[Wei Chiang]

Hi, folks,

I wonder if someone could explain if the following <f:param> tag does 
something useful in tree2*.jsp of the "simple" examples.

<h:commandLink immediate="true" styleClass="#{t.nodeSelected ? 
'documentSelected':'document'}" actionListener="#{t.setNodeSelected}">
                    <t:graphicImage value="/images/document.png" border="0"/>
                    <h:outputText value="#{node.description}"/>
                    <f:param name="docNum" value="#{node.identifier}"/>(?)
</h:commandLink>

Also 
<t:commandNavigation id="nav_1" value="#{example_messages['nav_Home']}" 
action="go_home">
        <f:param name="param" value="value"/>(?)
</t:commandNavigation>

in inc/navigation.jsp

Thanks,
Wei