3
Yes, I've noticed that.
There is one way to make sub-topics more integrated with the topics.
You put the same image on both of them, so they apear alike but with diferent names:
example:
Topic: XOOPS Modules, image xoopsmodules.gif
sub-topic: Beta modules, image xoopsmodules.gif
But if we could list all of them under XOOPS modules Topics, would be much better