diff --git a/EGkBBox3d.h b/EGkBBox3d.h
index 50708b1..7048369 100644
--- a/EGkBBox3d.h
+++ b/EGkBBox3d.h
@@ -69,6 +69,9 @@ class EGK_EXPORT BBox3d
       bool GetCenterExtent( Point3d& ptCenter, Vector3d& vtExtent) const ;
       bool GetCenter( Point3d& ptCenter) const ;
       bool GetRadius( double& dRad) const ;
+      void Translate( const Vector3d& vtMove) ;
+      bool Rotate( const Point3d& ptAx, const Vector3d& vtAx, double dAngDeg) ;
+      bool Rotate( const Point3d& ptAx, const Vector3d& vtAx, double dCosAng, double dSinAng) ;
       bool ToGlob( const Frame3d& frRef) ;
       bool ToLoc( const Frame3d& frRef) ;
       bool LocToLoc( const Frame3d& frOri, const Frame3d& frDest) ;
diff --git a/EGnLuaAux.h b/EGnLuaAux.h
index 3b6be7b..1f3f5a2 100644
--- a/EGnLuaAux.h
+++ b/EGnLuaAux.h
@@ -17,7 +17,6 @@
 
 //----------------------------------------------------------------------------
 #define LuaCheckParam(L,I,P)      { if ( ! LuaGetParam(L,I,P)) return luaL_error( L, " Invalid Parameter # " #I) ;}
-#define LuaCheckParamDef(L,I,P,D) { if ( ! LuaGetParam(L,I,P)) (P) = (D) ; }
 
 //----------------------------------------------------------------------------
 inline bool
diff --git a/EInAPI.h b/EInAPI.h
index f23226a..19bed4c 100644
--- a/EInAPI.h
+++ b/EInAPI.h
@@ -197,10 +197,11 @@ EIN_EXPORT int  __stdcall EgtGetCurrPart( void) ;
 EIN_EXPORT int  __stdcall EgtGetCurrLayer( void) ;
 EIN_EXPORT BOOL __stdcall EgtSetCurrPartLayer( int nPartId, int nLayerId) ;
 EIN_EXPORT BOOL __stdcall EgtResetCurrPartLayer( void) ;
-EIN_EXPORT int  __stdcall EgtGetFirstVisiblePart( void) ;
-EIN_EXPORT int  __stdcall EgtGetNextVisiblePart( int nId) ;
-EIN_EXPORT int  __stdcall EgtGetFirstVisibleLayer( int nPartId) ;
-EIN_EXPORT int  __stdcall EgtGetNextVisibleLayer( int nId) ;
+EIN_EXPORT int  __stdcall EgtGetPartNbr( bool bOnlyVisible) ;
+EIN_EXPORT int  __stdcall EgtGetFirstPart( bool bOnlyVisible) ;
+EIN_EXPORT int  __stdcall EgtGetNextPart( int nId, bool bOnlyVisible) ;
+EIN_EXPORT int  __stdcall EgtGetFirstLayer( int nPartId, bool bOnlyVisible) ;
+EIN_EXPORT int  __stdcall EgtGetNextLayer( int nId, bool bOnlyVisible) ;
 EIN_EXPORT BOOL __stdcall EgtSelectPartObjs( int nPartId) ;
 EIN_EXPORT BOOL __stdcall EgtDeselectPartObjs( int nPartId) ;
 EIN_EXPORT BOOL __stdcall EgtSelectLayerObjs( int nLayerId) ;
@@ -500,6 +501,8 @@ EIN_EXPORT BOOL __stdcall EgtFrameToLoc( double ptOrig[3], double vtX[3], double
 EIN_EXPORT BOOL __stdcall EgtFrameLocToLoc( double ptOrig[3], double vtX[3], double vtY[3], double vtZ[3],
                           const double ptO1[3], const double vtX1[3], const double vtY1[3], const double vtZ1[3],
                           const double ptO2[3], const double vtX2[3], const double vtY2[3], const double vtZ2[3]) ;
+EIN_EXPORT BOOL __stdcall EgtBBoxRotate( double ptMin[3], double ptMax[3],
+                          const double ptAx[3], const double vtAx[3], double dAngRotDeg) ;
 EIN_EXPORT BOOL __stdcall EgtBBoxToGlob( double ptMin[3], double ptMax[3],
                           const double ptO1[3], const double vtX1[3], const double vtY1[3], const double vtZ1[3]) ;
 EIN_EXPORT BOOL __stdcall EgtBBoxToLoc( double ptMin[3], double ptMax[3],
diff --git a/EInConst.h b/EInConst.h
index db9756e..f46876b 100644
--- a/EInConst.h
+++ b/EInConst.h
@@ -22,6 +22,6 @@ enum EinSep { SEP_STD =  0,
 
 //----------------- Costanti tipo di riferimento di input ----------------------
 enum RefType{ RTY_GLOB = 0,
-              RTY_LOC = 1,
-              RTY_GRID = 2} ;
+              RTY_GRID = -3,        // come GDB_ID_GRID
+              RTY_LOC = -4} ;
 const int RTY_DEFAULT = RTY_LOC ;
\ No newline at end of file
diff --git a/EMkMachMgr.h b/EMkMachMgr.h
index d8f78dc..c192559 100644
--- a/EMkMachMgr.h
+++ b/EMkMachMgr.h
@@ -27,12 +27,12 @@
 class __declspec( novtable) IMachMgr
 {
    public :
-     // General
+     // Basic
       virtual ~IMachMgr( void) {} 
       virtual bool Init( IGeomDB* pGeomDB) = 0 ;
       virtual bool Update( void) = 0 ;
       virtual bool Insert( int nInsGrp) = 0 ;
-     // MachGroup
+     // MachGroups
       virtual int  GetMachGroupNbr( void) const = 0 ;
       virtual int  GetFirstMachGroup( void) const = 0 ;
       virtual int  GetNextMachGroup( int nId) const = 0 ;
@@ -44,17 +44,24 @@ class __declspec( novtable) IMachMgr
       virtual bool SetCurrMachGroup( int nId) = 0 ;
       virtual bool ResetCurrMachGroup( void) = 0 ;
       virtual int  GetCurrMachGroup( void) const = 0 ;
-     // RawPart & Part
+     // RawParts
+      virtual int  GetRawPartNbr( void) const = 0 ;
+      virtual int  GetFirstRawPart( void) const = 0 ;
+      virtual int  GetNextRawPart( int nId) const = 0 ;
       virtual int  AddRawPart( const Point3d& ptOrig, double dWidth, double dLen, double dHeight, Color cCol) = 0 ;
       virtual int  AddRawPartWithPart( int nPartId, int nCrvSrfId, double dOverMat, Color cCol) = 0 ;
-      virtual bool AddPartToRawPart( int nPartId, const Point3d& ptPos, int nRawId) = 0 ;
       virtual bool ModifyRawPartHeight( int nRawId, double dHeight) = 0 ;
       virtual bool RemoveRawPart( int nRawId) = 0 ;
       virtual bool TranslateRawPart( int nRawId, const Vector3d& vtMove) = 0 ;
       virtual bool RotateRawPart( int nRawId, const Vector3d& vtAx, double dAngRotDeg) = 0 ;
       virtual bool MoveToCornerRawPart( int nRawId, const Point3d& ptCorner, int nFlag) = 0 ;
       virtual bool MoveToCenterRawPart( int nRawId, const Point3d& ptCenter, int nFlag) = 0 ;
-      virtual bool RemovePartFromRawPart( int nPartId) ;
+     // Parts
+      virtual int  GetPartInRawPartNbr( int nRawId) const = 0 ;
+      virtual int  GetFirstPartInRawPart( int nRawId) const = 0 ;
+      virtual int  GetNextPartInRawPart( int nId) const = 0 ;
+      virtual bool AddPartToRawPart( int nPartId, const Point3d& ptPos, int nRawId) = 0 ;
+      virtual bool RemovePartFromRawPart( int nPartId) = 0 ;
       virtual bool TranslatePartInRawPart( int nPartId, const Vector3d& vtMove) = 0 ;
       virtual bool RotatePartInRawPart( int nPartId, const Vector3d& vtAx, double dAngRotDeg) = 0 ;
 } ;