[Karri]

I was able to get the hr in there but I had to define a custom bb code for it first. The only bb code for hr that I was able to make work was

PHP Code:

Title: Horizontal Line
Tag: hr
Replacement: <hr width="{param}">
Example: [hr]100%[/hr]
Description: This BB Code allows you to add horizontal lines.
Use {option}: No 


then in the Doublepost Preventing options I have

PHP Code:

[hr]100%[/hr] 


for the post separator.