Uhm, great! I was also looking for this
Another thing came to my mind. [suggestion] Instead of having a few [help] buttons near features and preferences etc, isn't is better (well better, it is more my personal style maybe) to have an [?] icon near the [x] icon on the titlebar? So when someone click on the ? mark and then click on a feature, it gets the popup with details (like in many,many win32 apps) Just a thought!