<t:test xmlns:t="jelly:test">
	
	<t:echo id="1" attr="${ 1 + 2 }">${ 'hello' + " world" }</t:echo>
	<t:echo id="2" attr="${ 2 + 3 }"><sometag>${ 'goodbye cruel' + " world" }</sometag></t:echo>
	
</t:test>