/*!
\page modifying_meshes_page Modifying meshes
Salome provides an extremely vast spectre of mesh modification and
transformation operations, giving the possibility to:
- \subpage adding_nodes_and_elements_page "Add" mesh elements from
nodes to polyhedrons at an arbitrary place in the mesh.
- \subpage adding_quadratic_elements_page "Add quadratic" mesh
elements (used in qyadratic meshes) from quadratic nodes
nodes to quadratic polyhedrons at an arbitrary place in the mesh.
- \subpage removing_nodes_and_elements_page "Remove" any existing
mesh elements.
- \subpage renumbering_nodes_and_elements_page "Renumber" nodes and
elements of the mesh.
- \subpage translation_page "Translate" in the indicated direction the mesh or some of
its elements.
- \subpage rotation_page "Rotate" by the indicated axis and angle
the mesh or some of its elements.
- Create a \subpage symmetry_page "symmetrical copy" of the mesh
through a point or a vector of symmetry.
- Unite meshes by \subpage sewing_meshes_page "sewing" free borders,
conform free borders, border to side or side elements.
- \subpage merging_nodes_page "Merge Notes", considered coincident
within the indicated tolerance.
- \subpage merging_elements_page "Merge Elements", considered coincident
within the indicated tolerance.
- \subpage moving_nodes_page "Move Nodes" to an arbitrary location
with consequent transformation of all adjacent elements and edges.
- \subpage mesh_through_point_page "Make node at a point", existing
or created anew.
- \subpage diagonal_inversion_of_elements_page "Invert an edge" between neighboring triangles.
- \subpage uniting_two_triangles_page "Unite two triangles".
- \subpage uniting_set_of_triangles_page "Unite several adjacent triangles".
- \subpage changing_orientation_of_elements_page "Change orientation"
of the selected elements.
- \subpage cutting_quadrangles_page "Cut a quadrangle" into two triangles.
- \subpage smoothing_page "Smooth" elements,reducung distortions in
them by adjusting the locations of element corners.
- Create an \subpage extrusion_page "extrusion" along a vector.
- Create an \subpage extrusion_along_path_page "extrusion along a path".
- Create an edge or a surface by \subpage revolution_page "revolution"
of the selected node or edge.
- Apply \subpage pattern_mapping_page "pattern mapping".
- \subpage convert_to_from_quadratic_mesh_page "Convert regular mesh to quadratic",
or vice versa.
*/