<canvas>
<simplelayout spacing="5"/>
<class name="box" height="100" width="100" bgcolor="red"/>
<class name="borderedbox" extends="box">
<view bgcolor="yellow" x="3" y="3" width="${parent.width-6}" height="${parent.height-6}"/>
</class>
<borderedbox/>
<borderedbox/>
<borderedbox/>
</canvas>