-<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>