--- /dev/null
+.. _free_edges_page:
+
+**********
+Free edges
+**********
+
+This mesh quality control highlights borders of faces (links between nodes, not mesh segments) belonging to one face only.
+
+.. image:: ../images/free_edges.png
+ :align: center
+
+.. centered::
+ Some elements of mesh have been deleted and the "holes" are outlined in red.
+
+**See Also** a sample TUI Script of a :ref:`tui_free_edges` filter.