This option makes it possible to create points along isoparametric face selected by specifying only the number  in the two directions U and V.

The direction can be reversed while clicking on the icon . This direction is materialized by the two arrows positioned with the selected starting point.


When the selected starting point is located inside surface, it is possible to ask the tool CreatePoints to generate the symmetrical points compared to the direction U and/or direction V.

                                                   Symmetry OFF   

                                                  Symmetry ON