diff --git a/EGkSurfTriMesh.h b/EGkSurfTriMesh.h
index 5623db0..b9def3d 100644
--- a/EGkSurfTriMesh.h
+++ b/EGkSurfTriMesh.h
@@ -1,7 +1,7 @@
 //----------------------------------------------------------------------------
 //  EgalTech 2014-2023
 //----------------------------------------------------------------------------
-// File : EGkSurfTriMesh.h      Data : 07.07.23          Versione : 2.5g1
+// File : EGkSurfTriMesh.h      Data : 10.12.23          Versione : 2.5l2
 // Contenuto : Dichiarazione della interfaccia ISurfTriMesh.
 //
 //
@@ -70,9 +70,7 @@ class __declspec( novtable) ISurfTriMesh : public ISurf
       virtual bool GetVertex( int nId, Point3d& ptP) const = 0 ;
       virtual bool GetVertexParam( int nId, double& dU, double& dV) const = 0 ;
       virtual int  GetFirstVertex( Point3d& ptP) const = 0 ;
-      virtual int  GetFirstVertexParam( int nId, double& dU, double& dV) const = 0 ;
       virtual int  GetNextVertex( int nId, Point3d& ptP) const = 0 ;
-      virtual int  GetNextVertexParam( int nId, double& dU, double& dV) const = 0 ;
       virtual bool GetTriangle( int nId, int nIdVert[3]) const = 0 ;
       virtual int  GetFirstTriangle( int nIdVert[3]) const = 0 ; 
       virtual int  GetNextTriangle( int nId, int nIdVert[3]) const = 0 ; 
@@ -107,6 +105,11 @@ class __declspec( novtable) ISurfTriMesh : public ISurf
       virtual bool SwapFacets( int nF1, int nF2) = 0 ;
       virtual bool GetFacetLocalBBox( int nF, BBox3d& b3Loc, int nFlag = BBF_STANDARD) const = 0 ;
       virtual bool GetFacetBBox( int nF, const Frame3d& frRef, BBox3d& b3Ref, int nFlag = BBF_STANDARD) const = 0 ;
+      virtual int  GetEdgeCount( void) const = 0 ;
+      virtual int  GetEdgeSize( void) const = 0 ;
+      virtual bool GetEdge( int nInd, int& nV1, int& nV2, int& nFl, int& nFr, double& dAng) const = 0 ;
+      virtual bool GetEdge( int nInd, Point3d& ptP1, Point3d& ptP2, double& dAng) const = 0 ;
+      virtual bool GetEdges( ICURVEPOVECTOR& vpCurve) const = 0 ;
       virtual bool Cut( const Plane3d& plPlane, bool bSaveOnEq) = 0 ;
       virtual bool GeneralizedCut( const ICurve& cvCurve, bool bSaveOnEq) = 0 ;
       virtual bool Add( const ISurfTriMesh& Other) = 0 ;
diff --git a/EXeExecutor.h b/EXeExecutor.h
index df9c119..8a8e928 100644
--- a/EXeExecutor.h
+++ b/EXeExecutor.h
@@ -724,6 +724,7 @@ EXE_EXPORT bool ExeSurfTmGetAllVertInFacet( int nId, int nFacet, INTVECTOR& vVer
 EXE_EXPORT bool ExeSurfTmGetFacetBBox( int nId, int nFacet, int nFlag, BBox3d& b3Box) ;
 EXE_EXPORT bool ExeSurfTmGetFacetBBoxGlob( int nId, int nFacet, int nFlag, BBox3d& b3Box) ;
 EXE_EXPORT bool ExeSurfTmGetFacetBBoxRef( int nId, int nFacet, int nFlag, const Frame3d& frRef, BBox3d& b3Box) ;
+EXE_EXPORT int  ExeSurfTmGetEdges( int nId, int nDestGrpId, bool bSmoothAng, int* pnCount) ;
 EXE_EXPORT bool ExeSurfBezierGetPoint( int nSurfId, double dU, double dV, int nRefId, Point3d& ptP) ;
 EXE_EXPORT bool ExeSurfBezierGetPointD1( int nSurfId, double dU, double dV, int nUsd, int nVsd, int nRefId,
                                          Point3d& ptP, Vector3d& vtDerU, Vector3d& vtDerV) ;