diff --git a/EXE_Exchange.cpp b/EXE_Exchange.cpp
index 5616da9..e1d6b38 100644
--- a/EXE_Exchange.cpp
+++ b/EXE_Exchange.cpp
@@ -53,7 +53,7 @@ ExeGetFileType( const string& sFilePath)
       return FT_DXF ;
    else if ( sFileExt == "STL")
       return FT_STL ;
-   else if ( sFileExt == "CNC"  ||  sFileExt == "XPI")
+   else if ( sFileExt == "CNC"  ||  sFileExt == "XPI"  ||  sFileExt == "MPF")
       return FT_CNC ;
    else if ( sFileExt == "HED"  ||  sFileExt == "ENT"  ||  sFileExt == "ENS")
       return FT_CSF ;
diff --git a/EXE_GdbModifyCurve.cpp b/EXE_GdbModifyCurve.cpp
index cf0dba0..27933b1 100644
--- a/EXE_GdbModifyCurve.cpp
+++ b/EXE_GdbModifyCurve.cpp
@@ -139,6 +139,99 @@ ExeOffsetCurveAdv( int nId, double dDist, int nType, int* pnCount)
    return nFirstId ;
 }
 
+//-------------------------------------------------------------------------------
+bool
+ExeApproxCurve( int nId, int nApprType, double dLinTol)
+{
+   IGeomDB* pGeomDB = GetCurrGeomDB() ;
+   VERIFY_GEOMDB( pGeomDB, GDB_ID_NULL)
+  // recupero la curva
+   ICurve* pCurve = GetCurve( pGeomDB->GetGeoObj( nId)) ;
+   bool bOk = ( pCurve != nullptr) ;
+  // eseguo l'approssimazione
+   const double ANG_TOL_MAX_DEG = 90 ;
+   const double ANG_TOL_STD_DEG = 15 ;
+   const double LIN_FEA_LEN_STD = 20 ;
+   PtrOwner<ICurveComposite> pCC( CreateCurveComposite()) ;
+   bOk = bOk && ! IsNull( pCC) ;
+   if ( nApprType == APP_LINES  ||
+        nApprType == APP_LEFT_LINES  ||  nApprType == APP_LEFT_CONVEX_LINES  ||
+        nApprType == APP_RIGHT_LINES  ||  nApprType == APP_RIGHT_CONVEX_LINES) {
+      PolyLine PL ;
+      bOk = bOk && pCurve->ApproxWithLines( dLinTol, ANG_TOL_MAX_DEG, nApprType, PL) && pCC->FromPolyLine( PL) ;
+   }
+   else {       // con bi-archi
+      PolyArc PA ;
+      bOk = bOk && pCurve->ApproxWithArcsEx( dLinTol, ANG_TOL_STD_DEG, LIN_FEA_LEN_STD, PA) && pCC->FromPolyArc( PA) ;
+     // merge di archi identici di biarchi
+      bOk = bOk && pCC->MergeCurves( 0.5 * dLinTol, ANG_TOL_STD_DEG) ;
+   }
+  // copio estrusione e spessore
+   Vector3d vtExtr ;
+   if ( bOk  &&  pCurve->GetExtrusion( vtExtr))
+      pCC->SetExtrusion( vtExtr) ;
+   double dThick ;
+   if ( bOk  &&  pCurve->GetThickness( dThick))
+      pCC->SetThickness(dThick) ;
+  // sostituisco la vecchia curva con la nuova
+   bOk = bOk && pGeomDB->ReplaceGeoObj( nId, Release( pCC)) ;
+   ExeSetModified() ;
+  // se richiesto, salvo il comando Lua equivalente
+   if ( IsCmdLog()) {
+      string sLua = "EgtApproxCurve(" + ToString( nId) + "," +
+                                        ApproxTypeToString( nApprType) + "," +
+                                        ToString( dLinTol) + ")" +
+                    " -- Ok=" + ToString( bOk) ;
+      LOG_INFO( GetCmdLogger(), sLua.c_str()) ;
+   }
+  // restituisco risultato
+   return bOk ;
+}
+
+//-------------------------------------------------------------------------------
+bool
+ExeProjectCurveOnPlane( int nId, const Point3d& ptOn, const Vector3d& vtN, int nRefType)
+{
+   IGeomDB* pGeomDB = GetCurrGeomDB() ;
+   VERIFY_GEOMDB( pGeomDB, GDB_ID_NULL)
+  // recupero la curva
+   ICurve* pCurve = GetCurve( pGeomDB->GetGeoObj( nId)) ;
+   bool bOk = ( pCurve != nullptr) ;
+  // recupero il riferimento locale
+   Frame3d frLoc ;
+   bOk = bOk && pGeomDB->GetGlobFrame( nId, frLoc) ;
+  // porto in locale il punto e la normale del piano
+   Point3d ptOnL = GetPointLocal( pGeomDB, ptOn, nRefType, frLoc) ;
+   Vector3d vtNL = GetVectorLocal( pGeomDB, vtN, nRefType, frLoc) ;
+  // calcolo il piano di proiezione
+   Plane3d plPlane ;
+   bOk = bOk && SetPlane( ptOnL, vtNL, plPlane) ;
+  // eseguo la proiezione
+   PtrOwner<ICurve> pProCrv( bOk ? ProjectCurveOnPlane( *pCurve, plPlane) : nullptr) ;
+   bOk = bOk && ! IsNull( pProCrv) ;
+  // copio estrusione e spessore
+   Vector3d vtExtr ;
+   if ( bOk  &&  pCurve->GetExtrusion( vtExtr))
+      pProCrv->SetExtrusion( vtExtr) ;
+   double dThick ;
+   if ( bOk  &&  pCurve->GetThickness( dThick))
+      pProCrv->SetThickness(dThick) ;
+  // sostituisco la vecchia curva con la nuova
+   bOk = bOk && pGeomDB->ReplaceGeoObj( nId, Release( pProCrv)) ;
+   ExeSetModified() ;
+  // se richiesto, salvo il comando Lua equivalente
+   if ( IsCmdLog()) {
+      string sLua = "EgtProjectCurveOnPlane(" + ToString( nId) + ",{" +
+                                                ToString( ptOn) + "},{" +
+                                                ToString( vtN) + "}," +
+                                                RefTypeToString( nRefType) + ")" +
+                    " -- Ok=" + ToString( bOk) ;
+      LOG_INFO( GetCmdLogger(), sLua.c_str()) ;
+   }
+  // restituisco risultato
+   return bOk ;
+}
+
 //----------------------------------------------------------------------------
 bool
 ExeChangeClosedCurveStartPoint( int nId, const Point3d& ptP, int nRefType)
@@ -1364,99 +1457,6 @@ ExeRemoveCurveCompoUndercutOnY( int nId, double dLinTol)
    return bOk ;
 }
 
-//-------------------------------------------------------------------------------
-bool
-ExeApproxCurve( int nId, int nApprType, double dLinTol)
-{
-   IGeomDB* pGeomDB = GetCurrGeomDB() ;
-   VERIFY_GEOMDB( pGeomDB, GDB_ID_NULL)
-  // recupero la curva
-   ICurve* pCurve = GetCurve( pGeomDB->GetGeoObj( nId)) ;
-   bool bOk = ( pCurve != nullptr) ;
-  // eseguo l'approssimazione
-   const double ANG_TOL_MAX_DEG = 90 ;
-   const double ANG_TOL_STD_DEG = 15 ;
-   const double LIN_FEA_LEN_STD = 20 ;
-   PtrOwner<ICurveComposite> pCC( CreateCurveComposite()) ;
-   bOk = bOk && ! IsNull( pCC) ;
-   if ( nApprType == APP_LINES  ||
-        nApprType == APP_LEFT_LINES  ||  nApprType == APP_LEFT_CONVEX_LINES  ||
-        nApprType == APP_RIGHT_LINES  ||  nApprType == APP_RIGHT_CONVEX_LINES) {
-      PolyLine PL ;
-      bOk = bOk && pCurve->ApproxWithLines( dLinTol, ANG_TOL_MAX_DEG, nApprType, PL) && pCC->FromPolyLine( PL) ;
-   }
-   else {       // con bi-archi
-      PolyArc PA ;
-      bOk = bOk && pCurve->ApproxWithArcsEx( dLinTol, ANG_TOL_STD_DEG, LIN_FEA_LEN_STD, PA) && pCC->FromPolyArc( PA) ;
-     // merge di archi identici di biarchi
-      bOk = bOk && pCC->MergeCurves( 0.5 * dLinTol, ANG_TOL_STD_DEG) ;
-   }
-  // copio estrusione e spessore
-   Vector3d vtExtr ;
-   if ( bOk  &&  pCurve->GetExtrusion( vtExtr))
-      pCC->SetExtrusion( vtExtr) ;
-   double dThick ;
-   if ( bOk  &&  pCurve->GetThickness( dThick))
-      pCC->SetThickness(dThick) ;
-  // sostituisco la vecchia curva con la nuova
-   bOk = bOk && pGeomDB->ReplaceGeoObj( nId, Release( pCC)) ;
-   ExeSetModified() ;
-  // se richiesto, salvo il comando Lua equivalente
-   if ( IsCmdLog()) {
-      string sLua = "EgtApproxCurve(" + ToString( nId) + "," +
-                                        ApproxTypeToString( nApprType) + "," +
-                                        ToString( dLinTol) + ")" +
-                    " -- Ok=" + ToString( bOk) ;
-      LOG_INFO( GetCmdLogger(), sLua.c_str()) ;
-   }
-  // restituisco risultato
-   return bOk ;
-}
-
-//-------------------------------------------------------------------------------
-bool
-ExeProjectCurveOnPlane( int nId, const Point3d& ptOn, const Vector3d& vtN, int nRefType)
-{
-   IGeomDB* pGeomDB = GetCurrGeomDB() ;
-   VERIFY_GEOMDB( pGeomDB, GDB_ID_NULL)
-  // recupero la curva
-   ICurve* pCurve = GetCurve( pGeomDB->GetGeoObj( nId)) ;
-   bool bOk = ( pCurve != nullptr) ;
-  // recupero il riferimento locale
-   Frame3d frLoc ;
-   bOk = bOk && pGeomDB->GetGlobFrame( nId, frLoc) ;
-  // porto in locale il punto e la normale del piano
-   Point3d ptOnL = GetPointLocal( pGeomDB, ptOn, nRefType, frLoc) ;
-   Vector3d vtNL = GetVectorLocal( pGeomDB, vtN, nRefType, frLoc) ;
-  // calcolo il piano di proiezione
-   Plane3d plPlane ;
-   bOk = bOk && SetPlane( ptOnL, vtNL, plPlane) ;
-  // eseguo la proiezione
-   PtrOwner<ICurve> pProCrv( bOk ? ProjectCurveOnPlane( *pCurve, plPlane) : nullptr) ;
-   bOk = bOk && ! IsNull( pProCrv) ;
-  // copio estrusione e spessore
-   Vector3d vtExtr ;
-   if ( bOk  &&  pCurve->GetExtrusion( vtExtr))
-      pProCrv->SetExtrusion( vtExtr) ;
-   double dThick ;
-   if ( bOk  &&  pCurve->GetThickness( dThick))
-      pProCrv->SetThickness(dThick) ;
-  // sostituisco la vecchia curva con la nuova
-   bOk = bOk && pGeomDB->ReplaceGeoObj( nId, Release( pProCrv)) ;
-   ExeSetModified() ;
-  // se richiesto, salvo il comando Lua equivalente
-   if ( IsCmdLog()) {
-      string sLua = "EgtProjectCurveOnPlane(" + ToString( nId) + ",{" +
-                                                ToString( ptOn) + "},{" +
-                                                ToString( vtN) + "}," +
-                                                RefTypeToString( nRefType) + ")" +
-                    " -- Ok=" + ToString( bOk) ;
-      LOG_INFO( GetCmdLogger(), sLua.c_str()) ;
-   }
-  // restituisco risultato
-   return bOk ;
-}
-
 //-------------------------------------------------------------------------------
 static bool
 MyChainCurvesInGroup( int nGroupId, const Point3d& ptNear, bool bAllowInvert, int nRefType)
@@ -1516,12 +1516,32 @@ MyChainCurvesInGroup( int nGroupId, const Point3d& ptNear, bool bAllowInvert, in
 bool
 ExeChainCurvesInGroup( int nGroupId, const Point3d& ptNear, int nRefType)
 {
-   return MyChainCurvesInGroup(nGroupId, ptNear, true, nRefType) ;
+   bool bOk = MyChainCurvesInGroup(nGroupId, ptNear, true, nRefType) ;
+   ExeSetModified() ;
+  // se richiesto, salvo il comando Lua equivalente
+   if ( IsCmdLog()) {
+      string sLua = "EgtChainCurvesInGroup(" + ToString( nGroupId) + "," +
+                                               ToString( ptNear) + "}," +
+                                               RefTypeToString( nRefType) + ")" +
+                    " -- Ok=" + ToString( bOk) ;
+      LOG_INFO( GetCmdLogger(), sLua.c_str()) ;
+   }
+   return bOk ;
 }
 
 //-------------------------------------------------------------------------------
 bool
 ExeReorderCurvesInGroup( int nGroupId, const Point3d& ptNear, int nRefType)
 {
-   return MyChainCurvesInGroup(nGroupId, ptNear, false, nRefType) ;
+   bool bOk = MyChainCurvesInGroup(nGroupId, ptNear, false, nRefType) ;
+   ExeSetModified() ;
+  // se richiesto, salvo il comando Lua equivalente
+   if ( IsCmdLog()) {
+      string sLua = "EgtReorderCurvesInGroup(" + ToString( nGroupId) + "," +
+                                                 ToString( ptNear) + "}," +
+                                                 RefTypeToString( nRefType) + ")" +
+                    " -- Ok=" + ToString( bOk) ;
+      LOG_INFO( GetCmdLogger(), sLua.c_str()) ;
+   }
+   return bOk ;
 }
diff --git a/EXE_MachMgr.cpp b/EXE_MachMgr.cpp
index 2a95542..6cb9654 100644
--- a/EXE_MachMgr.cpp
+++ b/EXE_MachMgr.cpp
@@ -712,7 +712,17 @@ ExeRotatePartInRawPart( int nPartId, const Vector3d& vtAx, double dAngRotDeg)
 // Table & Fixtures
 //-----------------------------------------------------------------------------
 bool
-ExeSetTable( const std::string& sTable)
+ExeExistsTable( const string& sTable)
+{
+   GseContext* pGseCtx = GetCurrGseContext() ;
+   VERIFY_CTX_MACHMGR( pGseCtx, false)
+  // verifico esistenza della tavola indicata nella macchina della macchinata corrente
+   return pGseCtx->m_pMachMgr->ExistsTable( sTable) ;
+}
+
+//-----------------------------------------------------------------------------
+bool
+ExeSetTable( const string& sTable)
 {
    GseContext* pGseCtx = GetCurrGseContext() ;
    VERIFY_CTX_MACHMGR( pGseCtx, false)
diff --git a/EgtExecutor.rc b/EgtExecutor.rc
index 5b016dd..2a1af03 100644
Binary files a/EgtExecutor.rc and b/EgtExecutor.rc differ
diff --git a/LUA_GdbModifyCurve.cpp b/LUA_GdbModifyCurve.cpp
index 94ce00e..f0d2b3d 100644
--- a/LUA_GdbModifyCurve.cpp
+++ b/LUA_GdbModifyCurve.cpp
@@ -651,6 +651,42 @@ LuaRemoveCurveCompoUndercutOnY( lua_State* L)
    return 1 ;
 }
 
+//----------------------------------------------------------------------------
+static int
+LuaChainCurvesInGroup( lua_State* L)
+{
+  // 2 o 3 parametri : nGroupId, ptNear [, nRefType]
+   int nGroupId ;
+   LuaCheckParam( L, 1, nGroupId)
+   Point3d ptNear ;
+   LuaCheckParam( L, 2, ptNear)
+   int nRefType = RTY_DEFAULT ;
+   LuaGetParam( L, 3, nRefType) ;
+   LuaClearStack( L) ;
+  // concateno le curve nel gruppo (senza fonderle in una curva composita)
+   bool bOk = ExeChainCurvesInGroup( nGroupId, ptNear, nRefType) ;
+   LuaSetParam( L, bOk) ;
+   return 1 ;
+}
+
+//----------------------------------------------------------------------------
+static int
+LuaReorderCurvesInGroup( lua_State* L)
+{
+  // 2 o 3 parametri : nGroupId, ptNear [, nRefType]
+   int nGroupId ;
+   LuaCheckParam( L, 1, nGroupId)
+   Point3d ptNear ;
+   LuaCheckParam( L, 2, ptNear)
+   int nRefType = RTY_DEFAULT ;
+   LuaGetParam( L, 3, nRefType) ;
+   LuaClearStack( L) ;
+  // riordino le curve nel gruppo (senza fonderle in una curva composita)
+   bool bOk = ExeReorderCurvesInGroup( nGroupId, ptNear, nRefType) ;
+   LuaSetParam( L, bOk) ;
+   return 1 ;
+}
+
 //-------------------------------------------------------------------------------
 bool
 LuaInstallGdbModifyCurve( LuaMgr& luaMgr)
@@ -691,5 +727,7 @@ LuaInstallGdbModifyCurve( LuaMgr& luaMgr)
    bOk = bOk && luaMgr.RegisterFunction( "EgtExplodeCurveCompo", LuaExplodeCurveCompo) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtMergeCurvesInCurveCompo", LuaMergeCurvesInCurveCompo) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtRemoveCurveCompoUndercutOnY", LuaRemoveCurveCompoUndercutOnY) ;
+   bOk = bOk && luaMgr.RegisterFunction( "EgtChainCurvesInGroup", LuaChainCurvesInGroup) ;
+   bOk = bOk && luaMgr.RegisterFunction( "EgtReorderCurvesInGroup", LuaReorderCurvesInGroup) ;
    return bOk ;
 }