-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
-button. Their numbers will appear in the dialog box as <b>Corner Nodes</b>
-(alternatively you can just input numbers in this field without
-selection).The edges formed by the corner nodes will appear in the
-table. To define the middle nodes for each edge double-click on the
-respective field and input the number of the node. All edges and the
-object formed by them will be displayed in the Object browser. When
-all edges are defined you will be able to click \b Apply or <b>Apply and Close</b> button to
+To create any <b>Quadratic Element</b> specify the nodes which will
+form your element by selecting them in the 3D viewer with pressed
+Shift button and click \a Selection button to the right of
+<b>Corner Nodes</b> label. Their numbers will appear in the dialog box
+as <b>Corner Nodes</b> (alternatively you can just input numbers in
+this field without selection; note that to use this way the mesh
+should be selected before invoking this operation). The edges formed
+by the corner nodes will appear in the table. To define the middle
+nodes for each edge, double-click on the respective field and input
+the number of the node (or pick the node in the viewer). For
+bi-quadratic and tri-quadratic elements, your also need to specify
+central nodes.
+As soon as all needed nodes are specified, a preview of a new
+quadratic element will be displayed in the 3D viewer. Then
+you will be able to click \b Apply or <b>Apply and Close</b> button to