diff --git a/API_Nesting.cpp b/API_Nesting.cpp
index 3cbd21e..1484dd2 100644
--- a/API_Nesting.cpp
+++ b/API_Nesting.cpp
@@ -28,16 +28,16 @@ __stdcall EgtCreateFlatParts( int nType)
 
 //-----------------------------------------------------------------------------
 BOOL
-__stdcall EgtPackPart( int nId, double dXmin, double dYmin,
-                       double dXmax, double dYmax, double dOffs, BOOL bBottomUp)
+__stdcall EgtPackBox( int nId, double dXmin, double dYmin,
+                      double dXmax, double dYmax, double dOffs, BOOL bBottomUp)
 {
-   return ( ExePackPart( nId, dXmin, dYmin, dXmax, dYmax, dOffs, bBottomUp != FALSE) ? TRUE : FALSE) ;
+   return ( ExePackBox( nId, dXmin, dYmin, dXmax, dYmax, dOffs, bBottomUp != FALSE) ? TRUE : FALSE) ;
 }
 
 //-----------------------------------------------------------------------------
 BOOL
-__stdcall EgtPackCluster( int nId[], int nCount, double dXmin, double dYmin,
-                          double dXmax, double dYmax, double dOffs, BOOL bBottomUp)
+__stdcall EgtPackBoxCluster( int nId[], int nCount, double dXmin, double dYmin,
+                             double dXmax, double dYmax, double dOffs, BOOL bBottomUp)
 {
   // verifico
    if ( nId == nullptr  ||  nCount <= 0)
@@ -48,7 +48,7 @@ __stdcall EgtPackCluster( int nId[], int nCount, double dXmin, double dYmin,
    for ( int i = 0 ; i < nCount ; ++ i)
       vIds.push_back( nId[i]) ;
   // eseguo
-   return ( ExePackCluster( vIds, dXmin, dYmin, dXmax, dYmax, dOffs, bBottomUp != FALSE) ? TRUE : FALSE) ;
+   return ( ExePackBoxCluster( vIds, dXmin, dYmin, dXmax, dYmax, dOffs, bBottomUp != FALSE) ? TRUE : FALSE) ;
 }
 
 //-----------------------------------------------------------------------------
@@ -75,8 +75,8 @@ __stdcall EgtGetClusterBBoxGlob( int nId[], int nCount, double ptMin[3], double
 
 //-----------------------------------------------------------------------------
 BOOL
-__stdcall EgtMoveCluster( int nId[], int nCount, double vtMove[3],
-                          double dXmin, double dYmin, double dXmax, double dYmax, double dOffs)
+__stdcall EgtMoveBoxCluster( int nId[], int nCount, double vtMove[3],
+                             double dXmin, double dYmin, double dXmax, double dYmax, double dOffs)
 {
   // verifico
    if ( nId == nullptr  ||  nCount <= 0)
@@ -88,8 +88,68 @@ __stdcall EgtMoveCluster( int nId[], int nCount, double vtMove[3],
       vIds.push_back( nId[i]) ;
   // eseguo
    Vector3d vtM = vtMove ;
-   bool bOk = ExeMoveCluster( vIds, vtM, dXmin, dYmin, dXmax, dYmax, dOffs) ;
+   bool bOk = ExeMoveBoxCluster( vIds, vtM, dXmin, dYmin, dXmax, dYmax, dOffs) ;
    VEC_FROM_3D( vtMove, vtM)
 
    return ( bOk ? TRUE : FALSE) ;
 }
+
+//-----------------------------------------------------------------------------
+BOOL
+__stdcall EgtMovePartCluster( int nId[], int nCount, double vtMove[3],
+                              double dXmin, double dYmin, double dXmax, double dYmax)
+{
+  // verifico
+   if ( nId == nullptr  ||  nCount <= 0)
+      return false ;
+  // riempio il vettore
+   INTVECTOR vIds ;
+   vIds.reserve( nCount) ;
+   for ( int i = 0 ; i < nCount ; ++ i)
+      vIds.push_back( nId[i]) ;
+  // eseguo
+   Vector3d vtM = vtMove ;
+   bool bOk = ExeMovePartCluster( vIds, vtM, dXmin, dYmin, dXmax, dYmax) ;
+   VEC_FROM_3D( vtMove, vtM)
+
+   return ( bOk ? TRUE : FALSE) ;
+}
+
+//-----------------------------------------------------------------------------
+BOOL
+__stdcall EgtRotatePartCluster( int nId[], int nCount, const double ptCen[3], double* pdRotAngDeg, 
+                                double dXmin, double dYmin, double dXmax, double dYmax)
+{
+  // verifico
+   if ( nId == nullptr  ||  nCount <= 0  ||  pdRotAngDeg == nullptr)
+      return false ;
+  // riempio il vettore
+   INTVECTOR vIds ;
+   vIds.reserve( nCount) ;
+   for ( int i = 0 ; i < nCount ; ++ i)
+      vIds.push_back( nId[i]) ;
+  // eseguo
+   bool bOk = ExeRotatePartCluster( vIds, ptCen, *pdRotAngDeg, dXmin, dYmin, dXmax, dYmax) ;
+
+   return ( bOk ? TRUE : FALSE) ;
+}
+
+//-----------------------------------------------------------------------------
+BOOL
+__stdcall EgtGetPartClusterCenterGlob( int nId[], int nCount, double ptCen[3])
+{
+  // verifico
+   if ( nId == nullptr  ||  nCount <= 0  ||  ptCen == nullptr)
+      return false ;
+  // riempio il vettore
+   INTVECTOR vIds ;
+   vIds.reserve( nCount) ;
+   for ( int i = 0 ; i < nCount ; ++ i)
+      vIds.push_back( nId[i]) ;
+  // eseguo
+   Point3d ptC ;
+   if ( ! ExeGetPartClusterCenterGlob( vIds, ptC))
+      return FALSE ;
+   VEC_FROM_3D( ptCen, ptC)
+   return TRUE ;
+}
diff --git a/EgtInterface.rc b/EgtInterface.rc
index ea897bd..32e4973 100644
Binary files a/EgtInterface.rc and b/EgtInterface.rc differ