diff --git a/EGkTrimming.h b/EGkTrimming.h
index 68c9917..6c327e7 100644
--- a/EGkTrimming.h
+++ b/EGkTrimming.h
@@ -50,6 +50,9 @@ EGK_EXPORT ISurfBezier* GetTrimmingRuledBezier( const CISURFPVECTOR& vSurf, cons
                                                 double dLinTol, const BIPNTVECTOR& vSyncPoints) ;
 EGK_EXPORT bool GetTrimmingSurfBzSyncPoints( const ICurve* pCrvEdge1, const ICurve* pCrvEdge2,
                                              double dLinTol, BIPNTVECTOR& vSyncPoints) ;
+EGK_EXPORT bool GetTrimmingSyncInterpolation( const ICurve* pCrvEdge1, const ICurve* pCrvEdge2,
+                                              const ICurve* pSync1, const ICurve* pSync2, double dLinTol,
+                                              double dAngTol, BIPNTVECTOR& vSyncPoints) ;
 EGK_EXPORT bool GetTrimmingHoleBorders( const CISURFPVECTOR& vpSurf, const Point3d& ptRef, double dSurfLinTol,
                                         double dSurfAngTol, double dEdgeLinTol, double dEdgeAngTol,
                                         double dEdgeThick, ICRVCOMPOPOVECTOR& vHoleBorders) ;
diff --git a/EXeExecutor.h b/EXeExecutor.h
index ca28f7b..5c29347 100644
--- a/EXeExecutor.h
+++ b/EXeExecutor.h
@@ -1517,6 +1517,9 @@ EXE_EXPORT bool ExeTrimmingGetFinalBorders( int nParentId, const INTVECTOR& vCrv
                                             int& nFirstId, int& nCount) ;
 EXE_EXPORT int  ExeTrimmingGetRuledBezier( int nParentId, const INTVECTOR& vIds, int nEdge1Id, int nEdge2Id, double dLinTol,
                                            const INTVECTOR& vnLineIds) ;
+EXE_EXPORT bool ExeTrimmingInterpolateSyncLines( int nParentId, int nSync1Id, int nSync2Id,
+                                                 int nBorder1Id, int nBorder2Id, double dEdgeLinTol,
+                                                 double dEdgeAngTol, int& nFirstId, int& nCount) ;
 EXE_EXPORT bool ExeTrimmingGetSurfBzSyncPoints( int nParentId, int nEdge1Id, int nEdge2Id, double dLinTol,
                                                 double dAngTol, int nLineNbr, bool bShowOnCorners,
                                                 int& nFirstId, int& nCount) ;