-<li>Choosing them manually with the mouse in the 3D Viewer. You can
-click on an element in the 3D viewer and it will be highlighted. After
-that click the \b Add button and the ID of this element will be added to
-the list.</li>
-<li>Applying Filters. The <b>Set filter</b> button allows to apply a
-definite filter to selection of the elements of your group. See more
-about filters on the
-\ref selection_filter_library_page "Selection filter library" page.</li>
+<li>By adding all entities of the chosen type existing in the
+ mesh. For this, turn on the <b>Select All</b> check box. In this mode
+ all controls, which allow selecting the entities in other ways, are
+ disabled.</li>
+<li>By choosing entities manually with the mouse in the 3D Viewer. For
+ this, turn on the <b>Enable manual edition</b> check box. You can
+ click on an element in the 3D viewer and it will be highlighted. After
+ that click the \b Add button and the ID of this element will be
+ added to the list.<br>
+ The <b>Set filter</b> button allows to define the filter for
+ selection of the elements for your group. See more about filters on
+ the \ref selection_filter_library_page "Selection filter library"
+ page.</li>
+<li>By adding entities from either a sub-mesh or an existing
+ group. For this, turn on the <b>Enable manual edition</b> check
+ box. <b>Select from</b> set of fields allows to select a sub-mesh or
+ a group of the appropriate type.</li>
+</ul>
+In the <b>manual edition</b> mode you can
+<ul>
+<li>click the \b Remove button to remove the selected items from
+ the list.</li>
+<li>click the <b>Sort List</b> button to sort the list of IDs of
+ mesh elements.</li>