When I process my new photo, I like to browse through the folder, and mark any interesting photo with the TODO label (ctrl+alt+4).
After, I will edit IPTC and resize them before uploading in Flickr.
I didn't find anyway to put together the marked photo from the current folder (not all marked photo in all folders). Such functionality, either in filter, sort or search, will be very nice.
Filter/sort/search on color labels
Moderators: helmut, XnTriq, xnview