First of all, thank you for this great software. I've been using Comix for some time now, and I love it.
It's just that today I noticed that one of your screenshots shows subcollections (http://comix.sourceforge.net/screenshot-3.png), and I have no idea how to add them. I've been hoping for this feature for some time now, and I never thought it already existed. :)
If you click on add collection. And then give it a name, it should appear under all books. Then you can click and drag other books into that collection. i.e. create a collection called sandman, and drag all your sandman books into it. I hope this helps. If not let me know and I'll take some print screens of what I'm doing.
Thanks, it works.
Although I could have sworn it didn't work at the time of my post. Maybe my distro was a bit slow with an update or something…