I know that there are ways to search for specific columns in your library (and thus to filter collections by these) using the parameters in the Wiki, but I have not seen nor been able to figure out the attribute by which to search for "Reading Status" in my library. To clarify, I mean the circle with the visual representation of how much I've read. (e.g., "You've read 19% of this resource.")
I would imagine that a search field exists for this, because if I click on the column header "Reading Status", it groups them according to "Reading", "Finished", and "Unread." I searched the wiki for the attribute name, but could find nothing on it. Perhaps it does not exist?
I'd like to create a Collection using those parameters, to help keep track of what I'd like to read and what I have read already, but I don't know the syntax of the search to move forward with this idea. Can anyone help me?