[unboggling]

Thanks for explaining that, dwanthny. I've never tried to use the Restrict to box before, except with the plugin Find Duplicates, to escape the dupe list back to the entire list. What you're saying makes a lot of sense, to make the books in storage status one restriction based on a save, and have another restriction for books of the status being-processed that were just Added. So to switch booklist from one restricted list to another or back to entire library, just click something on that Restrict to menu.

So, what's the difference between a restriction and a saved search? Besides the choice in Preferences to open calibre on a booklist of a specified restriction? Is there an advantage to using Restrictions over and above using Saved Searches?

Edit: Just found one answer in the manual. Can apply further searches within a restriction, just limited to the subset of books within that restriction.