Setting the context parameter org.icefaces.aria.enabled to true indicates that all views in the the application are ARIA (Accessible Rich Internet Applications) enabled.
<context-param>
<param-name>org.icefaces.aria.enabled</param-name>
<param-value>false</param-value>
</context-param>
This feature can also be controlled on a per-page basis using the <ice:config> tag and setting the desired attribute.
<icecore:config ariaEnabled="false"/>
See the documentation on the <ice:config> tag for additional information.