WB5.5 Vista Attribute Identification Help

I give up after spending over an hour trying to track this down.  Please look at the following picture.  What is the WB5.5 attribute for the selected (highlighted) files and/or folders in explorer?  The example screenshot is using the Acrylic skin.  A few of these items are pointed to with red arrows.  Outside of the new selected checkbox view in vista, I'd never be able to tell what files are selected/highlighted.  A point in the right direction would be greatly appreciated....thank you.