Distance constraint
===================
+
+Distance constraint fixes the distance between two objects.
+
+The constraint can be defined between such objects as point, line, line or arc end point, center of circle or arc.
+
+To create a Distance constraint in the active Sketch:
+
+#. select in the Main Menu *Sketch - > Distance* item or
+#. click **Distance** button in Sketch toolbar:
+
+.. image:: images/distance.png
+ :align: center
+
+.. centered::
+ **Distance** button
+
+Property panel:
+
+.. image:: images/Distance_panel.png
+ :align: center
+
+Input fields:
+
+- **First object** is the first object selected in the view;
+- **Second object** is the second object selected in the view;
+- **Value** is a distance between the objects, can be modified to set the desirable value;
+- **Text location** is a position of the distance value label relating to extension line (in the view):
+ .. image:: images/location_left.png
+ :align: left
+ **Left** inserts text to the left of the distance extension line;
+
+ .. image:: images/location_automatic.png
+ :align: left
+ **Automatic** inserts text in the middle of the distance extension line if it has enough length, otherwise - to the left;
+
+ .. image:: images/location_right.png
+ :align: left
+ **Right** inserts text to the right of the distance extension line;
+- **Keep orientation** fixes the relative position between selected objects.
+
+When both objects are selected, the distance value is displayed in the property panel and in the view.
+
+When creating a constraint after selection of two objects for the first time:
+
+- drag the distance presentation in the view to the desired position and click once;
+- set the desirable distance value in the input field and press **Enter** or just press **Enter** to keep the current distance.
+
+.. image:: images/Distance_field_view.png
+ :align: center
+
+.. centered::
+ Distance input in the view
+
+**TUI Command**: *Sketch_1.setDistance(FirstObject, SecondObject, Value, KeepOrientation)*
+
+**Arguments**: 2 objects + distance value + keep orientation flag
+
+Result
+""""""
+
+Created Distance appears in the view.
+
+.. image:: images/Distance_res.png
+ :align: center
+
+.. centered::
+ Distance created
+
+**See Also** a sample TUI Script of :ref:`tui_create_distance` operation.
