--- /dev/null
+# Create boundary elements
+
+import salome
+salome.salome_init_without_session()
+
+import SMESH
+from salome.geom import geomBuilder
+from salome.smesh import smeshBuilder
+
+geom_builder = geomBuilder.New()
+smesh_builder = smeshBuilder.New()
+
+box = geom_builder.MakeBoxDXDYDZ(100, 100, 100)
+gFaces = geom_builder.SubShapeAllSorted(box, geom_builder.ShapeType["FACE"])
+f1,f2 = gFaces[0],gFaces[1]
+geom_builder.addToStudy(box,"box")
+geom_builder.addToStudyInFather(box,f1,"face1")
+geom_builder.addToStudyInFather(box,f2,"face2")
+
+twoFaces = geom_builder.MakeCompound([f1,f2])
+
+## -----------
+##
+## 2D from 3D
+##
+## -----------
+dim = SMESH.BND_2DFROM3D
+
+init_mesh = smesh_builder.Mesh(box, "box")
+init_mesh.AutomaticHexahedralization() # it makes 3 x 3 x 3 hexahedrons
+
+# remove some faces
+faces = init_mesh.GetElementsByType( SMESH.FACE )
+nb_faces = len( faces )
+rm_face = faces[ : nb_faces // 2]
+init_mesh.RemoveElements( rm_face )
+
+# restore boundary in this mesh
+mesh = smesh_builder.CopyMesh( init_mesh, "2D from 3D")
+groupName = "bnd 2D"
+nb, new_mesh, new_group = mesh.MakeBoundaryElements(dim, groupName)
+
+# restore boundary (only) in other mesh
+meshName = "2D boundary of " + init_mesh.GetName()
+nb, new_mesh, new_group = init_mesh.MakeBoundaryElements(dim, groupName, meshName)
+
+# restore boundary in mesh copy
+meshName = init_mesh.GetName() + " + boundary"
+nb, new_mesh, new_group = init_mesh.MakeBoundaryElements(dim, groupName, meshName, toCopyAll=True)
+
+## -----------
+##
+## 1D from 2D
+##
+## -----------
+dim = SMESH.BND_1DFROM2D
+
+init_mesh = smesh_builder.Mesh(f1, "2D mesh")
+init_mesh.AutomaticHexahedralization()
+
+# remove some edges
+edges = init_mesh.GetElementsByType( SMESH.EDGE )
+nb_edges = len( edges )
+rm_edge = edges[ : nb_edges // 2]
+init_mesh.RemoveElements( rm_edge )
+
+
+# restore boundary edges in this mesh
+mesh = smesh_builder.CopyMesh( init_mesh, "1D from 2D")
+groupName = "bnd 1D"
+nb, new_mesh, new_group = mesh.MakeBoundaryElements(dim, groupName)
+
+# restore boundary edges (only) in other mesh
+meshName = "1D boundary of " + init_mesh.GetName()
+nb, new_mesh, new_group = init_mesh.MakeBoundaryElements(dim, groupName, meshName)
+
+# restore boundary edges in mesh copy
+meshName = init_mesh.GetName() + " + boundary"
+nb, new_mesh, new_group = init_mesh.MakeBoundaryElements(dim, groupName, meshName, toCopyAll=True)
+
+## ------------------
+##
+## 1D from 2D GROUPS
+##
+## ------------------
+dim = SMESH.BND_1DFROM3D
+
+init_mesh = smesh_builder.Mesh(box, "box")
+init_mesh.AutomaticHexahedralization() # it makes 3 x 3 x 3 hexahedrons
+# remove all edges
+rm_edges = init_mesh.GetElementsByType( SMESH.EDGE )
+init_mesh.RemoveElements( rm_edges )
+
+# make groups of faces
+fGroup1 = init_mesh.Group( f1, "f1" )
+fGroup2 = init_mesh.Group( f2, "f2" )
+
+# make 1D boundary around groups in this mesh
+mesh = smesh_builder.CopyMesh( init_mesh, "1D from 2D groups", toCopyGroups=True)
+groups = mesh.GetGroups()
+nb, new_mesh, new_group = mesh.MakeBoundaryElements(dim, groupName,groups=groups)
+
+# make 1D boundary (only) in other mesh
+meshName = "boundary from groups of " + init_mesh.GetName()
+groups = init_mesh.GetGroups()
+nb, new_mesh, new_group = init_mesh.MakeBoundaryElements(dim, groupName, meshName,groups=groups)
+
+# make 1D boundary in mesh copy
+meshName = init_mesh.GetName() + " + boundary from groups"
+nb, new_mesh, new_group = init_mesh.MakeBoundaryElements(dim, groupName, meshName,
+ groups=groups, toCopyAll=True)
+
