diff --git a/EExImportBtl.h b/EExImportBtl.h
new file mode 100644
index 0000000..68b3625
--- /dev/null
+++ b/EExImportBtl.h
@@ -0,0 +1,38 @@
+//----------------------------------------------------------------------------
+//  EgalTech 2015-2015
+//----------------------------------------------------------------------------
+// File : EExImportBtl.h          Data : 22.08.15          Versione : 1.6h5
+// Contenuto : Dichiarazione della interfaccia IImportBtl.
+//
+//
+//
+// Modifiche : 22.08.15 DS Creazione modulo.
+//
+//
+//----------------------------------------------------------------------------
+
+#pragma once
+
+#include "/EgtDev/Include/EgkGeomDB.h"
+#include <string>
+
+//----------------------- Macro per import/export ----------------------------
+#undef EEK_EXPORT
+#if defined( I_AM_EEX)            // da definirsi solo nella DLL
+   #define EEX_EXPORT __declspec( dllexport)
+#else
+   #define EEX_EXPORT __declspec( dllimport)
+#endif
+
+//-----------------------------------------------------------------------------
+class __declspec( novtable) IImportBtl
+{
+   public :
+      virtual ~IImportBtl( void) {} 
+      virtual bool Import( const std::string& sFile, IGeomDB* pGDB) = 0 ;
+} ;
+
+//-----------------------------------------------------------------------------
+extern "C" {
+   EEX_EXPORT IImportBtl* CreateImportBtl( void) ;
+}
diff --git a/EGkPlane3d.h b/EGkPlane3d.h
index 3f49888..195c222 100644
--- a/EGkPlane3d.h
+++ b/EGkPlane3d.h
@@ -23,6 +23,41 @@ class Plane3d
       double   dDist ;
 
    public :
+      void Translate( const Vector3d& vtMove)
+              { Point3d ptP = ORIG + dDist * vtN ;
+                ptP.Translate( vtMove) ;
+                dDist = ( ptP - ORIG) * vtN ; }
+      bool Rotate( const Point3d& ptAx, const Vector3d& vtAx, double dAngDeg)
+              { double dAngRad = dAngDeg * DEGTORAD ;
+                return Rotate( ptAx, vtAx, cos( dAngRad), sin( dAngRad)) ; }
+      bool Rotate( const Point3d& ptAx, const Vector3d& vtAx, double dCosAng, double dSinAng)
+              { Point3d ptP = ORIG + dDist * vtN ;
+                if ( ! ptP.Rotate( ptAx, vtAx, dCosAng, dSinAng)  ||  ! vtN.Rotate( vtAx, dCosAng, dSinAng))
+                   return false ;
+                dDist = ( ptP - ORIG) * vtN ;
+                return true ; }
+      bool Scale( const Frame3d& frRef, double dCoeffX, double dCoeffY, double dCoeffZ)
+              { Point3d ptP = ORIG + dDist * vtN ;
+                Frame3d frOCS ;
+                if ( ! frOCS.Set( ptP, vtN)  ||  ! frOCS.PseudoScale( frRef, dCoeffX, dCoeffY, dCoeffZ))
+                   return false ;
+                vtN = frOCS.VersZ() ;
+                dDist = ( frOCS.Orig() - ORIG) * vtN ;
+                return true ; }
+      bool Mirror( const Point3d& ptOn, const Vector3d& vtNorm)
+              { Point3d ptP = ORIG + dDist * vtN ;
+                if ( ! ptP.Mirror( ptOn, vtNorm)  ||  ! vtN.Mirror( vtNorm))
+                   return false ;
+                dDist = ( ptP - ORIG) * vtN ;
+                return true ; }
+      bool Shear( const Point3d& ptOn, const Vector3d& vtNorm, const Vector3d& vtDir, double dCoeff)
+              { Point3d ptP = ORIG + dDist * vtN ;
+                Frame3d frOCS ;
+                if ( ! frOCS.Set( ptP, vtN)  ||  ! frOCS.PseudoShear( ptOn, vtNorm, vtDir, dCoeff))
+                   return false ;
+                vtN = frOCS.VersZ() ;
+                dDist = ( frOCS.Orig() - ORIG) * vtN ;
+                return true ; }
       bool ToGlob( const Frame3d& frRef)
               { Point3d ptP = ORIG + dDist * vtN ;
                 if ( ! ptP.ToGlob( frRef)  ||  ! vtN.ToGlob( frRef))
@@ -45,9 +80,9 @@ class Plane3d
 inline bool
 SetPlane( const Point3d& ptP, const Vector3d& vtN, Plane3d& plPlane)
 {
-   if ( vtN.IsSmall())
-      return false ;
    plPlane.vtN = vtN ;
+   if ( ! plPlane.vtN.Normalize())
+      return false ;
    plPlane.dDist = ( ptP - ORIG) * plPlane.vtN ;
    return true ;
 }
diff --git a/EGkStmStandard.h b/EGkStmStandard.h
index 9aabb75..6165c73 100644
--- a/EGkStmStandard.h
+++ b/EGkStmStandard.h
@@ -24,8 +24,8 @@
 #endif
 
 //----------------------------------------------------------------------------
-EGK_EXPORT ISurfTriMesh* GetSurfTriMeshBox( double dWidth, double dLen, double dHeight) ;
-EGK_EXPORT ISurfTriMesh* GetSurfTriMeshPyramid( double dWidth, double dLen, double dHeight) ;
+EGK_EXPORT ISurfTriMesh* GetSurfTriMeshBox( double dDimX, double dDimY, double dHeight) ;
+EGK_EXPORT ISurfTriMesh* GetSurfTriMeshPyramid( double dDimX, double dDimY, double dHeight) ;
 EGK_EXPORT ISurfTriMesh* GetSurfTriMeshCylinder( double dRadius, double dHeight, double dLinTol) ;
 EGK_EXPORT ISurfTriMesh* GetSurfTriMeshCone( double dRadius, double dHeight, double dLinTol) ;
 EGK_EXPORT ISurfTriMesh* GetSurfTriMeshSphere( double dRadius, double dLinTol) ;
diff --git a/EInAPI.h b/EInAPI.h
index f9f42f9..032920a 100644
--- a/EInAPI.h
+++ b/EInAPI.h
@@ -84,6 +84,7 @@ EIN_EXPORT BOOL __stdcall EgtImportDxf( const wchar_t* wsFilePath, double dScale
 EIN_EXPORT BOOL __stdcall EgtImportStl( const wchar_t* wsFilePath, double dScaleFactor) ;
 EIN_EXPORT BOOL __stdcall EgtImportCnc( const wchar_t* wsFilePath) ;
 EIN_EXPORT BOOL __stdcall EgtImportCsf( const wchar_t* wsFilePath) ;
+EIN_EXPORT BOOL __stdcall EgtImportBtl( const wchar_t* wsFilePath) ;
 EIN_EXPORT BOOL __stdcall EgtExportDxf( int nId, const wchar_t* wsFilePath) ;
 EIN_EXPORT BOOL __stdcall EgtExportStl( int nId, const wchar_t* wsFilePath) ;
 
diff --git a/EXeConst.h b/EXeConst.h
index 91eaef1..3c74207 100644
--- a/EXeConst.h
+++ b/EXeConst.h
@@ -14,6 +14,18 @@
 #pragma once
 
 
+//----------------- Costanti per tipo di file ----------------------------------
+enum FileType { FT_NULL =  0,
+                FT_NGE =   1,
+                FT_NFE =   2,
+                FT_DXF =  11,
+                FT_STL =  12,
+                FT_CNC =  13,
+                FT_CSF =  14,
+                FT_BTL =  15,
+                FT_TSC = 101,
+                FT_LUA = 102} ;
+
 //----------------- Costanti tipo di punto selezionato -------------------------
 enum EinSep { SEP_STD =  0,
               SEP_TG =  1,
diff --git a/EXeExecutor.h b/EXeExecutor.h
index 640aa31..2ea7e71 100644
--- a/EXeExecutor.h
+++ b/EXeExecutor.h
@@ -85,6 +85,7 @@ EXE_EXPORT bool ExeImportDxf( const std::string& sFilePath, double dScaleFactor)
 EXE_EXPORT bool ExeImportStl( const std::string& sFilePath, double dScaleFactor) ;
 EXE_EXPORT bool ExeImportCnc( const std::string& sFilePath) ;
 EXE_EXPORT bool ExeImportCsf( const std::string& sFilePath) ;
+EXE_EXPORT bool ExeImportBtl( const std::string& sFilePath) ;
 EXE_EXPORT bool ExeExportDxf( int nId, const std::string& sFilePath) ;
 EXE_EXPORT bool ExeExportStl( int nId, const std::string& sFilePath) ;