diff --git a/version0.5/nasal_interpreter.cpp b/version0.5/nasal_interpreter.cpp
index 4e6b6ec..ecbb47a 100644
--- a/version0.5/nasal_interpreter.cpp
+++ b/version0.5/nasal_interpreter.cpp
@@ -12,13 +12,13 @@ int main()
 		if(command=="help")
 		{
 			std::cout<<">> nasal script by ValKmjolnir"<<std::endl;
-			std::cout<<">> 1.         |input file name to run the lexer."<<std::endl;
+			std::cout<<">> 1.         |input file name to run the lexer. (-lexer)"<<std::endl;
 			std::cout<<">> 2. \"cls\"   |clear the screen."<<std::endl;
 			std::cout<<">> 3. \"exit\"  |shut down the program."<<std::endl;
 			std::cout<<">> 4. \"lexer\" |see tokens in stack."<<std::endl;
-			std::cout<<">> 5. \"parser\"|run parser."<<std::endl;
+			std::cout<<">> 5. \"parser\"|run parser. (-parser)"<<std::endl;
 			std::cout<<">> 6. \"del\"   |delete all elements in stack."<<std::endl;
-			std::cout<<">> 7. \"run\"   |run the programme in stack."<<std::endl;
+			std::cout<<">> 7. \"run\"   |run the programme in stack. (-lexer -parser)"<<std::endl;
 			std::cout<<">> 8. \"rs\"    |check the source program."<<std::endl;
 		}
 		else if(command=="cls")
@@ -42,6 +42,7 @@ int main()
 			nasal::nasal_parse.stack_set_empty();
 			nasal::nasal_var_stack.delete_all();
 			nasal::nasal_func_stack.delete_all();
+			std::cout<<">>[Delete] Complete."<<std::endl;
 		}
 		else if(command=="parser")
 		{
diff --git a/version0.5/nasal_lexer.h b/version0.5/nasal_lexer.h
index 21b02f0..29140ad 100644
--- a/version0.5/nasal_lexer.h
+++ b/version0.5/nasal_lexer.h
@@ -243,7 +243,7 @@ void RunProcess(std::string &FileName)
 	std::ifstream fin(FileName);
 	if(fin.fail())
 	{
-		std::cout<<"[Error] Failed to load file: "<<FileName<<std::endl;
+		std::cout<<">>[Error] Failed to load file: "<<FileName<<std::endl;
 		fin.close();
 		return;
 	}
@@ -261,7 +261,7 @@ void RunProcess(std::string &FileName)
 			nasal_lexer.append(line,Syn,token);
 	}
 	//nasal_lexer.print(); //for debug mode
-	std::cout<<">> Complete scanning \""<<FileName<<"\"."<<std::endl;
+	std::cout<<">>[Lexer] Complete scanning \""<<FileName<<"\"."<<std::endl;
 	return;
 }
 
diff --git a/version0.5/nasal_parse.h b/version0.5/nasal_parse.h
index 968c0b2..d316d5f 100644
--- a/version0.5/nasal_parse.h
+++ b/version0.5/nasal_parse.h
@@ -1381,7 +1381,7 @@ void parse::print_error()
 	}
 	if(!temp_stack.empty())
 	{
-		std::cout<<">>[Error]: Parse error."<<std::endl;
+		std::cout<<">>[Error] Parse error."<<std::endl;
 		while(!temp_stack.empty())
 		{
 			int l=temp_stack.top().line;
@@ -1398,7 +1398,7 @@ void parse::print_error()
 		}
 	}
 	else
-		std::cout<<">> Parse analysis complete."<<std::endl;
+		std::cout<<">>[Parser] Parse analysis complete."<<std::endl;
 	return;
 }