If what you're looking to add a link to trigger an action, here's an example:
<a:actionLink id="abc-123" value="<link text>" actionListener="#{BrowseBean.setupSpaceAction}" action="dialog:showSpaceDetails">
<f:param name="id" value="#{r.id}"/>
</a:actionLink>
This block of code refers to the action entry in web-client-config-actions.xml.
<!– View space details –>
<action id="details_space">
<label-id>view_details</label-id>
<image>/images/icons/View_details.gif</image>
<action-listener>#{BrowseBean.setupSpaceAction}</action-listener>
<action>dialog:showSpaceDetails</action>
<params>
<param name="id">#{actionContext.id}</param>
</params>
</action>
Hope this helps. –Rich