-<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 chose a quality criterion
- optimization of which will be used to select the cutting edge.</li>
+<li><b>Cut into 4 triangles</b> selects cutting the quadrangle into four triangles by
+ inserting a new node at the center of quadrangle. The other options selects cutting
+ the quadrangle into two triangles by connecting nodes of either of the two diagonals.
+<li><b>Use diagonal 1-3</b> and <b>Use diagonal 2-4</b> allows to specify the
+ opposite corners which will be connected to form two new triangles.</li>
+<li><b>Use numeric functor</b> allows to choose a quality metric which will be
+ optimized when choosing a diagonal for cutting a quadrangle.
+ <ul>
+ <li><b>Minimum diagonal</b> cuts by the shortest diagonal.</li>
+ <li><b>Aspect Ratio</b> cuts by the diagonal splitting the quadrangle into
+ triangles with \ref aspect_ratio_page "Aspect Ratio" closer to 1.</li>
+ <li><b>Minimum Angle</b> cuts by the diagonal splitting the quadrangle into
+ triangles with \ref minimum_angle_page "Minimum Angle" closer to 60
+ degrees.</li>
+ <li><b>Skew</b> cuts by the diagonal splitting the quadrangle into triangles
+ with \ref skew_page "Skew" closer to 0.0 degrees.</li>
+ </ul>
+</li>