Custom IF commands?

[Dorign]

I'd like to know if there are custom IF commands already installed on the vanilla forums?

For example, I'd like to put a line break in before a Yahoo! IM icon shows up, but if a user doesn't have a yahoo! account/IM, it will still display the BR.

Thanks in advance!

[Kirk Y]

<if condition="$post[yahooicon]">You have Yahoo!</if>