Something

test.xml:

<?xml version="1.0" encoding="UTF-8"?>

<widget type="window" width="200" height="200">
	<resizeable value="true" />
	<moveable value="true" />
	<shadeable value="true" />
	<alignment value="none" />
	<buttons value="['Close','Maximize','Minimize']" />
	<icon src="" />
	<title text="Simple test 1" />
	<content>

	&lt;h1&gt;This is a sample widget&lt;/h1&gt;
	&lt;p&gt;
		Goodie !
	&lt;/p&gt;

	</content>
</widget>

--------

login.xml (inkludering)

<?xml version="1.0" encoding="UTF-8"?>

<widget type="window" width="400" height="200">
	<resizeable value="false" />
	<moveable value="false" />
	<shadeable value="true" />
	<alignment value="center" />
	<buttons value="[]" />
	
	<icon src="" />
	<title text="Login" />
	<content>

	</content>
	<include keyword="" src="engine/widgets/login-main.php" />
	
</widget>