Wincvs: tag column - what is it?

[gfedor]

I'm using Wincvs 1.0.6.  In the window displaying the files in a 
module there is a column labeled 'tag'.  I am using tags and expected 
this column to list something about the tags assigned to the files 
(perhaps most recent?), but is empty.  What is this column for and 
how do I get it to display something?

TIA