/*!

\page skew_page Skew

\n \b Skew mesh quality criterion reflects the angle between the lines
that join opposite sides of a quadrangle element or the greatesr angle
between three medians in triangle elements. This mesh quality
criterion can be applied to elements composed of 4 and 3 nodes
(quadrangles and triangles).

\image html image27.jpg

<em>To apply the Skew quality criterion to your mesh:</em>
<ol>
<li>Display your mesh in the viewer.</li>

<li>Choose <b>Controls > Face Controls > Skew</b> or click
<em>"Skew"</em> button of the toolbar.

\image html image40.png
<center><em>"Skew" button </em></center>

Your mesh will be displayed in the viewer with its elements colored
according to the applied mesh quality control criterion:

\image html image93.jpg
</li>
</ol>

<br><b>See Also</b> a sample TUI Script of a 
\ref tui_skew "Skew quality control" operation.  

*/