diff --git a/ZCppMain/ZMainHead.H b/ZCppMain/ZMainHead.H
index 7d1f5bd..d6ff0be 100644
--- a/ZCppMain/ZMainHead.H
+++ b/ZCppMain/ZMainHead.H
@@ -5883,6 +5883,70 @@ namespace ZNsMain
         void DeleteTail()*/
 
 
+        void DeleteHead(TTypSize AL_DelSize)
+        {
+            // AL_DelSize 개의 링크를 앞 부분에서 삭제
+
+            if(ml_LinkSize<1 || AL_DelSize<1){ return; }
+
+            if(AL_DelSize > ml_LinkSize){ AL_DelSize=ml_LinkSize; }
+
+            if(AL_DelSize==ml_LinkSize)
+            {
+                RecvFreeIn
+                    (ml_LinkSize, mp_HeadLink, mp_TailLink);
+                mp_HeadLink=0 ;
+                mp_TailLink=0 ;
+                ml_LinkSize=0 ;
+
+                return;
+            }/*
+            if(AL_DelSize==ml_LinkSize)*/
+
+            ZCLink* VP_NewHead =
+                mp_HeadLink->GetNextPrevPtr( AL_DelSize ) ;
+            RecvFreeIn
+                (AL_DelSize, mp_HeadLink, VP_NewHead->mp_PrevLink);
+
+            mp_HeadLink  = VP_NewHead   ;
+            ml_LinkSize -= AL_DelSize   ;
+
+            ZCLink::MakeRing(mp_HeadLink, mp_TailLink);
+        }/*
+        void DeleteHead(TTypSize AL_DelSize)*/
+
+
+        void DeleteTail(TTypSize AL_DelSize)
+        {
+            if(ml_LinkSize==0 || AL_DelSize<1){ return; }
+
+            if(AL_DelSize> ml_LinkSize){ AL_DelSize=ml_LinkSize; }
+
+            if(AL_DelSize==ml_LinkSize)
+            {
+                RecvFreeIn
+                    (ml_LinkSize, mp_HeadLink, mp_TailLink);
+                mp_HeadLink=0 ;
+                mp_TailLink=0 ;
+                ml_LinkSize=0 ;
+
+                return;
+            }/*
+            if(AL_DelSize==ml_LinkSize)*/
+
+            ZCLink* VP_NewTail =
+                mp_TailLink->GetNextPrevPtr( -AL_DelSize ) ;
+            RecvFreeIn
+                (AL_DelSize, VP_NewTail->mp_NextLink, mp_TailLink);
+
+            mp_TailLink  = VP_NewTail ;
+            ml_LinkSize -= AL_DelSize ;
+
+            ZCLink::MakeRing(mp_HeadLink, mp_TailLink);
+        }/*
+        void DeleteTail(TTypSize AL_DelSize)*/
+
+
         ZtCBaseList& JoinAfter(ZtCBaseList& rhs, ZCLink* AP_StdLink)
         {
             // AP_StdLink 의 뒤에 rhs 를 삽입.
diff --git a/ZCppMain/ZtCObjList.H b/ZCppMain/ZtCObjList.H
index 42b8648..8b4b21c 100644
--- a/ZCppMain/ZtCObjList.H
+++ b/ZCppMain/ZtCObjList.H
@@ -1781,24 +1781,39 @@ namespace ZNsMain
         }/*
         ZtCObjList& DeleteHead()*/
 
-        ZtCObjList& DeleteHead(TypeSize AI_DeleteCnt)
+
+        void DeleteHead(TTypSize AL_DelSize)
         {
-            __for1(TypeSize, i, AI_DeleteCnt)
+            // AL_DelSize 개의 링크를 앞 부분에서 삭제
+
+            if(ml_LinkSize<1 || AL_DelSize<1){ return; }
+
+            if(AL_DelSize> ml_LinkSize){ AL_DelSize=ml_LinkSize; }
+
+            if(AL_DelSize==ml_LinkSize)
             {
-                if(this->size()<1) return *this;
+                GetCFreeHeap().RecvFreeIn
+                    (ml_LinkSize, mp_HeadLink, mp_HeadLink->mp_PrevLink);
+                mp_HeadLink=0 ;
+                ml_LinkSize=0 ;
 
-            #if(_CODE_NEW_)
-                mo_FreeObjt.RecvFreeIn
-                     ( this->CutLink(mp_HeadLink) );
-            #else
-                delete this->CutLink(mp_HeadLink)  ;
-            #endif
+                return;
             }/*
-            __for1(TypeSize, i, AI_DeleteCnt)*/
+            if(AL_DelSize==ml_LinkSize)*/
 
-            return *this;
+            ZCLink* VP_TailLink= mp_HeadLink->mp_PrevLink;
+            ZCLink* VP_NewHead = mp_HeadLink->
+                GetNextPtr( AL_DelSize );
+            GetCFreeHeap().RecvFreeIn
+                (AL_DelSize, mp_HeadLink, VP_NewHead->mp_PrevLink);
+
+            mp_HeadLink  = VP_NewHead   ;
+            ml_LinkSize -= AL_DelSize   ;
+
+            ZCLink::MakeRing(mp_HeadLink, VP_TailLink);
         }/*
-        ZtCObjList& DeleteHead(TypeSize AI_DeleteCnt)*/
+        void DeleteHead(TTypSize AL_DelSize)*/
+
 
         ZtCObjList& DeleteTail()
         {
@@ -1815,6 +1830,36 @@ namespace ZNsMain
         ZtCObjList& DeleteTail()*/
 
 
+        void DeleteTail(TTypSize AL_DelSize)
+        {
+            if(ml_LinkSize==0 || AL_DelSize<1){ return; }
+
+            if(AL_DelSize> ml_LinkSize){ AL_DelSize=ml_LinkSize; }
+
+            if(AL_DelSize==ml_LinkSize)
+            {
+                GetCFreeHeap().RecvFreeIn
+                    (ml_LinkSize, mp_HeadLink, mp_HeadLink->mp_PrevLink);
+                mp_HeadLink=0 ;
+                ml_LinkSize=0 ;
+
+                return;
+            }/*
+            if(AL_DelSize==ml_LinkSize)*/
+
+            ZCLink* VP_TailLink= mp_HeadLink->mp_PrevLink;
+            ZCLink* VP_NewTail = VP_TailLink->
+                GetPrevPtr( AL_DelSize ) ;
+            GetCFreeHeap().RecvFreeIn
+                (AL_DelSize, VP_NewTail->mp_NextLink, VP_TailLink);
+
+            ml_LinkSize -= AL_DelSize    ;
+
+            ZCLink::MakeRing(mp_HeadLink, VP_NewTail);
+        }/*
+        void DeleteTail(TTypSize AL_DelSize)*/
+
+
         ZCLink* AddDefault(TypeSize AL_DefaultSize, TypeSize AL_AddPos)
         {
             const bool CB_IsTrue = ///////////////////
diff --git a/ZCppMain/ZtCSimList.H b/ZCppMain/ZtCSimList.H
index a64cd4f..29cf1af 100644
--- a/ZCppMain/ZtCSimList.H
+++ b/ZCppMain/ZtCSimList.H
@@ -1813,35 +1813,6 @@ namespace ZNsMain
         }/*
         void DeleteTail()*/
 
-        void DeleteTail(TTypSize AL_DelSize)
-        {
-            if(ml_LinkSize==0 || AL_DelSize<1){ return; }
-
-            if(AL_DelSize> ml_LinkSize){ AL_DelSize=ml_LinkSize; }
-
-            if(AL_DelSize==ml_LinkSize)
-            {
-                GetCFreeHeap().RecvFreeIn
-                    (ml_LinkSize, mp_HeadLink, mp_TailLink);
-                mp_HeadLink=0 ;
-                mp_TailLink=0 ;
-                ml_LinkSize=0 ;
-
-                return;
-            }/*
-            if(AL_DelSize==ml_LinkSize)*/
-
-            ZCLink* VP_NewTail= mp_TailLink->
-                GetNextPtr( -AL_DelSize );
-            GetCFreeHeap().RecvFreeIn
-                (AL_DelSize, VP_NewTail->mp_NextLink, mp_TailLink);
-
-            mp_TailLink  = VP_NewTail    ;
-            ml_LinkSize -= AL_DelSize    ;
-
-            ZCLink::MakeRing(mp_HeadLink, mp_TailLink);
-        }/*
-        void DeleteTail(TTypSize AL_DelSize)*/
 
         void Delete(ZCLink* AP_PrevLink, ZCLink* AP_CutLink)
         {
diff --git a/ZCppMainTest/ZtCBaseList_000.cpp b/ZCppMainTest/ZtCBaseList_000.cpp
index 35f5c9e..287b40e 100644
--- a/ZCppMainTest/ZtCBaseList_000.cpp
+++ b/ZCppMainTest/ZtCBaseList_000.cpp
@@ -367,9 +367,10 @@ namespace ZNsMain
                 VO_ZCBaseListEx10_2.IterElemRev(&ShowDataInNode);
 
 
-                VO_ZCBaseListEx10_2.DeleteTail();
+                cout<<endl<<"# VO_ZCBaseListEx10_2 : DeleteTail(2)"<<endl<<endl;
 
-                cout<<endl<<"# VO_ZCBaseListEx10_2 : DeleteTail()"<<endl<<endl;
+                VO_ZCBaseListEx10_2.DeleteTail(2);
+                VO_ZCBaseListEx10_2.IterElemRev(&ShowDataInNode);
 
                 return 0;
             }/*