diff --git a/EGkPlane3d.h b/EGkPlane3d.h
index e3d468c..1ea3fa0 100644
--- a/EGkPlane3d.h
+++ b/EGkPlane3d.h
@@ -42,14 +42,14 @@ class Plane3d
                { m_vtN = V_NULL ;
                  m_dDist = 0 ;
                }
+      bool IsValid( void) const
+              { return ! m_vtN.IsSmall() ; }
       const Vector3d& GetVersN( void) const
                { return m_vtN ; }
       double GetDist( void) const
                { return m_dDist ; }
-
-   public :
-      bool IsValid( void) const
-              { return ! m_vtN.IsSmall() ; }
+      Point3d GetPoint( void) const
+               { return ( ORIG + m_dDist * m_vtN) ; }
       void Translate( const Vector3d& vtMove)
               { Point3d ptP = ORIG + m_dDist * m_vtN ;
                 ptP.Translate( vtMove) ;
diff --git a/EGkStmStandard.h b/EGkStmStandard.h
index 6165c73..6720fa8 100644
--- a/EGkStmStandard.h
+++ b/EGkStmStandard.h
@@ -29,4 +29,5 @@ EGK_EXPORT ISurfTriMesh* GetSurfTriMeshPyramid( double dDimX, double dDimY, doub
 EGK_EXPORT ISurfTriMesh* GetSurfTriMeshCylinder( double dRadius, double dHeight, double dLinTol) ;
 EGK_EXPORT ISurfTriMesh* GetSurfTriMeshCone( double dRadius, double dHeight, double dLinTol) ;
 EGK_EXPORT ISurfTriMesh* GetSurfTriMeshSphere( double dRadius, double dLinTol) ;
+EGK_EXPORT ISurfTriMesh* GetSurfTriMeshPlaneInBox( const Plane3d& plPlane, const BBox3d& b3Box) ;
 
diff --git a/EXeExecutor.h b/EXeExecutor.h
index 865954b..ed7ed48 100644
--- a/EXeExecutor.h
+++ b/EXeExecutor.h
@@ -241,6 +241,7 @@ EXE_EXPORT int  ExeCreateSurfFrRectangle3P( int nParentId, const Point3d& ptIni,
 EXE_EXPORT int  ExeCreateSurfFrStadium( int nParentId, const Point3d& ptIni, const Point3d& ptCross, int nRefType) ;
 EXE_EXPORT int  ExeCreateSurfFrDisk( int nParentId, const Point3d& ptOrig, double dRad, int nRefType) ;
 EXE_EXPORT int  ExeCreateSurfTmPlaneInBBox( int nParentId, const Point3d& ptP, const Vector3d& vtN, const BBox3d& b3Box, int nRefType) ;
+EXE_EXPORT int  ExeCreateSurfTmConvexHullInBBox( int nParentId, int nId, const BBox3d& b3Box, int nRefType) ;
 EXE_EXPORT int  ExeCreateSurfTmBBox( int nParentId, const BBox3d& b3Box, int nRefType) ;
 EXE_EXPORT int  ExeCreateSurfTmBox( int nParentId, const Point3d& ptIni, const Point3d& ptCross,
                                     const Point3d& ptDir, double dHeight, int nRefType) ;