Having a quite a lot of status labels, it's getting harder for me to memorize the filter rules behind them. Therefore it would be nice, if we could write our own info tips for the labels, that would pop up, when hovering or Shift-hovering over them.
On the other hand, i could make a large floating bar to toggle, and use the info function to look up all the different filters. 
... or a button to a text file listing all the different filters opening a small text editor? 
The Label column will tell you the names for each file.
Yes, sure it can tell me the names, but not really describing the filter specs. Anyway, i can use that large toolbar to include the status labels and use a comprehensive description as a workaround.
Also a possibility, but not as elegant as a tooltip would be. 
I also could use the description column, but that would mean, i'd have to have it in all locations.