diff --git a/components/var_dumper/introduction.rst b/components/var_dumper/introduction.rst
index 05eff3e8849..086695c471c 100644
--- a/components/var_dumper/introduction.rst
+++ b/components/var_dumper/introduction.rst
@@ -104,6 +104,11 @@ original value. You can configure the limits in terms of:
* maximum number of items to dump,
* maximum string length before truncation.
+Since dumping into the toolbar is not always possible - e.g. when working on a
+JSON API - you can have an alternate output destination for dumps. This is
+configurable with the ``debug.dump_destination`` option, that you can typically
+set to ``php://stderr``.
+
.. configuration-block::
.. code-block:: yaml
@@ -111,6 +116,7 @@ original value. You can configure the limits in terms of:
debug:
max_items: 250
max_string_length: -1
+ dump_destination: ~
.. code-block:: xml
@@ -119,9 +125,17 @@ original value. You can configure the limits in terms of:
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://symfony.com/schema/dic/debug http://symfony.com/schema/dic/debug/debug-1.0.xsd">
-
+
+ .. code-block:: php
+
+ $container->loadFromExtension('debug', array(
+ 'max_items' => 250,
+ 'max_string_length' => -1,
+ 'dump_destination' => null,
+ ));
+
Dump Examples and Output
------------------------
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