Replying to walter:
I notice that you made your own icon. Perhaps you could attach that icon to the ticket, as I think it may be the source of the problem/confusion.
I believe you are missing the reason why I wrote #2282. For me, the SHAPE of the icons is a "strawman" -- right now the user is presented with five icons, without a CLUE (especially if not connected to the wiki on the internet) as to how he is supposed to work with those icons. I am suggesting that some graphical 'guides' be added to this particular screen, to introduce the user to a quicker understanding of the the function of those five icons.
Per your request, I am attaching the icon I use. I have been using that same icon for over two years, and it has never given me any trouble. [I did not make that icon myself - I got it from one of the commercial "parts suppliers" for the OLPC.]