Why does a "T" icon appear in Delphi's "Search for Usages" dialog?

Instead of开发者_StackOverflow the normal IDE application icon, Delphi 2009 shows a small icon with a "T" in the "Search for Usages" dialog (see image below). What does this symbol mean?

alt text http://www.mikejustin.com/images/littlet.png

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The modeling surface in Delphi showed up after Borland acquired Together.

This is an Icon that has been used for Together.