A few versions back, I found a way to make the quantity in stock easily editable in the Categories/Products page (categories.php). It was handy for my client to glance through the list and see a stock item getting low and change it and save that change without needing to open the product edit page and find it and edit it there. I've been through all my notes, my old modules, the ZC plugins, but I can't find it or what it was called. My searches have been so broad as to be futile. Anyone familiar with that feature and know if there is a plugin for it or how to edit the categories.php file to bring that back?

Thanks for any light that can be shed on this mystery.

Jim