VISOR's UI, which exists as a layer above the VTK rendering window, is divided into panels.
The following linked pages describe how to use these panels.

- :ref:`Rendering window <visor-rendering-window>`
    Learn how to use the VISOR rendering window.

- :ref:`Lower horizontal bar <visor-lower-horizontal-bar>`
    Learn how to use the controls in the lower horizontal bar.

- :ref:`Part list <visor-part-list>`
    Learn how to use the part list.

- :ref:`Top right panel <visor-top-right-panel>`
    Learn how to use the **Part Properties** and **Legend settings** tabs.

.. image:: /user_guide/visualizer_ui/images/ui-overview.png