+.. |bool_common.icon| image:: images/bool_common.png
+ :height: 16px
Common
======
+Common feature implements a Boolean operation for extraction of a common part from a set of selected shapes.
-.. image:: images/Common.png
- :align: center
+To perform a Common operation in the active part:
+
+#. select in the Main Menu *Features - > Common* item or
+#. click |bool_common.icon| **Common** button in the toolbar
+
+There are 2 options for creation of a Common:
+
+.. image:: images/bool_common_simple.png
+ :align: left
+ :height: 24px
+
+**Simple** common part between all selected objects.
+
+.. image:: images/bool_common_advanced.png
+ :align: left
+ :height: 24px
+
+**Advanced** common part for each object between this object and all tools.
+
+--------------------------------------------------------------------------------
+
+Simple
+------
+
+.. image:: images/boolean_common_simple_property_panel.png
+ :align: center
.. centered::
- Common definition
+ **Simple**
+
+- **Objects** contains a list of objects selected in the Object Browser or in the Viewer.
+ If a subshape that belongs to a compsolid/compound was selected, other shapes of this compsolid/compound will be ignored.
+- **See preview** button shows a result of the operation.
+
+**TUI Command**:
+
+.. py:function:: model.addCommon(Part_doc, objects)
+
+ :param part: The current part object
+ :param list: A list of objects.
+ :return: Created object
+
+Result
+""""""
+
+The Result of the operation will be a shape which is a common for all selected shapes:
+
+.. image:: images/CreatedCommon.png
+ :align: center
+
+.. centered::
+ **Common created**
+
+**See Also** a sample TUI Script of :ref:`tui_create_common` operation.
+
+Advanced
+--------
+
+.. image:: images/boolean_common_advanced_property_panel.png
+ :align: center
+
+.. centered::
+ **Advanced**
+
+- **Objects** contains a list of objects selected in the Object Browser or in the Viewer.
+ If a subshape that belongs to a compsolid/compound was selected, other shapes of this compsolid/compound will be cut from
+ other objects (to avoid self-intersection) and added to the result.
+- **Tools** contains a list of objects selected in the Object Browser or in the Viewer, which will be fused with tool objects.
+ If a subshape that belongs to a compsolid/compound was selected, other shapes of this compsolid/compound will be ignored.
+- **See preview** button shows a result of the operation.
+
+**TUI Command**:
+
+.. py:function:: model.addCommon(Part_doc, objects, tools)
+
+ :param part: The current part object
+ :param list: A list of objects.
+ :param list: A list of tools.
+ :return: Created object
+
+Result
+""""""
+
+For each selected object, the common part between this object and all tools will be found:
+
+.. image:: images/boolean_common_result.png
+ :align: center
+
+.. centered::
+ **Created common**
+
+**See Also** a sample TUI Script of :ref:`tui_create_common` operation.
