Changes to MString to add insert and remove methods.

MString.h

@@ -31,7 +31,7 @@ namespace coreutils {
       MString(const char *data);
 
       ///
-      /// Consructor providing the initial setup of the ZString object.
+      /// Consructor providing the initial setup of the MString object.
       ///
 
       MString(char *data, size_t length);
@@ -104,6 +104,28 @@ namespace coreutils {
       ///
       ///
 
+      void insert(char ch, int offset);
+      void insert(ZString &value, int offset);
+      void insert(std::string value, int offset);
+
+      ///
+      ///
+      ///
+
+      void replace(char ch, int offset);
+      void replace(ZString &value, int offset);
+      void replace(std::string value, int offset);
+
+      ///
+      ///
+      ///
+
+      void remove(int offset, int length);
+      
+      ///
+      ///
+      ///
+
       MString& write(char ch);
 
       ///