Adding abbreviation explanations below the table in rdlc

Question

Hey

I have an application that generates and displays a report about bus departures from the station that the user selects. One of the columns contains some informations that are represented by an abbreviation. In the database that I use as data source, I have a table that links those abbreviations with full descriptions. My question is - how can I create a section at the end of report that displays the abbreviation and its full textual description. Of course, it should contain only the descriptions of the abbreviations that appear in the generated report, not every one that appears in the database. Do you know how this could be done?
I'm using C# in VS 2010 and rdlc reports in my application.