/*! \page modifying_meshes_page Modifying meshes Salome provides an extremely vast specter of mesh modification and transformation operations, giving the possibility to: <ul> <li>\subpage adding_nodes_and_elements_page "Add" mesh elements from nodes to polyhedrons at an arbitrary place in the mesh.</li> <li>\subpage adding_quadratic_elements_page "Add quadratic" mesh elements (used in quadratic meshes) from quadratic nodes to quadratic polyhedrons at an arbitrary place in the mesh.</li> <li>\subpage removing_nodes_and_elements_page "Remove" any existing mesh elements.</li> <li>\subpage renumbering_nodes_and_elements_page "Renumber" nodes and elements of the mesh.</li> <li>\subpage translation_page "Translate" in the indicated direction the mesh or some of its elements.</li> <li>\subpage rotation_page "Rotate" by the indicated axis and angle the mesh or some of its elements.</li> <li>\subpage scale_page "Scale" the mesh or some of its elements.</li> <li>\subpage symmetry_page "Mirror" the mesh through a point or a vector of symmetry.</li> <li>\subpage double_nodes_page "Duplicate nodes".</li> <li>Unite meshes by \subpage sewing_meshes_page "sewing" free borders, conform free borders, border to side or side elements.</li> <li>\subpage merging_nodes_page "Merge Nodes", considered coincident within the indicated tolerance.</li> <li>\subpage merging_elements_page "Merge Elements", considered coincident within the indicated tolerance.</li> <li>\subpage mesh_through_point_page "Move Nodes" to an arbitrary location with consequent transformation of all adjacent elements and edges.</li> <li>\subpage diagonal_inversion_of_elements_page "Invert an edge" between neighboring triangles.</li> <li>\subpage uniting_two_triangles_page "Unite two triangles".</li> <li>\subpage uniting_set_of_triangles_page "Unite several adjacent triangles".</li> <li>\subpage changing_orientation_of_elements_page "Change orientation" of the selected elements.</li> <li>\subpage cutting_quadrangles_page "Cut a quadrangle" into two triangles.</li> <li>\subpage split_to_tetra_page "Split" volumic elements into tetrahedra.</li> <li>\subpage smoothing_page "Smooth" elements, reducung distortions in them by adjusting the locations of element corners.</li> <li>Create an \subpage extrusion_page "extrusion" along a vector.</li> <li>Create an \subpage extrusion_along_path_page "extrusion along a path".</li> <li>Create an edge or a surface by \subpage revolution_page "revolution" of the selected node or edge.</li> <li>Apply \subpage pattern_mapping_page "pattern mapping".</li> <li>\subpage convert_to_from_quadratic_mesh_page "Convert regular mesh to quadratic", or vice versa.</li> <li>\subpage make_2dmesh_from_3d_page "Generate boundary elements".</li> <li>\subpage generate_flat_elements_page "Generate flat elements on group boundaries or on faces".</li> <li>\subpage cut_mesh_by_plane_page "Cut a tetrahedron mesh by a plane".</li> </ul> \note It is possible to use the variables defined in the SALOME \b NoteBook to specify the numerical parameters used for modification of any object. */