diff --git a/mktextdocument.cpp b/mktextdocument.cpp
index ea24fd8..2fc34ec 100644
--- a/mktextdocument.cpp
+++ b/mktextdocument.cpp
@@ -115,10 +115,19 @@ void MkTextDocument::cursorPosChangedHandle( bool hasSelection, int blockNumber,
     }
     hideMKSymbolsFromDrawingRect(rect,hasSelection,blockNumber,false, range, true);
 
+
     //1. insert raw text in new cursor blocks
+    scanShowMkSymbolsInRangeOfBlocks(range, true);
+
     //2. format texts from previous cursor blocks
+
 }
 
+void MkTextDocument::scanShowMkSymbolsInRangeOfBlocks(SelectRange * range,const bool clearPushCheckBoxData)
+{
+    //iterate from the first selected block to end selected block
+
+}
 void MkTextDocument::removeAllMkDataHandle(int blockNo)
 {
     QTextDocument::setPlainText(this->rawDocument.toPlainText());
diff --git a/mktextdocument.h b/mktextdocument.h
index 17d9dc4..5337ec9 100644
--- a/mktextdocument.h
+++ b/mktextdocument.h
@@ -228,6 +228,7 @@ public slots:
 
     void hideMKSymbolsFromDrawingRect(QRect rect,bool hasSelection, int blockNumber, bool showAll,SelectRange * const editSelectRange, const bool clearPushCheckBoxData = true);
 
+    void scanShowMkSymbolsInRangeOfBlocks(SelectRange *range, const bool clearPushCheckBoxData);
 };
 
 struct UndoData{