diff --git a/service_container.rst b/service_container.rst
index 632da917743..b61c37063e7 100644
--- a/service_container.rst
+++ b/service_container.rst
@@ -456,6 +456,29 @@ Injecting the dependency by the setter method just needs a change of syntax:
and "setter injection". The Symfony service container also supports
"property injection".
+.. tip::
+
+ The YAML configuration files support an expanded syntax which may be useful
+ when the YAML contents are long and complex:
+
+ .. code-block:: yaml
+
+ # app/config/services.yml
+ services:
+ # traditional syntax
+ app.newsletter_manager:
+ class: AppBundle\Newsletter\NewsletterManager
+ calls:
+ - [setMailer, ['@app.mailer']]
+
+ # expanded syntax
+ app.newsletter_manager:
+ class: AppBundle\Newsletter\NewsletterManager
+ calls:
+ - method: setMailer
+ arguments:
+ - '@app.mailer'
+
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