<li>For meshing of 3D entities (<b>solid objects</b>):</li>
<ul>
-<li><em>Hexahedron (i,j,k)</em>meshing algorithm - 6-sided solids are
- split into hexahedral (cuboid) elements.</li>
+<li><em>Hexahedron (i,j,k)</em> meshing algorithm - solids are
+ split into hexahedral elements thus forming a structured 3D
+ mesh. The algorithm requires that 2D mesh generated on a solid could
+ be considered as a mesh of a box, i.e. there should be six nodes shared
+ by three quadrangles and the rest nodes should be shared by four
+ quadrangles.
+\image html hexa_ijk_mesh.png "Structured mesh generated by Hexahedron (i,j,k) on a solid bound by 16 faces"
+</li>
+
<li>\subpage cartesian_algo_page "Body Fitting" meshing
algorithm - solids are split into hexahedral elements forming
a Cartesian grid; polyhedra and other types of elements are generated
<li>\subpage projection_algos_page "for meshing by projection of another mesh"</li>
<li>\subpage import_algos_page "for meshing by importing elements from another mesh"</li>
<li>\subpage radial_prism_algo_page "for meshing geometrical objects with cavities"</li>
-<li>\subpage radial_quadrangle_1D2D_algo_page "for meshing special 2d faces (circles and part of circles)"</li>
+<li>\subpage radial_quadrangle_1D2D_algo_page "for meshing special faces (circles and parts of circles)"</li>
<li>\subpage use_existing_page "Use Edges to be Created Manually" and
\ref use_existing_page "Use Faces to be Created Manually" algorithms can be
used to create a 1D or a 2D mesh in a python script.</li>
