diff --git a/EGkExtText.h b/EGkExtText.h
index 4def6a1..581c327 100644
--- a/EGkExtText.h
+++ b/EGkExtText.h
@@ -50,6 +50,8 @@ class __declspec( novtable) IExtText : public IGeoObj
       virtual bool ApproxWithLines( double dLinTol, double dAngTolDeg, POLYLINELIST& lstPL) const = 0 ;
       virtual bool Flip( void) = 0 ;
       virtual bool Mir( bool bOnLen) = 0 ;
+      virtual bool ModifyText( const std::string& sText) = 0 ;
+      virtual bool ChangeFont( const std::string& sFont) = 0 ;
 } ;
 
 //-----------------------------------------------------------------------------
diff --git a/EGnStringConverter.h b/EGnStringConverter.h
index 7cd51c2..6fa13cb 100644
--- a/EGnStringConverter.h
+++ b/EGnStringConverter.h
@@ -69,15 +69,12 @@ inline void SmartFreeMemory( _CharType* pBuff, _CharType* pszFixedBuffer, int nF
 //-----------------------------------------------------------------------------
 inline bool IsTextUtf8( const char* psz)
 {
-   const unsigned char* p ;
-
-
   // validità parametro
    if ( psz == nullptr)
       return false ;
 
   // ciclo sulla stringa
-   p = ( const unsigned char*) psz ;
+   const unsigned char* p = ( const unsigned char*) psz ;
    while ( *p != '\0') {
      // caratteri ASCII
       if ( 0x00 <= p[0]  &&  p[0] <= 0x7F)
diff --git a/EGnStringDecoder.h b/EGnStringDecoder.h
index 7e58ddf..cc72f2a 100644
--- a/EGnStringDecoder.h
+++ b/EGnStringDecoder.h
@@ -71,14 +71,26 @@ CountCodePoints( const std::string& sString, int& nCount)
    nCount = 0 ;
 
   // ciclo sui byte della stringa UTF-8
+   bool bOk = true ;
    uint32_t codepoint ;
    uint32_t state = UTF8_ACCEPT ;
+   uint32_t stPrev = UTF8_ACCEPT ;
    for ( unsigned int i = 0 ; i < sString.length() ; ++ i) {
-      if ( ! decode( &state, &codepoint, sString[i]))
+      switch ( decode( &state, &codepoint, sString[i])) {
+      case UTF8_ACCEPT :
          ++ nCount ;
+         break ;
+      case UTF8_REJECT :
+         bOk = false ;
+         state = UTF8_ACCEPT ;
+         if ( stPrev != UTF8_ACCEPT)
+            -- i ;
+         break ;
+      }
+      stPrev = state ;
    }
 
-   return ( state == UTF8_ACCEPT) ;
+   return bOk ;
 }
 
 //-----------------------------------------------------------------------------
@@ -96,22 +108,21 @@ GetCodePoints( const std::string& sString, UINTVECTOR& vCode)
    uint32_t stPrev = UTF8_ACCEPT ;
    for ( unsigned int i = 0 ; i < sString.length() ; ++ i) {
 
-     switch ( decode( &state, &codepoint, sString[i])) {
-     case UTF8_ACCEPT :
-       // A properly encoded character has been found.
-       vCode.push_back( codepoint) ;
-       break ;
-     case UTF8_REJECT :
-       // The byte is invalid, replace it and restart.
-       vCode.push_back( 0xFFFD) ;
-       bOk = false ;
-       state = UTF8_ACCEPT ;
-       if ( stPrev != UTF8_ACCEPT)
-         -- i ;
-       break ;
-     }
-
-     stPrev = state ;
+      switch ( decode( &state, &codepoint, sString[i])) {
+      case UTF8_ACCEPT :
+        // A properly encoded character has been found.
+         vCode.push_back( codepoint) ;
+         break ;
+      case UTF8_REJECT :
+        // The byte is invalid, replace it and restart.
+         vCode.push_back( 0xFFFD) ;
+         bOk = false ;
+         state = UTF8_ACCEPT ;
+         if ( stPrev != UTF8_ACCEPT)
+            -- i ;
+         break ;
+      }
+      stPrev = state ;
    }
 
    return bOk ;
diff --git a/EGnStringEncoder.h b/EGnStringEncoder.h
new file mode 100644
index 0000000..6a9ebe8
--- /dev/null
+++ b/EGnStringEncoder.h
@@ -0,0 +1,49 @@
+//----------------------------------------------------------------------------
+//  EgalTech 2014-2014
+//----------------------------------------------------------------------------
+// File : EgnStringEncoder.h   Data : 08.06.14          Versione : 1.5f3
+// Contenuto : Insieme di funzioni per codificare stringhe UTF-8.
+//
+//
+//
+// Modifiche : 08.06.14 DS Creazione modulo.
+//
+//
+//----------------------------------------------------------------------------
+
+#pragma once
+
+#include "/EgtDev/Include/EGnStringConverter.h"
+#include "/EgtDev/Include/EGtNumCollection.h"
+
+//-----------------------------------------------------------------------------
+bool inline
+SetCodePoint( unsigned int nCode, std::string& sString)
+{
+   const unsigned int MAX_UNICODE = 1114111 ;
+   if ( nCode > MAX_UNICODE)
+      return false ;
+   wchar_t wsVal [2] ;
+   wsVal[0] = nCode ;
+   wsVal[1] = L'\0' ;
+   sString = LPSTR( WtoA(( wsVal))) ;
+   return true ;
+}
+
+//-----------------------------------------------------------------------------
+bool inline
+SetCodePoints( UINTVECTOR& vCode, std::string& sString)
+{
+   sString.clear() ;
+   sString.reserve( vCode.size()) ;
+   bool bOk = true ;
+   for ( size_t i = 0 ; i < vCode.size() ; ++ i) {
+      std::string sTemp ;
+      if ( SetCodePoint( vCode[i], sTemp)) {
+         sString += sTemp ;
+      }
+      else
+         bOk = false ;
+   }
+   return bOk ;
+}