Finding out if a forum is just a category

[ShannonA]

Is there some variable that I can access in global_start that will tell me if a forum is acting as a forum or just a category?

I have something that I want to set up for the forumdisplay page, but only when it's listing threads ...

[webmazter]

You will need to access the forum bitfield for forum/category option.

[ShannonA]

You will need to access the forum bitfield for forum/category option.

Great. And how would one do that from global_start?