--- /dev/null
+<?xml version="1.0" ?>
+
+<container xmlns="http://symfony.com/schema/dic/services"
+ xmlns:project="http://www.example.com/schema/project">
+
+ <parameters>
+ <parameter key="project.parameter.foo">BAR</parameter>
+ </parameters>
+
+ <services>
+ <service id="project.service.foo" class="BAR" />
+ </services>
+
+ <project:bar babar="babar">
+ <another />
+ <another2>%project.parameter.foo%</another2>
+ </project:bar>
+
+</container>