From CoCWiki

Documentation

This is to provide a link to the forums that will always work, even when they change their address.

Parameters

• post - The number of the post you're linking to. If the url is http://callofcombat.com/phpBB3/viewtopic.php?t=12528, then the topic number is 12528.
• text - Optional. The text you want to be linked.

How to use it

{{Forum|post=12528|text=Tman's post}}

Looks like: Tman's post