<li><b>Group of nodes to duplicate</b> (<em>mandatory</em>): these
nodes will be duplicated.</li>
<li><b>Group of elements to replace nodes with new ones</b>
- (<em>optional</em>): the new nodes will replace the duplicated nodes within these elements.</li>
+ (<em>optional</em>): the new nodes will replace the duplicated nodes
+ within these elements. \b Generate button automatically creates
+ these groups.
+</li>
<li><b>Construct group with newly created nodes</b> option
(<em>checked by default</em>): if checked - the group with newly
created nodes will be built.</li>
group of nodes at crack bottom which will not be duplicated.</li>
<li><b>Group of elements to replace nodes with new ones</b>
(<em>mandatory</em>): the new nodes will replace the nodes to
- duplicate within these elements.</li>
+ duplicate within these elements. \b Generate button automatically
+ creates these groups.</li>
<li><b>Construct group with newly created elements</b> option
(<em>checked by default</em>): if checked - the group of newly created
elements will be built.</li>
