diff --git a/MString.cpp b/MString.cpp
index f915461..4b48dd5 100644
--- a/MString.cpp
+++ b/MString.cpp
@@ -153,6 +153,16 @@ namespace coreutils {
       memcpy(data + temp, value.c_str(), value.length());
       return *this;
    }
+
+//   MString &MString::operator<<(std::ostream (*f)(std::ostream&)) {
+   MString &MString::operator<<(std::basic_ostream<char> (*pf)(std::basic_ostream<char>&)) {
+//      int temp = length;
+//      int len = length + value.length();
+//      setSize(len);
+//      memcpy(data + temp, value.c_str(), value.length());
+      std::cout << "xxx" << std::endl;
+      return *this;
+   }
    
    void MString::insert(char ch, int offset) {
       setSize(length + 1);
diff --git a/MString.h b/MString.h
index b24ae93..7413744 100644
--- a/MString.h
+++ b/MString.h
@@ -4,6 +4,7 @@
 #include "ZString.h"
 #include <iostream>
 #include <sstream>
+#include <ostream>
 
 namespace coreutils
 {
@@ -126,7 +127,9 @@ namespace coreutils
       
       MString &operator<<(const int value);
       
-      //      MString& operator<<(coreutils::ZString &zstring);
+      ///
+      ///
+      ///
       
       MString &operator<<(coreutils::ZString zstring);
 
@@ -135,6 +138,13 @@ namespace coreutils
       ///
       
       MString &operator<<(std::string value);
+
+      ///
+      ///
+      ///
+      
+//      MString &operator<<(std::ostream (*f)(std::ostream&) );
+      MString &operator<<(std::basic_ostream<char> (*pf)(std::basic_ostream<char>&));
       
       ///
       ///
diff --git a/testing/compile b/testing/compile
index 1869368..af391cf 100755
--- a/testing/compile
+++ b/testing/compile
@@ -1,4 +1,4 @@
 #!/bin/bash
 g++ -o zstring_test zstring_test.cpp -I.. -L.. -lCoreUtils
 g++ -o mstring_test mstring_test.cpp -I.. -L.. -lCoreUtils
-g++ -o jstring_test jstring_test.cpp -I.. -L.. -lCoreUtils
+#g++ -o jstring_test jstring_test.cpp -I.. -L.. -lCoreUtils
diff --git a/testing/mstring_test b/testing/mstring_test
index 5379889..4a1eda2 100755
Binary files a/testing/mstring_test and b/testing/mstring_test differ
diff --git a/testing/mstring_test.cpp b/testing/mstring_test.cpp
index 6a9987c..a258592 100644
--- a/testing/mstring_test.cpp
+++ b/testing/mstring_test.cpp
@@ -79,6 +79,9 @@ int main(int argc, char **argv) {
    test22 << test23;
    std::cout << "mstring << string: [" << test22 <<  "]" << std::endl;
 
+//   coreutils::MString test24 = std::endl;
+//   std::cout << "mstring << endl: " << test24 << std::endl;
+   
    return 0;
 }
 
diff --git a/testing/zstring_test b/testing/zstring_test
index d17a325..7d95339 100755
Binary files a/testing/zstring_test and b/testing/zstring_test differ