+.. |union_btn.icon| image:: images/union_btn.png
Union
=====
+Union feature implements a Boolean operation for creation of a union of selected objects.
-.. image:: images/Union.png
- :align: center
+To create a Union in the active part:
-.. centered::
- Union definition
+#. select in the Main Menu *Features - > Union* item or
+#. click |union_btn.icon| **Union** button in the toolbar
+
+The following property panel will be opened:
+
+.. figure:: images/Union.png
+ :align: center
+
+ **Union operation**
+
+Here it is necessary to select some objects. Only faces with shared edges or solids with shared faces are allowed for selection.
+
+**Apply** button creates a union shape.
+
+**Cancel** button cancels the operation.
+
+**TUI Command**:
+
+.. py:function:: model.addUnion(Part_doc, objects)
+
+ :param part: The current part object.
+ :param objects: A list of objects.
+ :return: Result object.
+
+Result
+""""""
+
+The Result of the operation will be a shape which is a union of selected objects:
+
+.. figure:: images/CreatedUnion.png
+ :align: center
+
+ **Union created**
+
+**See Also** a sample TUI Script of :ref:`tui_create_union` operation.
