diff --git a/ZCppMain/ZMainHead.H b/ZCppMain/ZMainHead.H
index 7418f7f..87284ef 100644
--- a/ZCppMain/ZMainHead.H
+++ b/ZCppMain/ZMainHead.H
@@ -5366,6 +5366,19 @@ namespace ZNsMain
             operator const TypeData&    () const{return mo_DataObjt;}
             const    TypeData& GetData  () const{return mo_DataObjt;}
             const    TypeData& operator*() const{return mo_DataObjt;}
+
+
+            ZCLink& operator+(TypeSize AL_Distance)
+              { return *GetNextPrevPtr( AL_Distance); }
+            ZCLink& operator-(TypeSize AL_Distance)
+              { return *GetNextPrevPtr(-AL_Distance); }
+
+            const ZCLink& operator+(TypeSize AL_Distance) const
+              { return *GetNextPrevPtr( AL_Distance); }
+            const ZCLink& operator-(TypeSize AL_Distance) const
+              { return *GetNextPrevPtr(-AL_Distance); }
+
+        public:
         };/*
         class ZCLink*/