<em>To cut quadrangles:</em>
<ol>
-<li>Display a mesh or a submesh in the 3D viewer.</li>
+<li>Display a mesh or a sub-mesh in the 3D viewer.</li>
<li>In the \b Modification menu select the <b>Cutting of quadrangles</b> item or
click <em>"Cutting of quadrangles"</em> button in the toolbar.
-\image html image82.gif
+\image html image82.png
<center><em>"Cutting of quadrangles" button</em></center>
The following dialog box will appear:
selected element or elements from the list click \b Remove button. <b>Sort
list</b> button allows to sort the list of IDs. \b Filter button allows to
apply a definite filter to the selection of quadrangles.</li>
-<li><b>Apply to all</b> radio button allows to modify the orientation of all
-quadrangles of the currently displayed mesh or submesh.</li>
+<li><b>Apply to all</b> check box allows to modify the orientation of all
+quadrangles of the currently displayed mesh or sub-mesh.</li>
<li>\b Preview - provides a preview of cutting in the viewer.</li>
</ul>
<li><b>Use diagonal 1-3</b> and <b>Use diagonal 2-4</b> allows to
specify the opposite corners which will be connected by the cutting
edge.</li>
-<li><b>Use numeric factor</b> - allows to apply the operation only to
-those objects which meet the chosen criterion (from the list of
-Quality Controls, i.e. Skew, Warping, Minimum Angle, etc.)</li>
+<li><b>Use numeric functor</b> - allows to choose a quality criterion
+ which will be optimized at the outcome of the operation.
+<ul>
+<li><b>Minimum diagonal</b> - cuts by the shortest edge.</li>
+<li><b>Aspect Ratio</b> - cuts by the edge splitting the quadrangle
+into triangles with optimal \ref aspect_ratio_page "Aspect Ratio". The reference value is 1.</li>
+<li><b>Minimum Angle</b> - cuts by the edge splitting the quadrangle
+into triangles with optimal \ref minimum_angle_page "Minimum Angle". The reference value is 60 degrees.</li>
+<li><b>Skew</b> - cuts by the edge splitting the quadrangle
+into triangles with optimal \ref skew_page "Skew". The reference value
+is 0.0 degrees.</li>
+</ul>
+</li>
</ul>
</li>
-<li><b>Select from</b> - allows to choose a submesh or an existing
+<li><b>Select from</b> - allows to choose a sub-mesh or an existing
group whose quadrangle elements will be automatically added to the
list.</li>
</ul>
</li>
-<li>Click the \b Apply or \b OK button to confirm the operation.</li>
+<li>Click the \b Apply or <b>Apply and Close</b> button to confirm the operation.</li>
</ol>
-\image html image52.jpg
+\image html image52.jpg "The chosen quadrangular element"
-\image html image51.jpg
+\image html image51.jpg "Two resulting triangular elements"
<br><b>See Also</b> a sample TUI Script of a
\ref tui_cutting_quadrangles "Cutting Quadrangles" operation.
-*/
\ No newline at end of file
+*/
