The AU requests are hard to distinguish one from another since it is encoded with UUID. Thus, it is hard to know which button is clicked, or which tab is selected.
It is suggested to allow the developer to specify an attribute, say, tags, as follows
<tab tags="view source"/>
Then, the URL of zkau shall be something similar to
/zkau?tags=view+source
Thus, it can be analyzed with awstats and other tools.
It will be better if the application can plug in an extension to monitors what tags are clicked.
Ready since 4/6
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Refer to Component.setAutag's javadoc for details.