\page selection_filter_library_page Selection filter library
-\n Selection filter library is a powerful tool enabling to create
-filters to be used on meshes. You can access to it from the Main Menu
-via <b>Tools / Selection filter library</b>.
+\n Selection filter library allows creating and storing in files
+filters that can be later reused for operations on meshes. You can
+access to it from the Main Menu via <b>Tools / Selection filter library</b>.
+It is also possible to save any filter by invoking the filter library
+from \a Filter dialog launched from any mesh operation.
\image html selectionfilterlibrary.png
When we use filters during a group creation or another operation (by
clicking <b>Set Filter</b> button in the corresponding dialog), the
-menu for setting filters looks as shown below.
+dialog for setting filters looks as shown below.
+
+\image html a-filteronfaces.png
The \b Add button creates a new criterion at the end of the list of
criteria. The \b Insert button creates a new criterion before the
is no selected mesh in the Object Browser and the filter can not be
created. You have to select the mesh and the button will be enabled.
-\image html a-filteronfaces.png
-
Some criteria are applicable to all <b>Entity types</b>:
<ul><li>
<b>Belong to Geom</b> selects entities whose all nodes lie on the
The following criteria allow selecting mesh <b>Edges</b>:
<ul><li>
<b>Free Borders</b> selects free 1D mesh elements, i.e. edges belonging to
-one face only. See also a
+one element (face or volume) only. See also a
\ref free_borders_page "Free Borders quality control".
</li><li>
<b>Double edges</b> selects 1D mesh elements basing on the same set of nodes.
\ref area_page "Area quality control"), which is more, less or equal (within a given
<b>Tolerance</b>) to the predefined <b>Threshold Value</b>.
</li><li>
-<b>Free edges</b> selects 2D mesh elements consisting of edges belonging to
-one element of mesh only. See also a
+<b>Free edges</b> selects 2D mesh elements having at least one of its
+edges not shared with other faces. See also a
\ref free_edges_page "Free Edges quality control".
</li><li>
<b>Free faces</b> selects 2D mesh elements, which belong to less than two volumes.
