diff --git a/ZCppMain/ZtCLinkList.H b/ZCppMain/ZtCLinkList.H
index 42ab741..aa4ec27 100644
--- a/ZCppMain/ZtCLinkList.H
+++ b/ZCppMain/ZtCLinkList.H
@@ -1065,7 +1065,7 @@ namespace ZNsMain
             {
                 // 맨 앞에 삽입.
 
-                if(++ml_LinkSize==1)
+                if(ml_LinkSize==0)
                 {
                     mp_HeadLink = &AR_LinkNew  ;
                     mp_TailLink = &AR_LinkNew  ;
@@ -1081,10 +1081,15 @@ namespace ZNsMain
                 }/*
                 else*/
             }
+            else if(AP_LinkStd==mp_TailLink)
+            {
+                ZCLink::JoinLink(mp_TailLink, &AR_LinkNew) ;
+                ZCLink::MakeRing(mp_HeadLink, &AR_LinkNew) ;
+
+                mp_TailLink = &AR_LinkNew;
+            }
             else
             {
-                ++ml_LinkSize;
-
                 ZCLink* AP_NextStd = AP_LinkStd->mp_NextLink ;
 
                 ZCLink::JoinLink(AP_LinkStd , &AR_LinkNew);
@@ -1092,7 +1097,7 @@ namespace ZNsMain
             }/*
             else*/
 
-            return AR_LinkNew;
+            ++ml_LinkSize;  return AR_LinkNew;
         }/*
         ZCLink& JoinAfter(ZCLink& AR_LinkNew, ZCLink* AP_LinkStd)*/
 
@@ -1106,7 +1111,7 @@ namespace ZNsMain
             {
                 // 맨 뒤에 삽입.
 
-                if(++ml_LinkSize==1)
+                if(ml_LinkSize==0)
                 {
                     mp_HeadLink = &AR_LinkNew ;
                     mp_TailLink = &AR_LinkNew ;
@@ -1122,10 +1127,15 @@ namespace ZNsMain
                 }/*
                 else*/
             }
+            else if(AP_LinkStd==mp_HeadLink)
+            {
+                ZCLink::JoinLink(&AR_LinkNew, mp_HeadLink);
+                ZCLink::MakeRing(&AR_LinkNew, mp_TailLink);
+
+                mp_HeadLink = &AR_LinkNew;
+            }
             else
             {
-                ++ml_LinkSize;
-
                 ZCLink* AP_PrevStd = AP_LinkStd->mp_PrevLink ;
 
                 ZCLink::JoinLink( AP_PrevStd, &AR_LinkNew);
@@ -1133,7 +1143,7 @@ namespace ZNsMain
             }/*
             else*/
 
-            return AR_LinkNew;
+            ++ml_LinkSize;  return AR_LinkNew;
         }/*
         ZCLink& JoinBefore(ZCLink& AR_LinkNew, ZCLink* AP_LinkStd)*/
 
@@ -1274,6 +1284,93 @@ namespace ZNsMain
         }/*
         ZCLink& CutLink(ZCLink& AR_CutLink)*/
 
+
+        ZtCLinkList& CutLinkRangeOut  /*#######################################*/
+            (
+                ZCLink&       AR_CutHead ,
+                ZCLink&       AR_CutTail ,
+                TypeSize      AL_CutSize ,
+                ZtCLinkList&  rhs        ,
+                ZCLink*       AP_RhsStd
+            )
+        /*#####################################################################*/
+        {
+            /*///////////////////////////////////////////////////////////
+
+            ■  AP_CutHead 는 삭제하려는 링크의 범위의 앞의 링크.
+                AP_CutTail 은 삭제하려는 링크의 범위의 뒤의 링크.
+                AP_CutHead 의 앞과 AP_CutTail 의 뒤에서 연결 상태를 끊고,
+                rhs 의 AP_RhsStd 의 뒤에 삽입한다. AP_RhsStd==0 이면
+                맨 앞에 삽입한다.  -- 2025-10-06 09:16
+
+            ///////////////////////////////////////////////////////////*/
+
+            if(this==&rhs   ) return rhs;
+            if(ml_LinkSize<1) return rhs;
+
+            if(AL_CutSize>=ml_LinkSize) // 모든 링크를 삭제할 때.
+            {
+                mp_HeadLink=0;
+            }
+            else if(&AR_CutHead==mp_HeadLink) // 잘라내려는 링크가 처음 링크를 포함할 때.
+            {
+                ZCLink::MakeRing
+                  (mp_HeadLink=AR_CutTail.mp_NextLink, mp_TailLink);
+            }
+            else if(&AR_CutTail==mp_TailLink) // 잘라내려는 링크가 끝 링크를 포함할 때.
+            {
+                ZCLink::MakeRing(mp_HeadLink, mp_TailLink=AR_CutHead.mp_PrevLink);
+            }
+            else // 잘라내려는 링크가 처음과 끝 링크를 포함하지 않을 때.
+            {
+                ZCLink::JoinLink(AR_CutHead.mp_PrevLink, AR_CutTail.mp_NextLink);
+            }/*
+            else*/
+
+            ml_LinkSize -= AL_CutSize;
+
+
+            if(rhs.size()<1)
+            {
+                // AP_CutHead 과 AP_CutTail 을 연결하여 이중 원형 연결리스트가 되도록 한다.
+
+                ZCLink::MakeRing(&AR_CutHead, &AR_CutTail);
+
+                rhs.mp_HeadLink = &AR_CutHead ;
+                rhs.mp_TailLink = &AR_CutTail ;
+            }
+            else if(AP_RhsStd==0) // 맨 앞에 삽입.
+            {
+                ZCLink::JoinLink(&AR_CutTail, rhs.mp_HeadLink);
+                ZCLink::MakeRing(&AR_CutHead, rhs.mp_TailLink);
+
+                rhs.mp_HeadLink = &AR_CutHead;
+            }
+            else // AP_RhsStd 의 뒤에 삽입.
+            {
+                ZCLink* VP_RhsStdNext = AP_RhsStd->mp_NextLink ;
+
+                ZCLink::JoinLink(AP_RhsStd  , &AR_CutHead  );
+                ZCLink::JoinLink(&AR_CutTail, VP_RhsStdNext);
+
+                if(AP_RhsStd==rhs.mp_TailLink)
+                    { rhs.mp_TailLink = &AR_CutTail; }
+            }/*
+            else*/
+
+            rhs.ml_LinkSize += AL_CutSize;  return rhs;
+        }/*
+        ZtCLinkList& CutLinkRangeOut  ###########################################
+            (
+                ZCLink&       AR_CutHead ,
+                ZCLink&       AR_CutTail ,
+                TypeSize      AL_CutSize ,
+                ZtCLinkList&  rhs        ,
+                ZCLink*       AP_RhsStd
+            )
+        #######################################################################*/
+
+
   /*private:*/
     public :
 
@@ -1476,6 +1573,36 @@ namespace ZNsMain
         void SendOutTail(ZCLink& AR_CutLink, ZtCLinkList& rhs)*/
 
 
+        ZtCLinkList& SendRangeOutAfter //////////////////////////////////////////
+            (
+                ZCLink&       AR_CutHead,
+                ZCLink&       AR_CutTail,
+                TypeSize      AI_CutSize,
+                ZtCLinkList&  rhs       ,
+                ZCObjOpt      AO_ObjOpt
+            )
+        /*#####################################################################*/
+        {
+            // AR_CutHead 부터 AR_CutTail 까지를 잘라서 rhs 의 AR_StdLink 뒤에 연결한다.
+
+            return CutLinkRangeOut
+                (
+                    AR_CutHead, AR_CutTail, AI_CutSize, rhs,
+                    ( bool(AO_ObjOpt) ? &AO_ObjOpt.value() : 0 )
+                );
+            //////////////////////
+        }/*
+        ZtCLinkList& SendRangeOutAfter //////////////////////////////////////////
+            (
+                ZCLink&       AR_CutHead,
+                ZCLink&       AR_CutTail,
+                TypeSize      AI_CutSize,
+                ZtCLinkList&  rhs       ,
+                ZCObjOpt      AO_ObjOpt
+            )
+        /*#####################################################################*/
+
+
         template<typename TFunctor> void IterElement(TFunctor AO_Functor)
         {
             ZCLink* VP_LoopLink=mp_HeadLink;
diff --git a/ZCppMainTest/ZtCLinkList_000.cpp b/ZCppMainTest/ZtCLinkList_000.cpp
index b62c63c..46aabb6 100644
--- a/ZCppMainTest/ZtCLinkList_000.cpp
+++ b/ZCppMainTest/ZtCLinkList_000.cpp
@@ -23,6 +23,7 @@ namespace ZNsMain
             typedef ZCLinkStrList::ZCObjOpt              ZCStrLinkOpt ;
         public:
 
+
             static void ShowNode0(ZCLinkCStr& AR_CLink, ZTypLong& ARRI_CallCnt)
             {
                 ++ARRI_CallCnt;
@@ -42,6 +43,13 @@ namespace ZNsMain
             static void ShowNode1(ZCLinkCStr& AR_CLink, ZTypLong& ARRI_CallCnt)*/
 
 
+            static void AppendEach(ZCLinkCStr& AR_CLink)
+            {
+                AR_CLink().append("_");
+            }/*
+            static void AppendEach(ZCLinkCStr& AR_CLink)*/
+
+
             static int Main(int AI_ArgCnt=0, char* APP_ArgVal[]=0)
             {
                 ZTypLong      VI_CallCnt = 0 ;
@@ -106,6 +114,28 @@ namespace ZNsMain
                 cout<<"***********************************************"<<endl;
 
 
+                VO_ZCLinkStrLis1.IterElement(&AppendEach);
+                cout<<"***********************************************"<<endl;
+                VO_ZCLinkStrLis1.IterElement(&ShowNode0, ZftMCP(VI_CallCnt=0));
+                cout<<"***********************************************"<<endl;
+
+                VO_ZCLinkStrLis1.SendRangeOutAfter
+                    (
+                        VO_ZCLinkStrLis1.GetObjOpt(1).value()
+                      , VO_ZCLinkStrLis1.GetObjOpt(2).value()
+                      , 2
+                      , VO_ZCLinkStrLis2
+                      , VO_ZCLinkStrLis2.GetObjOpt(1)
+                    ) ;
+                cout<<"# after VO_ZCLinkStrLis1.SendRangeOutAfter(1th, 2th, 2, rhs, rhs's 1th)"<<endl;
+
+                cout<<"+++++++++++++++++++++++++++++++++++++++++++++++"<<endl;
+                VO_ZCLinkStrLis2.IterElement(&ShowNode0, ZftMCP(VI_CallCnt=0));
+                cout<<"***********************************************"<<endl;
+                VO_ZCLinkStrLis1.IterElement(&ShowNode0, ZftMCP(VI_CallCnt=0));
+                cout<<"***********************************************"<<endl;
+
+
                 return 0;
             }/*
             static int Main(int AI_ArgCnt=0, char* APP_ArgVal[]=0)*/