Data);
-			fputc('\t', fout);
-			PrintCKSTRING(obj.Name);
-			fputc('\n', fout);
-		}
-
-		fprintf(fout, "Page %zu of %zu\n", page + 1, fullpage + 1);
 	}
 
 	void PrintManagerList(const LibCmo::XContainer::XArray<LibCmo::CK2::CKFileManagerData>& ls, size_t page, size_t pageitems) {
 
-		fputs(UNVIRT_TERMCOL_LIGHT_YELLOW(("CKFileManager\n")), fout);
-		size_t fulllen = ls.size(),
-			startpos = page * pageitems,
-			fullpage = fulllen / pageitems;
+		fputs(UNVIRT_TERMCOL_LIGHT_YELLOW(("CKFileManager\n")), stdout);
+		GeneralPrintList<LibCmo::CK2::CKFileManagerData>(ls, page, pageitems,
+			[]() -> void {
+				// print header
+				fputs("Index\tCKGUID\tCKStateChunk\n", stdout);
+			},
+			[](size_t index, const LibCmo::CK2::CKFileManagerData& mgr) -> void {
+				// print body
+				fprintf(stdout, "#%zu\t", index);
+				PrintCKGUID(mgr.Manager);
+				fputc('\t', stdout);
+				PrintPointer(mgr.Data);
+				fputc('\n', stdout);
+			}
+		);
 
+	}
+
+	void PrintCKObject(const LibCmo::CK2::ObjImpls::CKObject* obj) {
+		fputs(UNVIRT_TERMCOL_LIGHT_YELLOW(("CKObject\n")), stdout);
+		fputs(UNVIRT_TERMCOL_LIGHT_RED(("Not Implemented.\n")), stdout);
+	}
+	void PrintCKBaseManager(const LibCmo::CK2::MgrImpls::CKBaseManager* mgr) {
+		fputs(UNVIRT_TERMCOL_LIGHT_YELLOW(("CKBaseManager\n")), stdout);
+		fputs(UNVIRT_TERMCOL_LIGHT_RED(("Not Implemented.\n")), stdout);
+	}
+	void PrintCKStateChunk(const LibCmo::CK2::CKStateChunk* chunk) {
+		fputs(UNVIRT_TERMCOL_LIGHT_YELLOW(("CKStateChunk\n")), stdout);
+		
 		// print header
-		fputs("CKGUID\tCKBaseManager\tCKStateChunk\n", fout);
-
+		fputs("Identifier\tData Pointer\tData Size\n", stdout);
+		
 		// print body
-		for (size_t counter = startpos; counter < fulllen && (counter - startpos) < pageitems; ++counter) {
-			const auto& mgr = ls[counter];
-
-			PrintCKGUID(mgr.Manager);
-			fputc('\t', fout);
-			PrintPointer(mgr.Data);
-			fputc('\n', fout);
+		LibCmo::CK2::CKStateChunk* operchunk = const_cast<LibCmo::CK2::CKStateChunk*>(chunk);
+		operchunk->StartRead();
+		auto collection = operchunk->GetIdentifierProfile();
+		operchunk->StopRead();
+		for (const auto& profile : collection) {
+			PrintIdentifier(profile.m_Identifier);
+			fputc('\t', stdout);
+			PrintPointer(profile.m_DataPtr);
+			fputc('\t', stdout);
+			fprintf(stdout, "%" PRIckDWORD "\n", profile.m_AreaSize);
 		}
-
-		fprintf(fout, "Page %zu of %zu\n", page + 1, fullpage + 1);
-	}
-
-	void PrintCKObject(const LibCmo::CK2::ObjImpls::CKObject*) {
-		fputs(UNVIRT_TERMCOL_MAGENTA(("NO IMPLEMENTS\n")), fout);
-	}
-	void PrintCKBaseManager(const LibCmo::CK2::MgrImpls::CKBaseManager*) {
-		fputs(UNVIRT_TERMCOL_MAGENTA(("NO IMPLEMENTS\n")), fout);
-	}
-	void PrintCKStateChunk(const LibCmo::CK2::CKStateChunk*) {
-		fputs(UNVIRT_TERMCOL_MAGENTA(("NO IMPLEMENTS\n")), fout);
 	}
 
 }
diff --git a/Unvirt/UnvirtContext.cpp b/Unvirt/UnvirtContext.cpp
index 40c7774..44113ba 100644
--- a/Unvirt/UnvirtContext.cpp
+++ b/Unvirt/UnvirtContext.cpp
@@ -2,12 +2,6 @@
 
 namespace Unvirt::Context {
 
-	static FILE* fout = stdout;
-
-#pragma region Encoding Arg
-
-#pragma endregion
-
 #pragma region UnvirtContext Misc
 
 	UnvirtContext::UnvirtContext() :
@@ -106,6 +100,12 @@ namespace Unvirt::Context {
 				)
 			)
 		)
+		->Then((new CmdHelper::Literal("help"))
+			->Executes(
+				std::bind(&UnvirtContext::ProcHelp, this, std::placeholders::_1),
+				"Output this help page."
+			)
+		)
 		->Then((new CmdHelper::Literal("exit"))
 			->Executes(
 				std::bind(&UnvirtContext::ProcExit, this, std::placeholders::_1),
@@ -132,24 +132,27 @@ namespace Unvirt::Context {
 
 	void UnvirtContext::ClearDocument() {
 		if (m_FileReader == nullptr) return;
+		// delete reader
 		delete m_FileReader;
 		m_FileReader = nullptr;
+		// clear context
+		m_Ctx->DestroyAllCKObjects();
 	}
 
 	void UnvirtContext::PrintContextMsg(LibCmo::CK2::CKSTRING msg) {
 		if (msg != nullptr) {
-			fprintf(fout, UNVIRT_TERMCOL_LIGHT_YELLOW(("[CKContext] ")) "%s\n", msg);
+			fprintf(stdout, UNVIRT_TERMCOL_LIGHT_YELLOW(("[CKContext] ")) "%s\n", msg);
 		}
 	}
 
 	void UnvirtContext::PrintCommonError(const char* u8_fmt, ...) {
 		va_list argptr;
 		va_start(argptr, u8_fmt);
-		std::fputs(UNVIRT_TERMCOLHDR_LIGHT_RED, fout);
-		std::vfprintf(fout, u8_fmt, argptr);
-		std::fputs(UNVIRT_TERMCOLTAIL, fout);
+		std::fputs(UNVIRT_TERMCOLHDR_LIGHT_RED, stdout);
+		std::vfprintf(stdout, u8_fmt, argptr);
+		std::fputs(UNVIRT_TERMCOLTAIL, stdout);
 		va_end(argptr);
-		std::fputc('\n', fout);
+		std::fputc('\n', stdout);
 	}
 
 #pragma endregion
@@ -170,8 +173,7 @@ namespace Unvirt::Context {
 
 			// get sub command
 			if (!m_Root.RootConsume(cmds)) {
-				this->PrintCommonError("Command syntax error \"%s\".", u8cmd.c_str());
-				m_Help->Print();
+				this->PrintCommonError("Syntax error \"%s\".\nType 'help' for usage.", u8cmd.c_str());
 			}
 
 			if (m_OrderExit) {
@@ -187,7 +189,7 @@ namespace Unvirt::Context {
 	void UnvirtContext::ProcLoad(const CmdHelper::ArgumentsMap* amap) {
 		// check pre-requirement
 		if (HasOpenedFile()) {
-			PrintCommonError("Already have a opened file. Close it before calling \"load\".");
+			PrintCommonError("Already have a opened file. Close it before calling 'load'.");
 			return;
 		}
 
@@ -238,7 +240,7 @@ namespace Unvirt::Context {
 	void UnvirtContext::ProcLs(const CmdHelper::ArgumentsMap* amap) {
 		// check pre-requirement
 		if (!HasOpenedFile()) {
-			this->PrintCommonError("No loaded file.");
+			PrintCommonError("No loaded file.");
 			return;
 		}
 
@@ -254,7 +256,6 @@ namespace Unvirt::Context {
 					PrintCommonError("Page out of range.");
 					return;
 				}
-
 				Unvirt::StructFormatter::PrintObjectList(m_FileReader->GetFileObjects(), page, this->m_PageLen);
 				break;
 			}
@@ -265,7 +266,6 @@ namespace Unvirt::Context {
 					PrintCommonError("Page out of range.");
 					return;
 				}
-
 				Unvirt::StructFormatter::PrintManagerList(m_FileReader->GetManagersData(), page, this->m_PageLen);
 				break;
 			}
@@ -275,7 +275,7 @@ namespace Unvirt::Context {
 	void UnvirtContext::ProcData( const CmdHelper::ArgumentsMap* amap) {
 		// check pre-requirement
 		if (!HasOpenedFile()) {
-			this->PrintCommonError("No loaded file.");
+			PrintCommonError("No loaded file.");
 			return;
 		}
 
@@ -299,6 +299,7 @@ namespace Unvirt::Context {
 					PrintCommonError("Index out of range.");
 					return;
 				}
+				PrintCommonError("WIP function.");
 				//Unvirt::StructFormatter::PrintCKBaseManager(m_FileReader->GetManagersData()[index].Data);
 				break;
 			}
@@ -308,7 +309,7 @@ namespace Unvirt::Context {
 	void UnvirtContext::ProcChunk(const CmdHelper::ArgumentsMap* amap) {
 		// check pre-requirement
 		if (!HasOpenedFile()) {
-			this->PrintCommonError("No loaded file.");
+			PrintCommonError("No loaded file.");
 			return;
 		}
 
@@ -353,6 +354,10 @@ namespace Unvirt::Context {
 		m_Ctx->SetTempPath(amap->Get<CmdHelper::StringArgument::vType>("temppath")->c_str());
 	}
 
+	void Unvirt::Context::UnvirtContext::ProcHelp(const CmdHelper::ArgumentsMap* amap) {
+		m_Help->Print();
+	}
+
 	void UnvirtContext::ProcExit(const CmdHelper::ArgumentsMap*) {
 		m_OrderExit = true;
 	}
diff --git a/Unvirt/UnvirtContext.hpp b/Unvirt/UnvirtContext.hpp
index d560b08..842add8 100644
--- a/Unvirt/UnvirtContext.hpp
+++ b/Unvirt/UnvirtContext.hpp
@@ -36,6 +36,7 @@ namespace Unvirt::Context {
 		void ProcItems(const CmdHelper::ArgumentsMap* amap);
 		void ProcEncoding(const CmdHelper::ArgumentsMap* amap);
 		void ProcTemp(const CmdHelper::ArgumentsMap* amap);
+		void ProcHelp(const CmdHelper::ArgumentsMap* amap);
 		void ProcExit(const CmdHelper::ArgumentsMap* amap);
 
 	protected: