.. _mirror:

Mirroring a Layer
-----------------

.. image:: ../_images/mirror.JPG
    :alt: Mirror a Layer from the Layer Manager.


:ref:`Layers<usinglayers>` can be mirrored along an axis. This function can be useful for manipulating :ref:`layers<usinglayers>` in symmetrical rooms, or when imported from :ref:`Sketchup<sketchup>` (and only one half of the model has been drawn for simplicity).

To mirror a :ref:`layer<usinglayers>`, right-click an existing one in the :ref:`Layer Manager<layermanager>`, and then choose 'Mirror along XZ plane' or 'Mirror along YZ plane', depending on the desired axis. With several :ref:`layers<usinglayers>` selected (Shift-click or Ctrl/Cmd-click), the whole selection is mirrored at once.

The new :ref:`layer<usinglayers>` will appear next to the original in the layer list. If 'Annotate Copied Layer Names' is enabled in the :ref:`Preferences<prefs>`, it is given the prefix "Mirror of..."; otherwise it keeps the original name.