--- /dev/null
+<?xml version="1.0" encoding="utf-8"?>
+<?xml-stylesheet href="graph.xsl" type="text/xsl" alternate="no"?>
+<ex:graph xmlns:ex="http://www.example.com/graph">
+ <ex:config text-color="stroke:none;fill:rgb(44,44,44);"
+ node-color="stroke:rgb(44,44,44);fill:white;"
+ arc-color="stroke:rgb(44,44,44);fill:rgb(44,44,44);"
+ node-radius="35" arc-offset="5"
+ viewBox="0 0 586 86"/>
+ <ex:node name="panels" cx="43" cy="43" label="Panels"/>
+ <ex:node name="frame" cx="293" cy="43" label="Frame"/>
+ <ex:node name="engine" cx="543" cy="43" label="Engine"/>
+ <ex:arc from="panels" to="frame" label="callbacks" rotate="90"/>
+ <ex:arc from="frame" to="panels" label="panel methods"/>
+ <ex:arc from="frame" to="engine" label="execute_command()"/>
+ <ex:arc from="engine" to="frame" label="response processors"/>
+</ex:graph>