When I try to inspect with firebug, i see nothing about the title of commandlink. So, how can I change its style?
<p:commandLink id="ajax" update="panel,display"
style="margin-right:20px;"
title="STYLE?">
</p:commandLink>
I don't know if I understood question correctly, but you can't edit this style! The title generated is a html component... Try to use something like it:
<p:tooltip for="ajax" >
<h:outputText escape="false" value="<strong>Style?</strong>"/>
</p:tooltip>
Now commandlLink
title style can be modified. You can use a global tooltip too.