\page adding_quadratic_elements_page Adding Quadratic Elements
-\n MESH modules allows you to work with <b>Quadratic Elements</b>.
+\n MESH module allows you to work with <b>Quadratic Elements</b>.
Quadratic Edge is not a straight but a broken line and can be defined
by three points: first, middle and last. All more complex \b Quadratic
\image html image152.png
-\note All dialogs intended for adding quadratic elements to mesh provide a possibility
-to add these elements to the specified group (or to create the group if it doesn't exist).
-<b>Add to group</b> box allows to choose an existing group for created element or
-to specify a name for new group.
+\note All dialogs for adding quadratic element to the mesh
+provide a possibility to add new element
+automatically to the specified group or to create it anew using
+<b>Add to group</b> box, that allows to choose an existing group for
+the created node or element or to give the name to a new group. By
+default, the <b>Add to group</b> check box is switched off. If user
+swiches this check box on, the combo box listing all currently
+existing groups of the corresponding type becomes available. By
+default, no any group is selected. In such a case, when user presses
+<b>Apply</b> or <b>Apply & Close</b> button, the warning message box
+informing the user about the necessity to input new group name is
+shown. The combo box lists both \ref standalone_group "standalone groups"
+and \ref group_on_geom "groups on geometry". If the user has
+chosen the group on geometry, he is warned and proposed to
+\ref convert_to_standalone "convert this group to the standalone".
+If user refuses converting operation, an operation is cancelled and
+new node/element is not created!
+
To create any <b>Quadratic Element</b> specify the nodes which will form your
triangle by selecting them in the 3D viewer with pressed Shift
