@hrmhrm, hey there. Again, thanks for your question. Serendipity linked your question here with another question I had on a different post on wildcard searches.
Check this out. include-test4.tbx (110.8 KB), a great use of the dot operator. 
I run a rule with two dot operators, sort and format. This rule pulls the items from $DisplayedAttributes, sorts them, formats the set to a string, and then codes them with the HTML so that on export they become a bulleted list (see this).
Here is the export preview:
