yes exactly, I mean the categories that one uses to hierarchically tag the papers. In other words, the "drawers" (in a physical sense) that one organizes one's documents (papers or photos) into.
One awesome thing I noticed with XnView is that it allows efficient organizing in such ...
thanks for various recent improvements to this great program! I see version 1.01 is out, but this suggestion was not added to the new version: categories work in some thumbnail view, but not the detailed view.
Here is the suggestion posted under suggestion: https://newsgroup ...
If you find such a software, please please let me know.
For me, iView Media Pro had done all what I wanted for many years: which is managing scientific papers as PDF. I looked around quite a bit, all the commercial and free bibliography and paper management systems (like Mendeley ...