<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 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>