diff --git a/File.cpp b/File.cpp
index e56e512..a66b4eb 100644
--- a/File.cpp
+++ b/File.cpp
@@ -27,6 +27,10 @@ namespace coreutils {
       }
    }
 
+   File::File(coreutils::ZString &fileName, int mode, int authority) {
+      File(fileName.str(), mode, authority);
+   }   
+
    File::~File() {
       close(fd);
       setBufferSize(0);
diff --git a/File.h b/File.h
index 49fc6bc..1535ad3 100644
--- a/File.h
+++ b/File.h
@@ -3,6 +3,7 @@
 
 #include <string>
 #include <fcntl.h>
+#include "ZString.h"
 
 ///
 /// File
@@ -16,6 +17,7 @@ namespace coreutils {
 
     public:
       File(std::string fileName, int mode = O_RDONLY, int authority = 0664);
+      File(ZString &fileName, int mode = O_RDONLY, int authority = 0664);
       ~File();
       void setBufferSize(size_t size);
       void read();
diff --git a/MString.cpp b/MString.cpp
index 88104bd..32a18fe 100644
--- a/MString.cpp
+++ b/MString.cpp
@@ -47,6 +47,15 @@ namespace coreutils {
       if(data)
 	free(data);
    }
+
+   MString& MString::operator=(coreutils::ZString& value) {
+      if(*this == value)
+	return *this;
+      int len = length;
+      setSize(length + value.getLength());
+      memcpy(data + len, value.getData(), value.getLength());
+      return *this;            
+   }
    
    int MString::write(char ch) {
       setSize(length + 1);
diff --git a/MString.h b/MString.h
index 26a59e3..1773714 100644
--- a/MString.h
+++ b/MString.h
@@ -7,7 +7,9 @@ namespace coreutils {
 
    ///
    /// Use the MString object when you need a permanent backing store on the heap 
-   /// for a ZString style functionality.
+   /// for a ZString style functionality. Because MString has a backing store we
+   /// added functionalities to build strings as well as the parsing power of the
+   /// ZString.
    ///
    
    class MString : public ZString {
@@ -48,8 +50,22 @@ namespace coreutils {
 
       ~MString();
 
+      ///
+      /// Assignment operator will copy data to backing store.
+      ///
+
+      MString& operator=(coreutils::ZString& data);
+
+      ///
+      ///
+      ///
+      
       int write(char ch);
 
+      ///
+      ///
+      ///
+      
       int write(ZString &value);
       
     private:
diff --git a/ZString.cpp b/ZString.cpp
index 6a4d0b9..d5ee756 100644
--- a/ZString.cpp
+++ b/ZString.cpp
@@ -46,6 +46,11 @@ namespace coreutils {
       cursor = (char *)data.c_str();
    }
 
+   ZString::~ZString() {
+      if(cdata)
+	free(cdata);
+   }   
+   
    bool ZString::operator<(const ZString &valuex) const {
       return (strncmp(cursor, valuex.cursor, (valuex.length <= length ? valuex.length : length)) < 0);
    }
@@ -101,24 +106,30 @@ namespace coreutils {
       return std::string(data, len);
    }
 
+   char* ZString::c_str() {
+      cdata = (char *)malloc(length + 1);
+      strncpy(cdata, data, length);
+      cdata[length] = '\0';
+      return cdata;
+   }   
+   
    std::vector<ZString> &ZString::split(std::string delimiter, size_t maxSize)
    {
       coreutils::ZString zDelimiter((char *)delimiter.c_str(), delimiter.size());
       return split(zDelimiter, maxSize);
    }
 
-   std::vector<ZString> &ZString::split(ZString &delimiter, size_t maxSize)
-   {
+   std::vector<ZString> &ZString::split(ZString &delimiter, size_t maxSize) {	   
       list.clear();
       if (length == 0) {
          list.push_back(ZString(""));
          return list;
       }
-
+      maxSize = maxSize == 0 ? 255: maxSize;
       char *end = data + length;
       char *pos = cursor;
       while ((pos + delimiter.getLength()) <= end) {
-         if ((strncmp(pos, delimiter.getData(), delimiter.getLength()) == 0) && (maxSize > 0))
+         if ((strncmp(pos, delimiter.getData(), delimiter.getLength()) == 0) && (maxSize != 0))
          {
             list.push_back(ZString(cursor, pos - cursor));
             cursor = pos + delimiter.getLength();
diff --git a/ZString.h b/ZString.h
index 07f769d..629dd9f 100644
--- a/ZString.h
+++ b/ZString.h
@@ -67,6 +67,12 @@ namespace coreutils {
 
       ZString(std::string string);
 
+      ///
+      /// Destructor for the ZString.
+      ///
+
+      ~ZString();
+      
       ///
       /// A friend method used to write the value of the ZString from the cursor
       /// point to an ostream using the << syntax.
@@ -131,6 +137,12 @@ namespace coreutils {
       ///
       ///
 
+      char* c_str();
+      
+      ///
+      ///
+      ///
+
       std::vector<ZString> &split(ZString &delimiter, size_t maxSize = 0);
 
       ///
@@ -293,6 +305,7 @@ namespace coreutils {
       char *data;
       char *cursor;
       size_t length;
+      char *cdata = NULL;
 
     private:
       std::vector<ZString> list;
diff --git a/testing/zstring_test b/testing/zstring_test
index cce96fb..67b85d5 100755
Binary files a/testing/zstring_test and b/testing/zstring_test differ