.. _free_borders_page:

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Free borders
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This mesh quality control highlights 1D elements (segments) belonging to one element (face or volume) only.

.. image:: ../images/free_borders1.png
	:align: center

In this picture the free borders are displayed in red. (Faces are explicitly shown via **Display Entity** menu as all elements but segments are hidden upon this control activation).

**See Also** a sample TUI Script of a :ref:`tui_free_borders` operation.