diff --git a/API_Nesting.cpp b/API_Nesting.cpp
index a719274..296b3b1 100644
--- a/API_Nesting.cpp
+++ b/API_Nesting.cpp
@@ -28,7 +28,68 @@ __stdcall EgtCreateFlatParts( int nType)
 
 //-----------------------------------------------------------------------------
 BOOL
-__stdcall EgtPackPart( int nId, double dXmin, double dYmin, double dXmax, double dOffs)
+__stdcall EgtPackPart( int nId, double dXmin, double dYmin,
+                       double dXmax, double dYmax, double dOffs, BOOL bBottomUp)
 {
-   return ( ExePackPart( nId, dXmin, dYmin, dXmax, dOffs) ? TRUE : FALSE) ;
+   return ( ExePackPart( 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)
+{
+  // 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
+   return ( ExePackCluster( vIds, dXmin, dYmin, dXmax, dYmax, dOffs, bBottomUp != FALSE) ? TRUE : FALSE) ;
+}
+
+//-----------------------------------------------------------------------------
+BOOL
+__stdcall EgtGetClusterBBoxGlob( int nId[], int nCount, double ptMin[3], double ptMax[3])
+{
+  // 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]) ;
+  // recupero il bounding box dell'oggetto in globale
+   BBox3d b3Box ;
+   if ( ! ExeGetClusterBBoxGlob( vIds, b3Box))
+      return FALSE ;
+  // converto il risultato
+   ptMin[0] = b3Box.GetMin().x ;
+   ptMin[1] = b3Box.GetMin().y ;
+   ptMin[2] = b3Box.GetMin().z ;
+   ptMax[0] = b3Box.GetMax().x ;
+   ptMax[1] = b3Box.GetMax().y ;
+   ptMax[2] = b3Box.GetMax().z ;
+   return TRUE ;
+}
+
+//-----------------------------------------------------------------------------
+BOOL
+__stdcall EgtMoveCluster( int nId[], int nCount, const double vtMove[3],
+                          double dXmin, double dYmin, double dXmax, double dYmax, double dOffs)
+{
+  // 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
+   return ( ExeMoveCluster( vIds, vtMove, dXmin, dYmin, dXmax, dYmax, dOffs) ? TRUE : FALSE) ;
 }
diff --git a/EgtInterface.rc b/EgtInterface.rc
index 58c7f0d..5e795bf 100644
Binary files a/EgtInterface.rc and b/EgtInterface.rc differ