Is there a shortcut key to toggle through various settings of the tag filter? I don't see reference to anything like that in the Help -- just the 4 function keys.
And speaking of that filter... i only just realized that it allows for filtering selected images...(but not un-selected ones) I've only ever used the filter for tag filters. I'll have to try it out. Although... at first glance, looks like there is no way to remove a selected image from the filtered set (kinda like the D key in the preview mode works).