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+``default``
+===========
+
+The ``default`` filter returns the passed default value if the value is
+undefined or empty, otherwise the value of the variable:
+
+.. code-block:: jinja
+
+    {{ var|default('var is not defined') }}
+
+    {{ var.foo|default('foo item on var is not defined') }}
+
+    {{ var['foo']|default('foo item on var is not defined') }}
+
+    {{ ''|default('passed var is empty')  }}
+
+When using the ``default`` filter on an expression that uses variables in some
+method calls, be sure to use the ``default`` filter whenever a variable can be
+undefined:
+
+.. code-block:: jinja
+
+    {{ var.method(foo|default('foo'))|default('foo') }}
+
+.. note::
+
+    Read the documentation for the :doc:`defined<../tests/defined>` and
+    :doc:`empty<../tests/empty>` tests to learn more about their semantics.
+
+Arguments
+---------
+
+ * ``default``: The default value