In this Menu:
<ul>
-<li><b>Shape Type</b> radio button define the type of elements for the
+<li><b>Shape Type</b> radio button defines the type of elements for the
group (points, wires, faces, shells or solids).</li>
<li><b>Group Name</b> - here you can enter the name of the group, by
default, it is Group_n.</li>
<li>Then, using the "Select" button, select the <b>Main Shape</b> (a
-geometrical object on which the group will be created). You can select
-the elements of your group in two ways: </li>
+geometrical object on which the group will be created). </li>
+<li> You can select the elements of your group in two ways:
<ul>
-<li>Clicking <b>Select Sub-Shapes</b> button you can select them
+<li>You can select them
manually in the 3D Viewer, and add to the group by clicking the \b Add
button (keep down the Shift button on the keyboard to select several
elements and add all them together). The indexes of the selected
elements will be displayed in the list. To delete elements from the
-list, select them and click \b Remove button.</li>
+list, select them and click \b Remove button.\n
+ Checking in <b>Select in Place of Second Shape</b> box allows you
+to specify <b>Second Shape</b> which will restrict selection to those
+subshapes of the main shape that geometrically coincide with the
+Second Shape.
+</li>
<li>Clicking <b>Select All</b> button you can add all object's
elements of a certain type in the list of the elements of the
group. To delete elements from the list, select them and click \b
-Remove button.</li>
-</ul>
+Remove button. If you set <b>Second shape</b>, action of <b>Select
+All</b> is limited to subshapes geometrically coincident with the
+Second Shape</li>
+</ul></li>
<li>Finally, confirm your selection by clicking \b OK (also closes the
Menu) or \b Apply (leaves the Menu open for creation of other groups),
or skip it by clicking \b Close button.</li>
