Nothing special really, just something you can play with even more.
I have created two new vB codes - [hr] and [high]!
The first is obvious, you use it to make <hr>'s. Two versions of it, first is like this:
[hr][/hr] becomes:
[hr][/hr]
and second is:
[hr=red][/hr] becomes:
[hr=red][/hr]
The second one is a bit more special. We usually use the [color=red] code to denote important things in our posts. Problem is, the color red is poorly viewed for members using the vBulletin.org style.
So, now you can use this special code!
[high]What's up?[/high] becomes:
[high]What's up?[/high]
For vBulletin.org style users, it will be yellow, and for vBulletin.com style users it will be red.