Hello template, implements the Partial's methods.

{% code
type Hello struct {
  Vars map[string]interface{}
}
%}

{% func (h *Hello) Body() %}
	<h1>{%v h.Vars["message"] %}</h1>
	<div>
		Hello <b>{%v h.Vars["name"] %}!</b>
	</div>
{% endfunc %}
