diff --git a/EGkSfrCreate.h b/EGkSfrCreate.h
index 2a1f6c5..67fcf7b 100644
--- a/EGkSfrCreate.h
+++ b/EGkSfrCreate.h
@@ -35,7 +35,7 @@ EGK_EXPORT ISurfFlatRegion* GetSurfFlatRegionFromFatCurve( ICurve* pCrv, double
 EGK_EXPORT ISurfFlatRegion* GetSurfFlatRegionFromTriangle( const Triangle3d& Tria) ;
 EGK_EXPORT ISurfFlatRegion* GetSurfFlatRegionFromPolyLine( const PolyLine& ContourPolyLine) ;
 EGK_EXPORT ISurfFlatRegion* GetSurfFlatRegionFromPolyLineVector( const POLYLINEVECTOR& vContoursPolyLineVec) ;
-EGK_EXPORT bool CalcRegionPolyLines( const POLYLINEVECTOR& vPL, POLYLINEVECTOR& vPLOrd, Vector3d& vtN, INTMATRIX& vnPLIndMat, BOOLVECTOR& vbInvert) ;
+EGK_EXPORT bool CalcRegionPolyLines( const POLYLINEVECTOR& vPL, Vector3d& vtN, INTMATRIX& vnPLIndMat, BOOLVECTOR& vbInvert) ;  // la funzione restituisce una matrice con la struttura dei chunk e un vettore che indica se invertire le polyline
 
 
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