What’s the point of the shaded out entry on this context menu?

This is a menu you get if you right-click an IMAP folder in Outlook Express 6. The problem, obviously, is, that what good is it having a “show” option, when you you actually need to be able to see (i.e. it has to be shown) the folder in the first place in order to “show” it?
The thing is, I’ve not been able to find anywhere in OE6 where you can actually use that menu item, since in the Imap Folders dialog there’s different functionality for showing and hiding folders. So it’s pointless!
You have to laugh.