Symmetry
========
+**Symmetry** feature makes a symmetrical copy of the selected shape.
-.. image:: images/Symmetry.png
+To create a Symmetry in the active part:
+
+#. select in the Main Menu *Part - > Symmetry* item or
+#. click **Symmetry** button in the toolbar
+
+.. image:: images/symmetry.png
+ :align: center
+
+.. centered::
+ **Symmetry** button
+
+Symmetrical copy of an Object can be mirrored in three different ways:
+
+ .. image:: images/symmetry_point_32x32.png
+ :align: left
+ through a Point of symmetry
+
+ .. image:: images/symmetry_axis_32x32.png
+ :align: left
+ through an Axis of symmetry
+
+ .. image:: images/symmetry_plane_32x32.png
+ :align: left
+ through a Plane of symmetry
+
+Symmetry through a Point of symmetry
+------------------------------------
+
+.. image:: images/symmetryPoint.png
+ :align: center
+
+.. centered::
+ Symmetry through a Point of symmetry property panel
+
+Input fields:
+
+- **Main objects** panel contains shapes to be translated. Shapes are selected in 3D OCC viewer or object browser;
+- **Point** defines a point of symmetry selected in 3D OCC viewer or object browser;
+- **Create a copy** checkbox preserves/removes the initial object.
+
+**TUI Command**: *model.addSymmetry(Part_doc, [shape], point, copy)*
+
+**Arguments**: part + list of shapes in format *model.selection(TYPE, shape)* + point in format *model.selection(TYPE, shape)*+ boolean (Create a copy key).
+
+Result
+""""""
+
+The result of operation is a mirrored initial shape with **Create a copy** = *True*.
+
+.. image:: images/symmetryPointres.png
+ :align: center
+
+.. centered::
+ Symmetry through a Point of symmetry
+
+**See Also** a sample TUI Script of :ref:`tui_symmetry_point` operation.
+
+Symmetry through an Axis of symmetry
+------------------------------------
+
+.. image:: images/symmetryAxis.png
:align: center
.. centered::
- Symmetry definition
+ Symmetry through an Axis of symmetry property panel
+
+Input fields:
+
+- **Main objects** panel contains shapes to be translated. Shapes are selected in 3D OCC viewer or object browser;
+- **Axis** defines an axis of symmetry selected in 3D OCC viewer or object browser;
+- **Create a copy** checkbox preserves/removes the initial object.
+
+**TUI Command**: *model.addSymmetry(Part_doc, [shape], axis, copy)*
+
+**Arguments**: part + list of shapes in format *model.selection(TYPE, shape)* + axis in format *model.selection(TYPE, shape)*+ boolean (Create a copy key).
+
+Result
+""""""
+
+The result of operation is a mirrored initial shape with **Create a copy** = *False*.
+
+.. image:: images/symmetryAxisres.png
+ :align: center
+
+.. centered::
+ Symmetry through an Axis of symmetry
+
+**See Also** a sample TUI Script of :ref:`tui_symmetry_axis` operation.
+
+Symmetry through a Plane of symmetry
+------------------------------------
+
+.. image:: images/symmetryPlane.png
+ :align: center
+
+.. centered::
+ Symmetry through a Plane of symmetry property panel
+
+Input fields:
+
+- **Main objects** panel contains shapes to be translated. Shapes are selected in 3D OCC viewer or object browser;
+- **Plane** defines a plane of symmetry selected in 3D OCC viewer or object browser;
+- **Create a copy** checkbox preserves/removes the initial object.
+
+**TUI Command**: *model.addSymmetry(Part_doc, [shape], plane, copy)*
+
+**Arguments**: part + list of shapes in format *model.selection(TYPE, shape)* + plane in format *model.selection(TYPE, shape)*+ boolean (Create a copy key).
+
+Result
+""""""
+
+The result of operation is a mirrored initial shape with **Create a copy** = *False*.
+
+.. image:: images/symmetryPlaneres.png
+ :align: center
+
+.. centered::
+ Symmetry through a Plane of symmetry
+
+**See Also** a sample TUI Script of :ref:`tui_symmetry_plane` operation.
\ No newline at end of file
