<?xml version='1.0' encoding='UTF-8'?>
<chapter>
<section>
<title>Description</title>
    <para>The <emphasis role="bold">
        <property>&lt;a4j:commandButton&gt;</property>
      </emphasis>component is very similar to the<emphasis role="bold">
        <property>&lt;h:commandButton&gt;</property>
      </emphasis>component, the only difference is that an Ajax form submit is generated on a click and it allows dynamic rerendering after a response comes back. It&apos;s not necessary to plug any support into the component, as Ajax support is already built in.</para>
</section>
</chapter>