Here's another captain-dummy set of questions.
Let's say I want to have a Primary tag named Culture and within them second-level Primary tags Books, Movies, and TV. But I also know that the folks on my forum are going to want to discuss particular TV shows, like, say, Terriers, or Firefly.
As I understand it, and this is where I'd like to be corrected if I'm wrong, I could either just let someone start a freeform Terriers thread tagged with TV, or I could add a Secondary tag of Terriers with which they could tag any posts about that show — but here's where I'm a bit confused: that Secondary tag is going to appear in the navigation menu of tags, correct? Below, I guess, all the Primary tags.
Is there a way either to hide Secondary tags from that menu (if you'd even want to do that; I am not certain I would but I'd like to know)?
Barring that, can someone explain to me how the Secondary tags are sorted in that menu? Is it random, alphabetical, by usage? Is there some way at least to visually differentiate in that nav menu that the Primary list has ended and now it's showing Secondary tags?