diff --git a/EGkCurveComposite.h b/EGkCurveComposite.h
index 63f293d..11144d7 100644
--- a/EGkCurveComposite.h
+++ b/EGkCurveComposite.h
@@ -84,6 +84,19 @@ inline ICurveComposite* GetCurveComposite( IGeoObj* pGObj)
                { if ( pGObj == nullptr  ||  pGObj->GetType() != CRV_COMPO)
                     return nullptr ;
                  return (static_cast<ICurveComposite*>(pGObj)) ; }
+inline ICurveComposite* ConvertCurveToComposite( IGeoObj* pGObj)
+               { if ( pGObj == nullptr  ||  ( pGObj->GetType() & GEO_CURVE) == 0) {
+                    delete pGObj ;
+                    return nullptr ;
+                 }
+                 ICurveComposite* pCrvCo = CreateCurveComposite() ;
+                 if ( pCrvCo == nullptr) {
+                    delete pGObj ;
+                    return nullptr ;
+                 }
+                 pCrvCo->AddCurve( static_cast<ICurve*>( pGObj)) ;
+                 return pCrvCo ;
+               }
 
 //----------------------------------------------------------------------------
 // Raccolte di puntatori a ICurveComposite
diff --git a/EGkFrame3d.h b/EGkFrame3d.h
index 6c35eb0..5fb7f16 100644
--- a/EGkFrame3d.h
+++ b/EGkFrame3d.h
@@ -1,7 +1,7 @@
 //----------------------------------------------------------------------------
-//  EgalTech 2013-2014
+//  EgalTech 2013-2023
 //----------------------------------------------------------------------------
-// File : EGkFrame3d.h             Data : 30.05.14          Versione : 1.5e10
+// File : EGkFrame3d.h             Data : 20.07.23          Versione : 2.5g2
 // Contenuto : Dichiarazione della classe Reference Frame 3d.
 //
 //
@@ -167,3 +167,12 @@ AreSameFrame( const Frame3d& frRef1, const Frame3d& frRef2)
       return false ;
    return true ;
 }
+
+//----------------------------------------------------------------------------
+// Verifica se il riferimento coincide con quello globale (o identità)
+//----------------------------------------------------------------------------
+inline bool
+IsGlobFrame( const Frame3d& frRef)
+{
+   return AreSameFrame( frRef, GLOB_FRM) ;
+}