diff --git a/EGkSurfTriMesh.h b/EGkSurfTriMesh.h
index a703cf3..ff07308 100644
--- a/EGkSurfTriMesh.h
+++ b/EGkSurfTriMesh.h
@@ -1,7 +1,7 @@
 //----------------------------------------------------------------------------
-//  EgalTech 2014-2019
+//  EgalTech 2014-2020
 //----------------------------------------------------------------------------
-// File : EgkSurfTriMesh.h      Data : 12.02.19          Versione : 2.1b2
+// File : EgkSurfTriMesh.h      Data : 15.10.20          Versione : 2.2j2
 // Contenuto : Dichiarazione della interfaccia ISurfTriMesh.
 //
 //
@@ -103,6 +103,7 @@ class __declspec( novtable) ISurfTriMesh : public ISurf
       virtual bool Subtract( const ISurfTriMesh& Other) = 0 ;
       virtual bool GetSurfClassification( const ISurfTriMesh& ClassifierSurf,
                              INTVECTOR& vTriaIn, INTVECTOR& vTriaOut, INTVECTOR& vTriaOnP, INTVECTOR& vTriaOnM, INTVECTOR& vTriaIndef) = 0 ;
+      virtual bool CutWithOtherSurf( const ISurfTriMesh& CutterSurf, bool bInVsOut, bool bSaveOnEq) = 0 ;
       virtual bool GetAllTriaOverlapBox( const BBox3d& b3Box, INTVECTOR& vT) const = 0 ;
       virtual const BBox3d& GetAllTriaBox( void) const = 0 ;
       virtual int  GetPartCount( void) const = 0 ;