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--- a/point_of_sale/shop/refund.rst
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@@ -1,3 +1,21 @@
 ==================================
 How to return and refund products?
-==================================
\ No newline at end of file
+==================================
+
+To refund a customer, from the PoS main view, you have to insert
+negative values. For instance in the last order you count too many
+``pumpkins`` and you have to pay back one.
+
+.. image:: media/refund01.png
+    :align: center
+
+You can see that the total is negative, to end the refund, you only have
+to process the payment.
+
+.. image:: media/refund02.png
+    :align: center
+
+.. seealso::
+    * :doc:`cash_control`
+    * :doc:`invoice`
+    * :doc:`seasonal_discount`