A special component, org.zkoss.zhtml.Raw, used to represent any component that is not declared in the following section (i.e., not in lang.xml). In other words, if any unrecognized component name is found, an instance of Raw is created, such that a proper HTML tag will be generated correspondingly. In other words, any component name is legal (as long as the targeted browser supports).

<marquee align="top">...</marquee>

It is equivalent to

new Raw().setDynamicAttribute("align", "top");