diff --git a/ZCppMain/ZMainHead.H b/ZCppMain/ZMainHead.H
index 26367a7..755f750 100644
--- a/ZCppMain/ZMainHead.H
+++ b/ZCppMain/ZMainHead.H
@@ -6421,6 +6421,9 @@ namespace ZNsMain
               return GetChildObj().size_free();
           }
 
+        bool IsEmpty() const{return ml_LinkSize<1;}
+        bool empty  () const{return ml_LinkSize<1;}
+
 
         void push_front(TypeArg AO_ArgData){AddHead(AO_ArgData);}
         void push_back (TypeArg AO_ArgData){AddTail(AO_ArgData);}
diff --git a/ZCppMain/ZtCLinkList.H b/ZCppMain/ZtCLinkList.H
index 16809ed..5e58e59 100644
--- a/ZCppMain/ZtCLinkList.H
+++ b/ZCppMain/ZtCLinkList.H
@@ -1557,6 +1557,7 @@ namespace ZNsMain
         TypeSize size   () const{return ml_LinkSize  ;}
 
         bool     IsEmpty() const{return ml_LinkSize<1;}
+        bool     empty  () const{return ml_LinkSize<1;}
 
 
         void DeleteAll()
@@ -2352,6 +2353,7 @@ namespace ZNsMain
         TypeSize size   () const{return ml_LinkSize  ;}
 
         bool     IsEmpty() const{return ml_LinkSize<1;}
+        bool     empty  () const{return ml_LinkSize<1;}
 
 
         void DeleteAll()
diff --git a/ZCppMain/ZtCObjList.H b/ZCppMain/ZtCObjList.H
index fcc842c..77e2def 100644
--- a/ZCppMain/ZtCObjList.H
+++ b/ZCppMain/ZtCObjList.H
@@ -1552,11 +1552,8 @@ namespace ZNsMain
         ZtCObjList& operator=(const ZtCObjList& rhs)*/
 
 
-        bool IsEmpty() const
-        {
-            return mp_HeadLink==0 ;
-        }/*
-        bool IsEmpty() const*/
+        bool IsEmpty() const{ return mp_HeadLink==0 ; }
+        bool empty  () const{ return mp_HeadLink==0 ; }
 
 
         TypeSize GetSize () const{return ml_LinkSize;}
diff --git a/ZCppMain/ZtCSimList.H b/ZCppMain/ZtCSimList.H
index 9394c5a..c4ae174 100644
--- a/ZCppMain/ZtCSimList.H
+++ b/ZCppMain/ZtCSimList.H
@@ -1228,17 +1228,10 @@ namespace ZNsMain
                 { DeleteAll(); }
             if(rhs.ml_LinkSize== 0   ){return *this;}
 
-        #if(_CODE_NEW_)
-            CopyLink(rhs.mp_HeadLink, rhs.ml_LinkSize-1, *this);  return *this;
-        #else
-            ZtCSimList VO_StoreList;
+            CopyLink
+                (rhs.mp_HeadLink, rhs.ml_LinkSize-1, *this);
 
-            JoinHead ///////////////////////////
-                (
-                    CopyLink(rhs.mp_HeadLink, rhs.ml_LinkSize-1, VO_StoreList)
-                );
-            return *this; //////////////////////
-        #endif
+            return *this;
         }/*
         ZtCSimList& operator=(const ZtCSimList& rhs)*/
 
@@ -1257,46 +1250,15 @@ namespace ZNsMain
 
         TType& operator[](TTypSize AL_Index)
         {
-        #ifdef _DEBUG
-
-            if(AL_Index<1 || AL_Index>ml_LinkSize)
-            {
-                std::fstream fileout("DEBUG.txt",std::ios::out | std::ios::app);
-                fileout<<std::endl<<"File : "<<__FILE__<<std::endl<<"Line : "<<__LINE__<<std::endl;
-                fileout<<"Error IN TType& ZtCSimList::TType& operator[](TTypSize AL_Index)"<<std::endl;
-                fileout<<"      Parameter is Bad AL_Index"<<std::endl;
-                fileout.close();
-
-                exit(1);
-            }/*
-            if(AL_Index<1 || AL_Index>ml_LinkSize)*/
-
-        #endif //_DEBUG
-
             return GetLinkPtr(AL_Index)->mo_DataObjt;
         }/*
         TType& operator[](TTypSize AL_Index)*/
 
         const TType& operator[](TTypSize AL_Index) const
         {
-        #ifdef _DEBUG
-
-            if(AL_Index<1 || AL_Index>ml_LinkSize)
-            {
-                std::fstream fileout("DEBUG.txt",std::ios::out | std::ios::app);
-                fileout<<std::endl<<"File : "<<__FILE__<<std::endl<<"Line : "<<__LINE__<<std::endl;
-                fileout<<"Error IN const TType& ZtCSimList::TType& operator[](TTypSize AL_Index) const"<<std::endl;
-                fileout<<"      Parameter is Bad AL_Index"<<std::endl;
-                fileout.close();
-                exit(1);
-            }/*
-            if(AL_Index<1 || AL_Index>ml_LinkSize)*/
-
-        #endif //_DEBUG
-
             return GetLinkPtr(AL_Index)->mo_DataObjt;
-        }
-      //const TType& operator[](TTypSize AL_Index) const
+        }/*
+        const TType& operator[](TTypSize AL_Index) const*/
 
 
         operator TType&(){return AddTailDef()->mo_DataObjt;}
@@ -1313,14 +1275,11 @@ namespace ZNsMain
         {
             ZCLink* VP_AddLink = GetCFreeHeap().SendFreeOut()  ;
 
-        #if(_CODE_NEW_)
             if(TypeMoveObj::ZEUseMoveObj>0) ////////////////////
             {
                 TypeMoveObj::Exec(VP_AddLink->mo_DataObjt, AR_Type);
             }
-            else ///////////////////////////////////////////////
-        #endif
-            VP_AddLink->mo_DataObjt= AR_Type ;
+            /*::::::::::::::::::::::::::::::::::::::::::::::::*/
 
             if(++ml_LinkSize==1) // ml_LinkSize==0
             {
@@ -1339,43 +1298,43 @@ namespace ZNsMain
         }/*
         void AddHead(TypeArg AR_Type)*/
 
-        ZCLink* AddHeadDef()
+        ZCLink& AddHeadDef()
         {
             ZCLink* VP_AddLink=GetCFreeHeap().SendFreeOut();
 
             if(++ml_LinkSize==1) // ml_LinkSize==0
             {
-                mp_HeadLink =
-                mp_TailLink = VP_AddLink ;
+                mp_HeadLink = mp_TailLink = VP_AddLink ;
             }
             else
             {
-                ZCLink::JoinLink(VP_AddLink, mp_HeadLink);
+                ZCLink::JoinLink
+                    (VP_AddLink, mp_HeadLink);
 
                 mp_HeadLink = VP_AddLink ;
             }
-            ZCLink::MakeRing(mp_HeadLink, mp_TailLink);
+
+            ZCLink::MakeRing
+                (mp_HeadLink, mp_TailLink);
+
+            return *VP_AddLink;
         }/*
-        ZCLink* AddHeadDef()*/
+        ZCLink& AddHeadDef()*/
 
 
         void AddTail(TypeArg AR_Type)
         {
             ZCLink* VP_AddLink = GetCFreeHeap().SendFreeOut();
 
-        #if(_CODE_NEW_)
-            if(TypeMoveObj::ZEUseMoveObj>0) ////////////////////
+            if(TypeMoveObj::ZEUseMoveObj>0) //::::::::::::::::
             {
                 TypeMoveObj::Exec(VP_AddLink->mo_DataObjt, AR_Type);
             }
-            else ///////////////////////////////////////////////
-        #endif
-            VP_AddLink->mo_DataObjt= AR_Type ;
+            /*::::::::::::::::::::::::::::::::::::::::::::::*/
 
             if(++ml_LinkSize==1) // ml_LinkSize==0
             {
-                mp_HeadLink =
-                mp_TailLink = VP_AddLink ;
+                mp_HeadLink = mp_TailLink = VP_AddLink ;
             }
             else
             {
@@ -1395,16 +1354,20 @@ namespace ZNsMain
 
             if(++ml_LinkSize==1) // ml_LinkSize==0
             {
-                mp_HeadLink =
-                mp_TailLink = VP_AddLink ;
+                mp_HeadLink = mp_TailLink = VP_AddLink ;
             }
             else
             {
-                ZCLink::JoinLink(mp_TailLink, VP_AddLink);
+                ZCLink::JoinLink
+                    (mp_TailLink, VP_AddLink);
 
                 mp_TailLink = VP_AddLink ;
             }
-            ZCLink::MakeRing(mp_HeadLink, mp_TailLink);
+
+            ZCLink::MakeRing
+                (mp_HeadLink, mp_TailLink);
+
+            return *VP_AddLink;
         }/*
         ZCLink* AddTailDef()*/
 
@@ -1473,42 +1436,12 @@ namespace ZNsMain
 
         TType& GetHeadData()
         {
-        #ifdef _DEBUG
-
-            if(mp_HeadLink==0)
-            {
-                std::fstream fileout("DEBUG.txt",std::ios::out | std::ios::app);
-                fileout<<std::endl<<"File : "<<__FILE__<<std::endl<<"Line : "<<__LINE__<<std::endl;
-                fileout<<"Error IN TType& ZtCSimList::GetHeadData()"<<std::endl;
-                fileout<<"      mp_HeadLink Pointer is NULL"<<std::endl;
-                fileout.close();
-                exit(1);
-            }/*
-            if(mp_HeadLink==0)*/
-
-        #endif //_DEBUG
-
             return mp_HeadLink->mo_DataObjt;
         }/*
         TType& GetHeadData()*/
 
         const TType& GetHeadData() const
         {
-        #ifdef _DEBUG
-
-            if(mp_HeadLink==0)
-            {
-                std::fstream fileout("DEBUG.txt",std::ios::out | std::ios::app);
-                fileout<<std::endl<<"File : "<<__FILE__<<std::endl<<"Line : "<<__LINE__<<std::endl;
-                fileout<<"Error IN const TType& ZtCSimList::GetHeadData() const"<<std::endl;
-                fileout<<"      mp_HeadLink Pointer is NULL"<<std::endl;
-                fileout.close();
-                exit(1);
-            }/*
-            if(mp_HeadLink==0)*/
-
-        #endif //_DEBUG
-
             return mp_HeadLink->mo_DataObjt;
         }/*
         const TType& GetHeadData() const*/
@@ -1516,42 +1449,12 @@ namespace ZNsMain
 
         TType& GetTailData()
         {
-        #ifdef _DEBUG
-
-            if(mp_TailLink==0)
-            {
-                std::fstream fileout("DEBUG.txt",std::ios::out | std::ios::app);
-                fileout<<std::endl<<"File : "<<__FILE__<<std::endl<<"Line : "<<__LINE__<<std::endl;
-                fileout<<"Error IN const TType& ZtCSimList::GetTailData() const"<<std::endl;
-                fileout<<"      mp_TailLink Pointer is NULL"<<std::endl;
-                fileout.close();
-                exit(1);
-            }/*
-            if(mp_TailLink==0)*/
-
-        #endif //_DEBUG
-
             return mp_TailLink->mo_DataObjt ;
         }/*
         TType& GetTailData()*/
 
         const TType& GetTailData() const
         {
-        #ifdef _DEBUG
-
-            if(mp_TailLink==0)
-            {
-                std::fstream fileout("DEBUG.txt",std::ios::out | std::ios::app);
-                fileout<<std::endl<<"File : "<<__FILE__<<std::endl<<"Line : "<<__LINE__<<std::endl;
-                fileout<<"Error IN const TType& ZtCSimList::GetTailData() const"<<std::endl;
-                fileout<<"      mp_TailLink Pointer is NULL"<<std::endl;
-                fileout.close();
-                exit(1);
-            }/*
-            if(mp_TailLink==0)*/
-
-        #endif //_DEBUG
-
             return mp_TailLink->mo_DataObjt ;
         }/*
         const TType& GetTailData() const*/
@@ -1559,42 +1462,12 @@ namespace ZNsMain
 
         TType& GetData(TTypSize AL_Index)
         {
-        #ifdef _DEBUG
-
-            if(AL_Index<1 || AL_Index>ml_LinkSize)
-            {
-                std::fstream fileout("DEBUG.txt",std::ios::out | std::ios::app);
-                fileout<<std::endl<<"File : "<<__FILE__<<std::endl<<"Line : "<<__LINE__<<std::endl;
-                fileout<<"Error IN TType& ZtCSimList::GetData(TTypSize AL_Index)"<<std::endl;
-                fileout<<"      Parameter is Bad AL_Index"<<std::endl;
-                fileout.close();
-                exit(1);
-            }/*
-            if(AL_Index<1 || AL_Index>ml_LinkSize)*/
-
-        #endif //_DEBUG
-
             return GetLinkPtr(AL_Index)->mo_DataObjt;
         }/*
         TType& GetData(TTypSize AL_Index)*/
 
         TType GetData(TTypSize AL_Index) const
         {
-        #ifdef _DEBUG
-
-            if(AL_Index<1 || AL_Index>ml_LinkSize)
-            {
-                std::fstream fileout("DEBUG.txt",std::ios::out | std::ios::app);
-                fileout<<std::endl<<"File : "<<__FILE__<<std::endl<<"Line : "<<__LINE__<<std::endl;
-                fileout<<"Error IN TType& ZtCSimList::GetData(TTypSize AL_Index)"<<std::endl;
-                fileout<<"      Parameter is Bad AL_Index"<<std::endl;
-                fileout.close();
-                exit(1);
-            }/*
-            if(AL_Index<1 || AL_Index>ml_LinkSize)*/
-
-        #endif //_DEBUG
-
             return GetLinkPtr(AL_Index)->mo_DataObjt;
         }/*
         TType GetData(TTypSize AL_Index) const*/
@@ -1602,27 +1475,6 @@ namespace ZNsMain
 
         void JoinHead(ZCLink* AP_Link)
         {
-        #ifdef _DEBUG
-    
-            if(AP_Link==0)
-            {
-                std::fstream fileout("DEBUG.txt",std::ios::out | std::ios::app);
-                fileout<<std::endl<<"File : "<<__FILE__<<std::endl<<"Line : "<<__LINE__<<std::endl;
-                fileout<<"Error In 'void JoinHead(ZCLink* AP_Link)' : Parameter is null pointer"<<std::endl;
-                fileout.close();
-                exit(1);
-            }
-            else if(Find(AP_Link)!=0) // AP_Link 가 this 가 가리키는 연결리스트에 존재하는 링크인가.
-            {
-                std::fstream fileout("DEBUG.txt",std::ios::out | std::ios::app);
-                fileout<<"Error In 'void JoinHead(ZCLink* AP_Link)' : The list that parameter link belongs to is now list"<<std::endl;
-                fileout.close();
-                exit(1);
-            }/*
-            else if(Find(AP_Link)!=0)*/
-
-        #endif //_DEBUG
-    
             if(mp_HeadLink==0)
             {
                 mp_HeadLink = mp_TailLink = AP_Link ;
@@ -1639,28 +1491,6 @@ namespace ZNsMain
 
         void JoinTail(ZCLink* AP_Link)
         {
-        #ifdef _DEBUG
-    
-            if(AP_Link==0)
-            {
-                std::fstream fileout("DEBUG.txt",std::ios::out | std::ios::app);
-                fileout<<std::endl<<"File : "<<__FILE__<<std::endl<<"Line : "<<__LINE__<<std::endl;
-                fileout<<"Error In 'void JoinTail(ZCLink* AP_Link)' : Parameter is null pointer"<<std::endl;
-                fileout.close();
-                exit(1);
-            }
-            else if(Find(AP_Link)!=0)
-            {
-                std::fstream fileout("DEBUG.txt",std::ios::out | std::ios::app);
-                fileout<<std::endl<<"File : "<<__FILE__<<std::endl<<"Line : "<<__LINE__<<std::endl;
-                fileout<<"Error In 'void JoinTail(ZCLink* AP_Link)' : The list that parameter link belongs to is now list"<<std::endl;
-                fileout.close();
-                exit(1);
-            }/*
-            else if(Find(AP_Link)!=0)*/
-
-        #endif //_DEBUG
-
             if(mp_HeadLink==0)
             {
                 mp_HeadLink =
@@ -1778,11 +1608,16 @@ namespace ZNsMain
 
             ZCLink* VP_NewHead= mp_HeadLink->
                 GetNextPtr( AL_DelSize );
-            GetCFreeHeap().RecvFreeIn
-                (AL_DelSize, mp_HeadLink, VP_NewHead->mp_PrevLink);
+            GetCFreeHeap().RecvFreeIn ////////////
+                (
+                    AL_DelSize  ,
+                    mp_HeadLink ,
+                    VP_NewHead->mp_PrevLink
+                );
+            //////////////////////////////////////
 
-            mp_HeadLink  = VP_NewHead   ;
-            ml_LinkSize -= AL_DelSize   ;
+            mp_HeadLink  = VP_NewHead ;
+            ml_LinkSize -= AL_DelSize ;
 
             ZCLink::MakeRing(mp_HeadLink, mp_TailLink);
         }/*
@@ -1816,20 +1651,6 @@ namespace ZNsMain
 
         void Delete(ZCLink* AP_PrevLink, ZCLink* AP_CutLink)
         {
-        #ifdef _DEBUG
-            if  ( Find(AP_CutLink)==0     ||
-                  Find(AP_CutLink)!=Find(AP_PrevLink)+1
-                )
-            {
-                std::fstream fileout("DEBUG.txt",std::ios::out | std::ios::app);
-                fileout<<std::endl<<"File : "<<__FILE__<<std::endl<<"Line : "<<__LINE__<<std::endl;
-                fileout<<"Error In 'void Delete(ZCLink* AP_PrevLink, ZCLink* AP_CutLink)' : Parameter is Bad Pointer"<<std::endl;
-                fileout.close();
-
-                exit(1);
-            }
-        #endif //_DEBUG
-
             GetCFreeHeap().RecvFreeIn
                 ( CutLink(AP_PrevLink, AP_CutLink) );
         }/*
@@ -1837,21 +1658,6 @@ namespace ZNsMain
 
         void Delete(ZCLink* AP_PrevLink, ZCLink* AP_CutLink, TTypSize AL_CutPos)
         {
-        #ifdef _DEBUG
-            if  ( ml_LinkSize==0 ||
-                  Find(AP_CutLink) !=AL_CutPos ||
-                  Find(AP_PrevLink)!=(AL_CutPos-1)
-                )
-            {
-                std::fstream fileout("DEBUG.txt",std::ios::out | std::ios::app);
-                fileout<<std::endl<<"File : "<<__FILE__<<std::endl<<"Line : "<<__LINE__<<std::endl;
-                fileout<<"Error In 'void Delete(ZCLink* AP_PrevLink, ZCLink* AP_CutLink, TTypSize AL_CutPos)' : Parameter is Bad Pointer or Bad AL_Index"<<std::endl;
-                fileout.close();
-
-                exit(1);
-            }
-        #endif //_DEBUG
-
             GetCFreeHeap().RecvFreeIn
                 ( CutLink(AP_PrevLink, AP_CutLink, AL_CutPos) );
         }/*
@@ -1865,26 +1671,6 @@ namespace ZNsMain
             )
         /*###############################################*/
         {
-        #ifdef _DEBUG
-
-            if  ( ml_LinkSize==0                  ||
-                  AL_CutHeadPos>AL_CutTailPos     ||
-                  Find(AP_CutHead)!=AL_CutHeadPos ||
-                  Find(AP_CutTail)!=AL_CutTailPos ||
-                  (AL_CutHeadPos!=1 && AP_CutHeadPrev->mp_NextLink!=AP_CutHead)
-                )
-            {
-                std::fstream fileout("DEBUG.txt",std::ios::out | std::ios::app);
-                fileout<<std::endl<<"File : "<<__FILE__<<std::endl<<"Line : "<<__LINE__<<std::endl;
-                fileout<<"Error In 'void Delete(ZCLink* AP_CutHeadPrev,ZCLink* AP_CutHead,TTypSize AL_CutHeadPos,ZCLink* AP_CutTail,TTypSize AL_CutTailPos)' : Parameter is Bad Pointer or Bad AL_Index"<<std::endl;
-                fileout.close();
-
-                exit(1);
-            }
-            /*////////////////////////////////////////////////////////////////*/
-
-        #endif //_DEBUG
-
             ZtCSimList  VO_StoreList;
 
             CutLink /*==========================================*/
@@ -2007,21 +1793,6 @@ namespace ZNsMain
 
         ZCLink* GetLinkPtr(TTypSize AL_Index)
         {
-        #ifdef _DEBUG
-
-            if(AL_Index<1 || AL_Index>ml_LinkSize)
-            {
-                std::fstream fileout("DEBUG.txt",std::ios::out | std::ios::app);
-                fileout<<std::endl<<"File : "<<__FILE__<<std::endl<<"Line : "<<__LINE__<<std::endl;
-                fileout<<"Error In 'ZCLink* GetLinkPtr(TTypSize AL_Index)' : Parameter is Bad AL_Index(AL_Index="<<AL_Index<<")"<<std::endl;
-                fileout.close();
-
-                exit(1);
-            }/*
-            if(AL_Index<1 || AL_Index>ml_LinkSize)*/
-
-        #endif //_DEBUG
-
             return mp_HeadLink->GetNextPtr(AL_Index-1);
         }/*
         ZCLink* GetLinkPtr(TTypSize AL_Index)*/
@@ -2029,21 +1800,6 @@ namespace ZNsMain
 
         const ZCLink* GetLinkPtr(TTypSize AL_Index) const
         {
-        #ifdef _DEBUG
-
-            if(AL_Index<1 || AL_Index>ml_LinkSize)
-            {
-                std::fstream fileout("DEBUG.txt",std::ios::out | std::ios::app);
-                fileout<<std::endl<<"File : "<<__FILE__<<std::endl<<"Line : "<<__LINE__<<std::endl;
-                fileout<<"Error In 'const ZCLink* GetLinkPtr(TTypSize AL_Index) const' : Parameter is Bad AL_Index(AL_Index="<<AL_Index<<")"<<std::endl;
-                fileout.close();
-
-                exit(1);
-            }/*
-            if(AL_Index<1 || AL_Index>ml_LinkSize)*/
-
-        #endif //_DEBUG
-
             return mp_HeadLink->GetNextPtr(AL_Index-1);
         }/*
         const ZCLink* GetLinkPtr(TTypSize AL_Index) const*/
@@ -2070,11 +1826,8 @@ namespace ZNsMain
             { return mo_FreeObjt.size(); }
 
 
-        inline bool IsEmpty() const
-        {
-            return mp_HeadLink==0;
-        }/*
-        inline bool IsEmpty() const*/
+        inline bool IsEmpty() const{ return mp_HeadLink==0; }
+        inline bool empty  () const{ return mp_HeadLink==0; }