diff --git a/EGkDistPointSurfTm.h b/EGkDistPointSurfTm.h
index 4adebe2..072a497 100644
--- a/EGkDistPointSurfTm.h
+++ b/EGkDistPointSurfTm.h
@@ -11,6 +11,8 @@
 //
 //----------------------------------------------------------------------------
 
+#pragma once
+
 #include "/EgtDev/Include/EGkSurfTriMesh.h"
 
 //----------------------- Macro per import/export ----------------------------
diff --git a/EGkPolyArc.h b/EGkPolyArc.h
index 7135971..6565236 100644
--- a/EGkPolyArc.h
+++ b/EGkPolyArc.h
@@ -84,6 +84,7 @@ class PolyArc
                         { return GetNextUArc( nullptr, &ptIni, nullptr, &ptFin, &dBulge) ; }
       EGK_EXPORT bool IsFlat( int& nRank, Point3d& ptCen, Vector3d& vtDir, double dToler = EPS_SMALL) const ;
       EGK_EXPORT bool Invert( bool bInvertU = true) ;
+      EGK_EXPORT bool RemoveAlignedPoints( double dToler = EPS_SMALL) ;
 
    private :
       struct UPointB  
diff --git a/EInAPI.h b/EInAPI.h
index 7837acc..e55c6a7 100644
--- a/EInAPI.h
+++ b/EInAPI.h
@@ -521,7 +521,7 @@ EIN_EXPORT BOOL __stdcall EgtLineSurfTmInters( const double ptP[3], const double
                                                int*& vFlagInters, double*& vParInters, int* pnCount) ;
 
 // Nesting
-EIN_EXPORT BOOL __stdcall EgtCreateFlatParts( int nType) ;
+EIN_EXPORT BOOL __stdcall EgtCreateFlatParts( int nType, double dToler) ;
 EIN_EXPORT BOOL __stdcall EgtAdjustFlatPartLayer( int nLayerId) ;
 EIN_EXPORT BOOL __stdcall EgtCalcFlatPartUpRegion( int nPartId, BOOL bCalc) ;
 EIN_EXPORT BOOL __stdcall EgtCalcFlatPartDownRegion( int nPartId, double dH) ;
diff --git a/EXeExecutor.h b/EXeExecutor.h
index b1432ae..cc33e8f 100644
--- a/EXeExecutor.h
+++ b/EXeExecutor.h
@@ -600,7 +600,7 @@ EXE_EXPORT int  ExePlaneVolZmapInters( const Point3d& ptOn, const Vector3d& vtN,
 
 // Nesting
 // CreateFlatParts
-EXE_EXPORT bool ExeCreateFlatParts( int nType) ;
+EXE_EXPORT bool ExeCreateFlatParts( int nType, double dToler) ;
 EXE_EXPORT bool ExeAdjustFlatPartLayer( int nLayerId) ;
 EXE_EXPORT bool ExeCalcFlatPartUpRegion( int nPartId, bool bCalc) ;
 EXE_EXPORT bool ExeCalcFlatPartDownRegion( int nPartId, double dH) ;