UBB.threads PHP Forum Software Community Forums Resources and Customizing How Do I? How Do I Add Something New To The Menu Bar?

How do I add something new to the Menu Bar, or whatever it is called?

By Menu Bar, I mean that which contains Portal Page, Forum List, My Stuff, etc.

What php file is it, and where is it located?

I had it figured out in 6.5.5

I haven't yet figured it out for version 7.