.. _double_nodes_control_page:

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Double nodes
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This mesh quality control highlights the nodes which are coincident with other nodes (within a given tolerance). Distance at which two nodes are considered coincident is defined by :ref:`Quality Controls/Double nodes tolerance <dbl_nodes_tol_pref>` preference.

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

.. centered::
   Some nodes are coincident after copying all elements with translation.

**See also**: A sample TUI Script of a :ref:`tui_double_nodes_control` filter.
