diff --git a/EGkGdbConst.h b/EGkGdbConst.h
index cf8ae7d..aecf09e 100644
--- a/EGkGdbConst.h
+++ b/EGkGdbConst.h
@@ -1,7 +1,7 @@
 //----------------------------------------------------------------------------
-//  EgalTech 2013-2013
+//  EgalTech 2013-2014
 //----------------------------------------------------------------------------
-// File : EgkGdbConst.h           Data : 04.12.13          Versione : 1.4a3
+// File : EgkGdbConst.h           Data : 17.06.14          Versione : 1.5f5
 // Contenuto : Costanti generali per DB geometrico.       
 //
 //
@@ -21,6 +21,11 @@ const int GDB_BEFORE = -1 ;
 const int GDB_SON = 0 ;
 const int GDB_AFTER = +1 ;
 
+//----------------- Costanti tipo salvataggio del DB geometrico ----------------
+enum GdbSave { GDB_SV_TXT =  0,
+               GDB_SV_BIN =  1,
+               GDB_SV_CMPTXT = 2} ;
+
 //----------------- Costanti tipo oggetti del DB geometrico --------------------
 enum GdbType { GDB_TY_NONE =  0,
                GDB_TY_GEO =   1,
diff --git a/EGkGeomDB.h b/EGkGeomDB.h
index f3108f8..df19d64 100644
--- a/EGkGeomDB.h
+++ b/EGkGeomDB.h
@@ -38,7 +38,7 @@ class __declspec( novtable) IGeomDB
       virtual bool Init( void) = 0 ;
       virtual bool Clear( void) = 0 ;
       virtual bool Load( const std::string& sFileIn) = 0 ;
-      virtual bool Save( const std::string& sFileOut, bool bBinary = true) const = 0 ;
+      virtual bool Save( const std::string& sFileOut, int nFlag = GDB_SV_BIN) const = 0 ;
       virtual bool ExistsObj( int nId) const = 0 ;
       virtual int  AddGroup( int nId, int nParentId, const Frame3d& frFrame) = 0 ;
       virtual int  InsertGroup( int nId, int nRefId, int nSonBeforeAfter, const Frame3d& frFrame) = 0 ;
diff --git a/EGnScan.h b/EGnScan.h
index bd34137..5cb42a2 100644
--- a/EGnScan.h
+++ b/EGnScan.h
@@ -14,7 +14,8 @@
 #pragma once
 
 #include <string>
-#include <fstream>
+
+struct gzFile_s ;
 
 //----------------------- Macro per import/export -----------------------------
 #undef EGN_EXPORT
@@ -29,7 +30,7 @@ class Scanner
 {
    public :
       EGN_EXPORT Scanner( void)
-                    : m_bSkipEmptyLine( true), m_nLineNbr( 0), m_bUnget( false), m_nDeltaLineUnget(0) {}
+                    : m_InFile( nullptr), m_bSkipEmptyLine( true), m_nLineNbr( 0), m_bUnget( false), m_nDeltaLineUnget(0) {}
       EGN_EXPORT ~Scanner( void)
                     { Terminate() ; }
       EGN_EXPORT bool Init( const std::string& sCmdFile,
@@ -43,7 +44,7 @@ class Scanner
                          { return m_sFName ; }
 
    private :
-      std::ifstream m_InFile ;
+      gzFile_s*     m_InFile ;
       std::string   m_sFName ;
       bool          m_bFindRem ;
       std::string   m_sRemInit ;